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Article

Modelling a Compensation Standard for a Regional Forest Ecosystem: A Case Study in Yanqing District, Beijing, China

1
Department of Statistics, School of Science, Anhui Agricultural University, Hefei 230036, China
2
School of Economics and Management, Beijing Forestry University, Beijing 100083, China
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2018, 15(4), 565; https://doi.org/10.3390/ijerph15040565
Submission received: 22 January 2018 / Revised: 16 March 2018 / Accepted: 19 March 2018 / Published: 21 March 2018
(This article belongs to the Special Issue Decision Models in Green Growth and Sustainable Development)

Abstract

:
The assessment of forest ecosystem services can quantify the impact of these services on human life and is the main basis for formulating a standard of compensation for these services. Moreover, the calculation of the indirect value of forest ecosystem services should not be ignored, as has been the case in some previous publications. A low compensation standard and the lack of a dynamic coordination mechanism are the main problems existing in compensation implementation. Using comparison and analysis, this paper employed accounting for both the costs and benefits of various alternatives. The analytic hierarchy process (AHP) method and the Pearl growth-curve method were used to adjust the results. This research analyzed the contribution of each service value from the aspects of forest produce services, ecology services, and society services. We also conducted separate accounting for cost and benefit, made a comparison of accounting and evaluation methods, and estimated the implementation period of the compensation standard. The main conclusions of this research include the fact that any compensation standard should be determined from the points of view of both benefit and cost in a region. The results presented here allow the range between the benefit and cost compensation to be laid out more reasonably. The practical implications of this research include the proposal that regional decision-makers should consider a dynamic compensation method to meet with the local economic level by using diversified ways to raise the compensation standard, and that compensation channels should offer a mixed mode involving both the market and government.

1. Introduction

The indirect value of forest ecosystem services is an important consideration for appropriate compensation standards, which has become the consensus of different countries around the world. In America and many European countries, long-term research has been carried out concerning the issue of the evaluation of forest ecosystem services and their compensation. Governments and scholars in this research area have focused mainly on the strategy of payment for ecosystem services (PES) and have studied the relationship between forest ecosystem services and compensation standards. PES was first used to connect the ecosystem with beneficial social activities and to determine the estimated cost to replace lost ecosystem services [1,2]. In the first comprehensive multi-scale evaluation of the global ecosystem [3], ecosystem services were classified into four types: production services, regulation services, cultural services, and support services. With each term defined from the perspective of supply or demand, market and non-market values are recognized in both spatial and temporal dimensions. It is optimal to decide compensation by considering market value because doing so clarifies the calculation method, the evaluation result, the application to general issues, and whether or not the market would support the ecosystem service [4]. Forest ecosystem services undergo temporal and spatial changes, which require in-depth research on the multiple service features [5,6]. Research in this area has focused on three aspects: (1) the correct assessment of ecosystem services; (2) the analysis of the relationships among all services; and (3) the study of the issues using proper spatial and temporal scales. To sum up, the published research has generally centered on the theory and evaluation method of forest ecosystem services, the market value of services, and the contributing factors, with growing interest in the study of the relationship between forest ecosystem services and the compensation standard. What has been less studied in the area of forest ecosystem services are the conflicting evaluation methods, inconsistent evaluation criteria, and the absence of an explicit theoretical basis.
In China, the evaluation of forest ecosystem services started in the 1980s, with substantial work undertaken on the standardization and quantification of the evaluation theory. A comprehensive evaluation of China’s forest resources was done by focusing on the ecological significance of water conservation, biodiversity conservation, and air purification [7]. China has implemented national policies on payments for ecosystem services. A preliminary evaluation of China’s programs from the perspective of ecosystem services has been conducted [8], followed by a comprehensive review of ecosystem services and their economic valuation in China [9]. The evaluation of China’s forest ecosystem services proved that their value was well above the value of the corresponding forest and wood products [10,11]. Systematic research was conducted on the relationship between forest ecosystem services and forest eco-compensation that argued that eco-compensation was an effective transfer mechanism to internalize the externalities of forest ecosystem services and was an important component of China’s forestry development [12]. With economic approaches such as the replacement-cost method, opportunity-cost method, and shadow-engineering method, the indirect use value of the ecosystem of Beijing has been evaluated [13]. In recent years, there has been a growing interest in China’s academic circles in the relationship between these services and the compensation standard. In China, researchers have a universal viewpoint that the existing compensation standard is too low to remedy the forest farmers’ losses. Therefore, evaluation methods have been compared; the spatial transfer on ecological compensation has also been studied; and some studies have considered that the compensation standard should be based on the cost while others on the benefit [14].
In terms of research scale, the evaluation of forest ecosystem services has covered most of China’s provinces and their governing counties and cities, but the different evaluation methods that have been adopted make it difficult to compare the results in different regions. For previous literature, upon analyzing the characteristics of the overall forest ecosystem services and compensation standard, it was found that these studies evaluated the forest ecosystem services without benefit or cost, respectively. To address this problem, the State Forestry Bureau formulated the Forest Standard of the People’s Republic of China—Evaluation Standard on the Function of Forest Ecosystem Services (LY/T 1721-2008) in May 2008 to standardize the data source, indicator system, and evaluation formula for forest ecosystem services. Despite this effort, research on the relationship between the forest ecosystem services and the compensation standard remains insufficient. In terms of research method, research analysis from mathematical and statistical perspectives is not common.
This paper aimed to assess the development results of forests in Yanqing District, Beijing, in order to monitor the changes in forest stock and to gain a correct understanding of the forest produce services, ecology services, and society services of the forests in this area. In this research, we used both cost theory and benefit theory to evaluate the forest ecosystem services in Yanqing District based on local forest data. The evaluation results, taking into account economic and social development as well as the existing compensation standard, helped to reveal the true importance of Yanqing’s forest ecosystem services to local economic and social development. The appropriate evaluation of these services is of great significance in implementing ecological compensation policy for forests and in fostering the correct awareness of eco-civilization among the public. What is the best way to establish a compensation mechanism in China? One way is to use a market mechanism based on the Coase theorem. Another way is for the government, as the leader, to determine the compensation. Based on this, this study investigated the coupling relationship between the economic value of forest ecosystem services and the current eco-compensation standard.
The main content of our study is as follows. In Section 3, we assign appropriate methods for forest ecosystem services in Yanqing District and determine specific coefficients to evaluate changes in ecosystem services in the study area; in Section 4 and Section 5 we adjust the results of benefit and cost, calculate the compensation standard according to the study region economic situation, and predict the implementation time. Finally, in Section 6 we provide advice to support regional sustainable development policies.

2. Study Area and Data Sources

This study focused on the Yanqing District of Beijing, an extensive, unique, geological area on the north-west fringe of Beijing. Yanqing District has been recognized as a “National Green County” and “National Garden County”. It is known as an ecological civilization pioneer in China. In 2013, this area was included in the United Nations Educational, Scientific and Cultural Organization (UNESCO) world geological park directory.

2.1. Natural Conditions

The Yanqing District of Beijing (40°16′–40°47′ N, 115°44′–116°34′ E) is situated at the intersection of the Inner Mongolian Plateau and the North China Plain, 80 km from the north-west suburb of Beijing (Figure 1). It is a typical basin surrounded by mountains on three sides and by the water of the Guanting Reservoir on its south-west side.
With an average elevation of over 500 m, Yanqing covers a total area of 1993.75 km2, with a mountainous area accounting for 72.8%, plain area of 26.2%, and water area of 1% [15]. Located in the transitional zone between the warm temperate zone and mid-temperate zone, and between the semi-arid zone and semi-humid zone, Yanqing enjoys a continental monsoon climate. The average annual precipitation of the district reaches 467 mm. Due to the airflow from Bashang, Hebei, and the Inner Mongolian Plateau, the wind power of Yanqing is quite strong, with an annual average wind speed of 5.1 m/s. A part of the Haihe Basin, Yanqing boasts 18 rivers above Grade Four including river systems such as the Yongding River, the Chaobai River, and the North Canal.
In terms of tree composition, the district forest consists of 10 major varieties of trees (Table 1). In terms of tree structure, the district forest is classified into pure forest and mixed forest. Among the forestland area, the forest covers an area of 112,170.3 ha, 74.2% of the forestland area, while the shrubland area totals 20,720.7 ha, 13.7% of the forestland area. The maximum forest areas are: (1) protection forests (61.7%); (2) afforestation forests (shrub) (11.0%); (3) economic forests (7.0%); and (4) young forests (6.4%), totally accounting for 86.1% of the district’s forestland. The district enjoys forest coverage of 54.91% and boasts seven parks above the district level. A total of 87.5% of the forest area in the district, or 135,000 ha, are for public benefit while 10,000 ha are for commercial use.

2.2. Social and Economic Situation

2.2.1. Economic Situation

In 2014, Yanqing District achieved a gross regional production of 9.98 billion Yuan (1 USD ~ 6.9 Yuan) including 968 million Yuan in the primary industry (9.7% of the total output value), 2.76 billion Yuan in the secondary industry (27.7% of the total output value), and 6.25 billion Yuan in the tertiary industry (62.6% of the total output value). In 2014, the annual fiscal revenue was 1.139 billion Yuan and the fiscal expenditure was 6.02 billion Yuan. The per capita disposable income of urban residents was 33,778 Yuan, up 8.5% from the previous year, whereas the per capita consumption expenditure totaled 19,808 Yuan, 9.1% higher than the year before [15].
In 2014, the rural economic income totaled 13.06 billion Yuan, showing an annual growth of 10.7%. The agricultural production value stood at 2.41 billion Yuan, down 7.6% on a yearly basis. The per capita net income for rural residents was 17,017 Yuan, up 9.8% from the previous year. The per capita annual living expenditure was 11,190 Yuan, recording an increase rate of 10.9%.

2.2.2. Social Situation

Statistical data from local websites [15] says the population of the district totaled 316,000 at the end of 2014 including 163,000 agricultural workers (51.4%) and 153,000 non-agricultural workers (48.6%). Thanks to the wide participation of local people and vigorous support from the district government and people from all walks of life, the district’s cultural facilities have witnessed great improvement with rich cultural activities as well as enhanced protection and utilization of local cultural heritage. According to the latest statistical data, there are 430,000 books in the Yanqing district library and 133 key cultural relic sites under protection above the district level.

2.3. Implementation of Ecological Compensation

Starting in December 2004, an ecological compensation mechanism was implemented in Yanqing in a comprehensive way pursuant to the general plan of Beijing. At present, the ecological forests of the district under eco-compensation cover an area of 128,700 ha, involving an annual compensation fund of 44.88 million Yuan for 15 towns and 360 administrative villages. There are 8949 permanent ecological forest rangers across the district, and the highest annual salary among forest rangers reaches 7500 Yuan [15].
In terms of input of compensation funds, over 1 million Yuan in 11 towns including Zhangshanying, Jiuxian, Xiangying and Qianjiadian has been invested since 2005. Twenty-three ecological forest-management stations have been set up, having a total floor area of 790 square meters. Since the implementation of the ecological forest compensation mechanism in mountainous areas, over 20,000 farmers have been employed due to the ecological forest management and protection initiative, and the per capita monthly income of the local agricultural population has increased by over 200 Yuan.

2.4. Data Sources

Data for this research came from the Statistical Yearbook of Yanqing District [15], a farm-household questionnaire designed for this research, a questionnaire launched by the Forestry Administrative Department, a questionnaire for tourists, and a questionnaire for experts who study forest ecosystem services. Due to the renewal period of statistics, the data base year of 2014 was adopted for this research. Several parameters in the model are shown in Table A1 in Appendix A.

3. Research Methodology

This research calculated the ecosystem services value of forests in Yanqing District, considering the two aspects of benefit and cost. The ecological value Equations (1)–(8) came mostly from the People’s Republic of China Forestry Standard—Regulation for Evaluation of Ecosystem Service and Function of Forest (LY/T 1721—2008) [16,17], which was enacted by the State Forestry Administration in May 2008, although some adjustments have been made to the methods of evaluation.
In Section 3.1, we discuss the total value of forest ecosystem services including the economic benefit of forest production, ecological benefit of forest ecosystem services, and social benefit provided by this use of the forest ecosystem.
In Section 3.2, we discuss the total costs of forest ecosystem services involving direct costs, indirect costs, and opportunity costs.

3.1. Benefit

Benefits mainly come from economic usage which can be obtained from the statistics. Some benefits of the forestland come from ecological value (Section 3.1.1) which includes water conservation (Equation (1)), water purification (Equation (2)), soil reinforcement (Equation (3)), carbon fixation (Equation (4)), oxygen release (Equation (5)), atmosphere purification (Equation (6)), crop/pasture increases due to forest protection (Equation (7)), protecting biodiversity (Equation (8)), and forest recreation income from visitors (Equation (9)). Benefits also come through social value (Section 3.1.2), which includes income/value brought by forestland through scientific research (Equation (9)), employment (Equation (10)), health value (Equation (11)), and social development (Equation (12)).

3.1.1. Determining Ecological Benefit

(1) Water Conservation
The calculation reflects the relationship between water resource consumption and economic/social development due to systematic interactions between anthropogenic production, consumption activity, and water resources. The market value method is used in the study to evaluate the value of forest material production services. The market value method measures the economic benefits or losses of changes in environmental quality by using changes in regional output or profits caused by environmental quality changes [18].
The value of the annual water content regulation of a forest stand (Yuan/yr) is:
U t = 10 C k × A ( P E C )
where Ck is unit volume income of the reservoir operation (Yuan·m−3); A is the area of the forest stand (ha); P is precipitation (mm/yr); E is evaporation of the forest stand (mm/yr); and C is surface runoff (mm/yr).
For the water purification value, we used the method of price substitution of tap water, which means the value is calculated using the tap water price [17]. The formula is:
U s = 10 K × A ( P E C )
where K is the price of tap water (Yuan/t); and the other indicators are as above.
(2) Soil Reinforcement
Soil reinforcement and fertility maintenance are normally considered together [19]. Soil reinforcement means reducing soil erosion. So we compare the non-forestland and forestland to calculate the net productivity of the forest soil in the research area. However, the income of fertility maintenance is always small, so we omitted fertility maintenance.
The value of soil reinforcement (Yuan/yr) is:
U g = A ( C n + C t ) ( X 2 X 1 ρ )
where Cn is the output value of farmland (Yuan·m−3); Ct is the annual income after land development (Yuan·m−3); X2 is the soil erosion modulus of non-forest land (t·ha−1·yr−1); X1 is the soil erosion modulus of forest land (t·ha−1·yr−1); and ρ is the volume weight of soil (g·m−3).
(3) Carbon Fixation and Oxygen Release
We calculated this measure by summing the incomes of carbon fixation and oxygen release [20], then calculated the income of carbon fixation (Yuan/yr) as:
U c = AC c ( 1.63 R t B n + F t )
where Cc is the market price of carbon dioxide (Yuan·yr−1); Rt is the carbon content of carbon dioxide with the percentage of 27.27%; Bn is the net productivity of forest stand (t·ha−1·yr−1); and Ft is the annual carbon fixation content of the soil of the forest stand (t·ha−1·yr−1).
The volume of oxygen release can be calculated by the carbon dioxide fixed by the forest. We choose a method called the shadow price method (SPM) to evaluate the oxygen’s market value. The oxygen price was taken to be the market price of oxygen for medical use [21]. The equation for the value of oxygen release (Yuan/yr) is:
U o = 1.19 C o A B n
In this formula, Uo represents the annual oxygen release value of forest (Yuan·yr−1); Co is the market price of oxygen in 2011 (which was 1200 Yuan·t−1), and the other indicators are as above.
(4) Atmosphere Purification
This measure is based on the per unit area volume of pollutants and dust that are absorbed by forests and calculates the total pollutants and detained dusts assimilated by forests [17]. The value is calculated by the method of market value. The annual air purification value of the forest (Yuan/yr) formula is:
U j = i = 1 n K i × Q i × A
where for each type i of pollutant (SO2, HF, NOx) and detained dusts, Ki represents the cost of air purification (Yuan·kg−1); and Qi is the volume of annual absorption (kg·ha−1·yr−1).
(5) Forest Protection
It is of interest to know how forest protection is related to issues of social and ecological justice, exploring whether forest exploitation based on the top-down managerial model fosters an inequitable distribution of resources [22]. The value substitution method of disaster mitigation and yield increase is used to check the forest’s value in alleviating disaster and increasing production. The formula for the value of forest protection (Yuan/yr) is:
U f = i = 1 n C i × Q i × A
where n represents the number of types of crop and pasture, and for each type, respectively, Qi is the increased production of that type of crop/pasture due to protection by the forest (including coastal protection forest) (kg·ha−1·yr−1); and Ci is the income from the type (Yuan·kg−1).
(6) Biodiversity
The contingent value method (CVM) is usually used to evaluate the value of environments that have intangible benefits, and mainly uses a questionnaire survey to directly examine the economic behavior of respondents in a hypothetical market in order to obtain consumer willingness to pay for goods or services [20]. In this study, the benefits of biodiversity can also be evaluated in this way, that is, by asking similar questions such as “How much are you willing to pay each year to preserve the living wildlife in per unit area?” The average of the answers is used to be an annual income opportunity. It is satisfactory as the price range to calculate the corresponding income per unit area. The income value (Yuan/yr) of protecting biodiversity is:
U b = i = 1 n S i × A
where n is the number of species and for each species i; and Si is the annual income opportunity per unit area (Yuan·ha−1·yr−1). As before, A is the area of forest stand.
(7) Forest Recreation
The research built a hypothetical market and obtained the WTP (willingness to pay) of the respondents [21]. The annual value of forest recreation was evaluated by the question in the designed questionnaire: “In order to enjoy the natural scenery, how much are you willing to pay for this tour?” If the respondents gave a positive answer, the questionnaire will further inquire the maximum amount to be paid, reasons for payment, and ways of payment. In this study, the data sources of forest recreation services valuation were based on the random sampling principle. Questionnaires were used in the field survey. A total of 300 questionnaires were handed out and 287 questionnaires (95.67%) were actually recovered. Among them, 277 questionnaires were valid, giving a 96.51% effective recovery rate of questionnaires.
This paper follows the above opinions and adopted WTP as the CVM (contingent value method) research and evaluation indicators.
T N U V = E ( W T P ) × N
where N represents the number of yearly tourists; E(WTP) represents per capita WTP; and TNUV represents non-use value.
E(WTP) can be expressed using the following model [23,24]:
E ( W T P ) = p i B i
where pi is the probability that the visitor will be willing to pay for Yanqing District and Bi is the bid amount. The correlation between the WTP obtained in the questionnaire and individual social characteristic variables meeting the principles of economics is one of the methods for determining the validity of CVM [25].

3.1.2. Social Benefit

According to the structure of the research, the social income was divided into the income of scientific research, employment, health, and social development. The income earned from these services was considered to be only the economic benefits; we did not consider the economic value of the services when they entered the local or national market, so we used the benefit transfer method [26].
The indicator is calculated by the total amount of scientific research funding as well as the transformation and income rate of such income. The formula is:
U k = N × m × n
Here, Uk represents the annual income of forestry scientific research (Yuan·yr−1); N is the total amount of scientific research funds for forestry (Yuan·yr−1); m is the transformation rate of scientific research fruits of forestry (%); and n represents the social income rate of fruit transformation (%).
The specific calculation method of employment is to count the newly increased amount of employment in combination with the average wage. The formula is:
U e = Δ N × w
where Ug represents the annual income of forestry employment (Yuan·yr−1); ΔN is the newly increased employment population of forestry workers that year (people·yr−1); and w is the annual average wage (Yuan·yr−1).
The main calculation method for health income is:
U h = N × Δ Y × G
Here, Uh represents the annual income of human health (Yuan·yr−1); N is the number of local residents (people·yr−1); ΔY is the extended age limit of human life span (a); and G is the limit of willingness to pay (Yuan·yr−1).
The formula for social development income is:
U d = Δ G × I
where Ud is the annual income of social development (Yuan·yr−1); ΔG is the annual average increase of GDP (Yuan·yr−1); and I is the influence coefficient of the existence of forest on GDP.

3.2. Cost

We considered the cost of producing and maintaining forestland as well as the cost of replacing forest services with other alternatives. Some of these costs were classified as direct costs (Section 3.2.1): the construction cost of forest (Equation (15)), forest production salary cost (Equation (16)), and operational/managerial costs (Equation (17)). Other costs were classified as risk costs (Section 3.2.2). The remaining costs evaluated in this section were classified as opportunity costs (Section 3.2.3).

3.2.1. Direct Cost

The direct cost was dominated by the construction cost of forest, forestry production cost, and operational cost of the forestry department [27]. The specific calculation of the three parts is as follows.
(1) The Construction Cost of Forest
The construction cost of forest refers to the cost of afforestation including the input of soil preparation, nursery stock, fertilizing, laboring, and tending inputs for three years after afforestation. Data sources were the local forestry statistical yearbook. The formula for the construction cost of forest (Yuan·yr−1) is:
C 1 = i 5 T i
where T1T5 refer to the input of soil preparation, nursery stock, fertilizing, laboring, and tending after afforestation (Yuan·yr−1), respectively.
(2) The Forestry Production Salary Cost
The forestry production cost includes the input cost of forest products (forest, logs, firewood, bamboo, and rattan) and non-forest products (animals and plants), and the input cost for herding in forests. This research adopted the method of production cost to unify the accounting of the two input costs. The equation for the total input cost of forestry production (Yuan·yr−1) is:
C 2 = i 3 W i × N i
where W1W3 refer to the average salaries of workers of forest products, non-forest products, and herding in forests (Yuan·yr−1), respectively; and N1N3 are the number of workers dealing with forest products, non-forest products, and herding in forests, respectively.
(3) The Non-Salary Operational Cost of the Forestry Department
The operational cost of the forestry department includes two types of expense: one is the administrative cost, referring to the newly increased funds at the district, township, and village levels which are used for reinforcing the management of public welfare forest; the other is the cost of forest protection, which refers to the salaries of forest rangers and the funds for management and protection. The accounting information of China’s national economy was the main data source and included the expenditure of the operational and managerial activities of various forest resources. The equation for the total operational cost of the forestry department (Yuan·yr−1) is:
C 3 = M + G
where M is the administrative cost of the forestry department (Yuan·yr−1); and G refers to the input of the forest protection cost (Yuan·yr−1).
Apart from the three specifically mentioned expenditures, there were actually some other inputs such as office expenses of the forestry managerial department and so on, but these accounted for only a small proportion and so were omitted in this calculation.

3.2.2. Risk Cost

Risk costs mean the costs of the potential ecological and social economic security risks [27]. Based on this, this study mainly calculated the risk costs of accidents. In this case, risk costs mainly referred to natural hazards including plant diseases and forest fire disasters. This measure mainly referred to the treatment expenses of forest plant diseases as well as the management expenditure of insect pests. In addition, costs were added such as forest fire insurance and the wages of the rangers. Hence, the risk costs (Yuan·yr−1) can be formulated as:
C q = C z + C a
where Cq refers to the risk cost; Cz is the forest management and protection expense of plant diseases and insect pests (Yuan·yr−1); and Ca is the cost of forest fire insurance and wages of the rangers (Yuan·yr−1).

3.2.3. Opportunity Cost

The opportunity cost of the forest is calculated by multiplying the total area of forest by the economic output of various products per unit land area, which is just the opportunity cost of forest eco-compensation. Therefore, the measurement of opportunity cost is calculated using the economic benefits generated directly by forest products, non-forest products, and herding and hunting, which can be calculated using the cost-accounting theory system [28]. The products considered were forest products such as lumber and firewood; non-forest products including animals like bees and plants such as fungus and medical materials; and herding and hunting products. The formula for the opportunity cost (Yuan·yr−1) is:
C m = i = 1 n P i Y i
Here, for each product i, Pi is the price (Yuan·kg−1); and Yi is the annual average amount (kg·yr−1).

4. Results

4.1. Benefit Results

4.1.1. Economic Benefit

The forestry output value of Yanqing District in 2014 was 0.22 billion Yuan. The forestry output value for non-commercial forest can be calculated based on this value and the proportion of the non-commercial forest in Yanqing, that is, 22,202.8 × 87.5% = 0.19 billion Yuan, where the unit value is 1409.07 Yuan·yr−1.
The output value of non-wood products mainly depends on the local forests’ economic development. Yanqing’s forest area for economic development amounts to 230 ha including forest flowers of 50 ha, forest medicinal plants of 90 ha, forest mulberry of 100,000 ha, forest fungus of 70 ha, and forest birds of 20 ha [15]. In the process of compensation, the actual computation should depend on the specific circumstances due to the complicated forest economy, and it is unnecessary to account for all conditions. Using this calculation method, the total output value of the non-wood forest products throughout 2014 was 45.5 million Yuan (unit value: 19.78 Yuan·ha−1) (see Table 2). An additional 1600 farmers became employed. There was an average increase in forestland revenue of 500 Yuan for each hectare. At the same time, the forest economic industry has spawned the development of related industries. According to the statistical yearbook, the local income from grazing and hunting in 2014 was negligible and thus can be omitted. For this research, this fractional income was not incorporated into the total value, which is clearly sensible because the result of the calculation is relatively large.

4.1.2. Ecological Benefit

(1) Water Conservation
Benefit from water flow regulation: the annual precipitation in Yanqing District averages 467 mm as measured, with an aggregate of approx. 230 mm in evaporation and ground runoff. Therefore, the intake of the reservoirs is roughly 2.3 Yuan·m−3, with the benefit of regulating water flow of approx. 745 million Yuan·yr−1.
Water purification: the prevailing price of running water in Beijing is 4 Yuan·m−3. Hence, the benefit from water purification amounts to 1.28 billion Yuan·yr−1.
(2) Soil and Fertility Conservation
Benefit from soil conservation: according to the Beijing Statistical Yearbook and the relevant water conservation authority, the average bulk density of soil is 1.25 per unit. The average difference in soil erosion modulus between non-forestland and forestland reaches approx. 70. The output value of farmland is approx. 50 Yuan·ha−1, and 10.68 Yuan·ha−1 after land development. With these data, the benefit from soil conservation was concluded to be 459 million Yuan.
Benefit from fertility conservation: the organic matter in the surface soil in the local woodland averages 3%, the content of total nitrogen averages 0.19%, total phosphorus 0.02%, and total potassium 0.08%. Assuming that C1, C2, and C3, the prices for diammonium phosphate, potassium chloride, and organic matter are 2400 Yuan·t−1, 2200 Yuan·t−1, and 320 Yuan·t−1, respectively. Assuming that R1, R2, and R3, the nitrogen content of diammonium phosphate, the phosphorus content of diammonium phosphate, and the potassium content of potassium chloride are 14%, 15.01%, and 50%, respectively. Based on these data, we can infer the benefit from fertility conservation was approx. 462 million Yuan.
(3) Carbon Sequestration and Oxygen Release
Benefit from carbon sequestration: With a carbon price of 1200 Yuan·t−1, the average value for By of 8.977 t·ha−1·yr−1, and Fs carbon being 0.4 t·ha−1·yr−1, we calculated that the annual profit of carbon sequestration was 711 million Yuan.
Benefit from oxygen release: the amount of released oxygen was inferred from the carbon dioxide sequestration in forests and the oxygen price for medical use was adopted. Co, the market price of oxygen in 2011, was 1200 Yuan·t−1. Based on these data, the benefit from oxygen release was concluded to be approx. 1.731 billion Yuan.
(4) Air Purification
According to related statistical yearbooks, it can be inferred that the benefit from air purification by non-commercial forests in Yanqing District amounts to approx. 15 million Yuan (Table 3).
(5) Forest Protection
According to related statistical yearbooks, it can be concluded that the annual benefit from forest protection amounts to approx. 675 million Yuan.
(6) Biodiversity
Based on the operational income from biodiversity protection and relevant biodiversity indexes, we obtained the annual income of approx. 1.35 billion Yuan from biodiversity protection.
(7) Forest Recreation
According to relevant surveys on local tourist attractions and ticket proceeds, the annual income from recreation in the non-commercial forests amounts to approx. 135 million Yuan.

4.1.3. Social Benefit

The benefit from scientific research, represented by the effective benefit from scientific achievements, can be calculated from the total scientific research funds allocated for the forestland of Yanqing, the conversion rate of research achievements, and the yield rate. According to the Statistical Yearbook of Beijing and local statistical data, relevant data on Yanqing’s total scientific research funds in the forestry and conversion rate were obtained. Based on these data, we calculated Yanqing’s benefit from scientific achievements in 2014, which amounted to approx. 550,000 Yuan, a unit area benefit of 4.07 Yuan·ha−1.
In terms of employment benefit, Yanqing’s forestry industry employed 20,000 in 2014 according to the Yanqing Statistical Yearbook, an increase of 420 from the previous year, with an average annual salary of 4800 Yuan per person. Therefore, Yanqing’s employment benefit in 2014 was approx. 2 million Yuan, a unit area benefit of 14.8 Yuan·ha−1.
In terms of health benefit, based on the local population, the average growth of life span, and the maximum payment from the local residents, we obtained the health benefit in 2014, which amounted to 7.925 million Yuan, a unit area annual benefit of 58.7 Yuan·ha−1.
In terms of social development benefit, based on the average growth of GDP (12.1%) in 2014 and the coefficient of forest’s contribution to GDP, the social development benefit was approx. 121,000 Yuan, a unit area annual benefit of 0.9 Yuan·ha−1.
Using the above calculation, we obtained the total social benefit in Yanqing District in 2014 (Table 4). It can be seen from this table that the health benefit topped the benefit list, followed by the employment benefit, then scientific research benefit, and social development benefit.

4.2. Cost Results

4.2.1. Direct Cost

Direct cost accounting includes the forest’s construction cost, production cost, and the operation cost. In this part, these three costs will be studied.
(1) Construction Cost of Forest
According to Yanqing’s Statistical Yearbook (2014) [15] and the field research data, Yanqing’s forest construction cost in 2014 totaled approx. 201 million Yuan, a unit area construction cost of 1492.54 Yuan·ha−1 (Table 5).
(2) Accounting Method for Forestry Production Cost
The forestry production cost covers the cost of forest products (timber, logs, fuel wood, and bamboo rattans), non-wood forest products (animals and plants), and grazing in the forest. According to field research data and the data provided by Yanqing’s government, the production cost of Yanqing’s forestry in 2014 was 1.01 billion Yuan, a unit area production cost of 7462.69 Yuan·ha−1 (Table 5).
(3) Accounting Method for the Operation Cost of Forestry
According to the field research data, Yanqing’s input in this aspect in 2014 could be roughly estimated as 0.6 billion Yuan, a unit area operation cost of 4477.61 Yuan·ha−1 (Table 5).
In addition to the above three specific costs, there were some other costs to be included in the direct cost, such as the office expenses of the forestry administrative departments. However, owing to their small weights when compared to the total cost, they were omitted from consideration.

4.2.2. Risk Cost

This part includes the treatment expenses of forest plant diseases as well as the management expenditure of insect pests and costs on forest fire insurance. In 2014, to sum up, the risk costs for forests primarily included two parts, as shown in Table 6.

4.2.3. Opportunity Cost

In 2014, the output value of Yanqing’s forestry stood at 222 million Yuan. In light of the diverse functions of the forest ecosystem, we calculated the average loss and obtained the opportunity cost of 2.4 billion Yuan in 2014 (Table 7), a unit area opportunity cost of 1423.85 Yuan·ha−1.

5. Compensation Standard Estimation and Discussion

5.1. Benefit Adjustment

According to the above calculations, the produce, ecology, and society services from the ecosystem of local forests are enormous, a unit area benefit of approx. 57,402.32 Yuan·ha−1, far more than the current standard compensation price (2248.88 Yuan·ha−1). To minimize the errors in calculations, an analytic hierarchy process (AHP) can be applied to calculate the weights of economic, social, and ecological benefits, and then these weights can be used to adjust the proportion of these benefits [29].
First, we used the expert assessment assignment method to analyze the weights of the three services which are the produce service, the ecology service and the society service. In the process of evaluation, we assumed the evaluation of Yanqing’s non-commercial forest benefit as objective level A. Then, we assumed the three benefits as B1, B2, and B3 under index level B. The economic benefit in level B was subdivided into benefit from wood products, non-wood products, and grazing and hunting. The ecological benefit was subdivided into water conservation, soil and fertility conservation, carbon sequestration and oxygen release, air purification, forest protection, biodiversity protection, and forest recreation. The social benefit was subdivided into benefits from scientific research, employment benefit, health benefit, and benefit for social development. Therefore, we used a total of 14 detailed indexes from C1 to C14 under level C (Table 8). In this research step, we invited 15 experts from the local forestry department to grade each index according to its importance. The detailed processes and results are as follows:
First, construct the judgment matrix A–B, B1–C1, B2–C2, B3–C3.
Second, determine the latent root and the eigenvector; and do a consistency check for the CR (consistency ratio) coefficient. If the result is smaller than 0.1, the consistency check is deemed to have passed.
Third, carry out general level ranking (see Table 5 for details). It can be seen from the evaluation of Yanqing’s non-commercial forests that the weight of economic benefit accounts for 63.7%, the ecological benefit is 25.83%, and the social benefit 1 is 0.47%. Accordingly, the total unit area benefit of 57,402.32 Yuan·ha−1 as calculated should be adjusted to 14,473.83 Yuan·ha−1, which can be used as a reasonable upper limit for the ecological compensation standard for Yanqing’s non-commercial forests. This value can be used with the result obtained from the cost-based evaluation below to arrive at a reasonable compensation range.
Using the above strategies for evaluating forest ecosystem services, the benefits of non-commercial forests in Yanqing District in 2014 were calculated in a comprehensive and systematic way (Table 9). As of 2014, the gross benefit from the forest ecosystem was 78.01 billion Yuan, including 2.4 billion Yuan in forest products, 75.53 billion Yuan in services value, and 80 million Yuan in social development benefit.

5.2. Cost Adjustment

During cost calculation, mistaken calculation results may appear due to the long time span between data updates. For this reason, an adjustment should be made based on a sigmoid growth curve.
y = L 1 + a e b t
In the process of calculation, assuming L = a = b = 1, the simplified form for the Pearl growth curve is obtained [30], namely:
y = 1 1 + e t
Then, we replaced the time coordinate with the reciprocal of the local Engel coefficient of 2014 (En) and carried out the corresponding conversion to determine the relationship between En and y. Based on the statistical data of the local living expenditures and the local food expenditures as recorded in the Yanqing Statistical Yearbook (2014), the value of y was obtained, which was put into the formula to produce the adjusted value. Since the Pearl growth curve and the Engel coefficient were only relevant to the residents’ consumption regarding food expenditure, but not to other aspects such as healthcare, medical treatment, education, etc. provided by the ecosystem services, the calculation result by the Pearl growth curve was relatively large. In practice, therefore, we needed to pay attention to the expenditures incurred for health care, medical treatment, and education.
According to the Yanqing Statistical Yearbook (2014) and Beijing Regional Statistical Yearbook (2014), Yanqing’s per capita annual living expenditure in 2014 was 8135 Yuan, the per capita expenditure on food 2859 Yuan, and the per capita expenditure on health care, medical treatment and education approx. 800 Yuan. Based on these data, the revised Engel coefficient in Yanqing was calculated to be approx. 0.45, and the value of t (–0.78) was obtained. According to the growth curve function, the coefficient y during growth period was obtained, which was 0.31. Finally, we arrived at the gross value of per unit area cost of 4949.67 Yuan·ha−1 in Yanqing District for the year 2014.
Using the above strategies for evaluating forest ecosystem services, the cost of non-commercial forests in Yanqing District in 2014 was calculated in a comprehensive and systematic way (Table 10). As of 2014, the total cost was 2.06 billion Yuan including the direct cost of 18.12 billion Yuan, risk cost of 1.11 billion Yuan, and opportunity cost of 2.4 billion Yuan.

5.3. Compensation Standard Estimation

After adjusting the per unit area benefit and per unit area cost in evaluation practice, they became 27,753.52 Yuan·ha−1 and 6097 Yuan·ha−1, respectively, which were both well above the current compensation standards in Yanqing District. According to the local statistical yearbook in Yanqing District, the district achieved a regional GDP of 9.98 billion Yuan in 2014, with a total income of 7.80 billion Yuan from the forest ecosystem. That forest income was 78% of the GDP. Given the huge value of the forest ecosystem services, a proper evaluation of these services is called for to better accommodate the development of forestry. However, the current financial investment in Yanqing’s forestry is insufficient to meet the compensation standard, as shown by the results of this case study.
Accordingly, we assumed that a reasonable compensation standard could be set up between the cost and benefit as calculated. We extrapolated from 493 million Yuan in local financial investment in forestry for the year of 2014, 11.2% of annual average GDP growth rate in past five years, 6.5% growth rate in the forestry investment, and 1.35 billion ha of non-commercial forests.
Therefore, we established a hypothesis: the financial investment’s growth rate was assumed as 11.2%, Y(n) equals the assumed compensation standard (Table 11), n equals the year after 2014, n = 1 (2015), 2 (2016), etc. The compensation standard range was also assumed as a 6.5% growth rate, C(n) equals the adjusted cost value (Table 10); B(n) equals the adjusted benefit value (Table 9).
Y ( n ) = 2248.88   ×   111.2 % n
C ( n ) = 6097 × 106.5 % n
B ( n ) = 14473.83 × 106.5 % n
Having done this, and using the range of compensation standard as calculated below, it was concluded that it would take approx. 26 years (Table 11) before the government investment could exceed the cost as calculated in Table 11 to meet the compensation standard range as calculated above. Furthermore, we estimated that it would take 44 years to meet the benefit value. As the period was extended so long, we have not listed all of the tendencies for the benefit changes. These results showed that the compensation standard now is far from enough. Evaluating the long-term effects is currently not attainable; therefore, we chose this approach to simulate the tendency of forest eco-compensation. The results of such approaches will exaggerate the value of regional forest ecosystems as well as the economic significance of related measures to maintain and restore the forest ecosystem absolutely, and will cause the disruption of land-use planning, thus affecting the scientific and feasible planning of regional economic development. Compared with previous studies [21,31], the importance of forest ecosystem services in Yanqing to human welfare has been underestimated by the socio-economic system. Thus, policies on the eco-compensation of forest ecosystem services should be established to maintain the sustainable supply of the forest ecosystem services in Yanqing District, Beijing.

6. Conclusions

This work accounted and analyzed the benefit and the cost of forest ecosystems in order to meet compensation standards. The benefits of forest ecosystems include the economic benefit, the ecological benefit, and the social benefit, while the costs of forest ecosystems include the direct cost, risk cost, and opportunity cost. Next, the total of benefit and cost results were adjusted by AHP and the Pearl growth-curve method to obtain a closer to actual condition. With the GDP growth rate and the forestry investment growth rate, we respectively calculated that it would take 26 years for the current compensation standard to meet the adjusted cost result, and 44 years to meet the adjusted benefit result. It is of great importance to raise the compensation standard in the region and intensify forestry investment. Concrete ways to collect funds in the compensation of forest ecosystems are to receive funds from national finance, impose ecological safety insurance, etc.
It is worth noting that this Yanqing case was merely used to provide evidence for the research idea of this paper. In the actual work of scientific research, it is not necessary for all study fields to conform to every indicator used in this particular framework, calculating each one individually, because of the differences in the geographic, economic, and social conditions in other areas, and features of the woodland. Therefore, it is imperative to determine an appropriate screening of indicators in the calculation framework to take account of specific conditions in any study area, as the literature shows [32,33,34,35].
In this research, it is common to observe the phenomena that the total benefit is greater than the total cost. In actual field investigation, the input of some forest regions is greater than its output while in other forest regions the output is greater than its input. The compensation standard is reasonable as long as it is within the rational range. From previous studies, we learned that there are some deficiencies in present ecological compensation so it is worth considering how to effectively incorporate market means and formulate a more reasonable compensation standard [36,37,38,39,40]. The rational use of ecological compensation is a significant policy mechanism for developing forestry and protecting environmental sustainability not only in China, but also in other developing countries which are confronted with acute needs of both economic development and environmental protection. Therefore, the methods used in this study and the application of the results from a policy-making perspective have implications for many developing countries. This regional-scale assessment provides a basis for ecological compensation policy formulation in larger geographical areas. The indirect value of forest ecosystem services in the study area, such as water conservation, soil conservation and carbon sequestration, were greatly underestimated. Applying the techniques of this paper to other areas will reveal if such underestimation is true of many other areas. The method of the current research also indicates that we should fully promote forest protection and management and improve environmental quality by using taking into consideration the Engel coefficient in such analyses.
To raise the compensation standard, this being the case, the local government, communities, and business entities should be mobilized to set up funds, undertake public fund-raising, and encourage private deals with the goal of improving financial investment in local forestry, minimizing the compensation gap, and maximizing the compensation for forest workers’ losses.
Although this paper has integrated regional statistics and survey data, it is still a preliminary study due to some limitations. For example, China is a large multi-regional country where each region has special lifestyle and ecosystem characteristics, so our future work will be to examine the regional eco-compensation standard in more detail.

Acknowledgments

This work was supported in part by the National Natural Science Foundation of China (71503004), Ministry of Education of China Key Grant (14JZD031), and the Environmental Protection Program of Anhui Province (2015-5).

Author Contributions

Tan Li and Ying Zhang conceived and designed the experiments, Tan Li analyzed the data and wrote the paper, and Qingguo Zhang contributed analytical tools.

Conflicts of Interest

The authors declare no conflict of interest. The funding sponsors had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; and in the decision to publish the results.

Appendix A

Table A1. Price parameters of Forest ecosystem service value.
Table A1. Price parameters of Forest ecosystem service value.
Parameter NameInformation SourceUnitValue
Investment in volume of water reservoiraverage cost per unit water reservoir volume was 2.17 Yuan·t−1 according to the 1993–1999 yearbook of China’s water conservation and price index in 2014 was 3.3, so cost for constructing unit volume of water reservoir was 7.16 Yuan·t−1(Yuan·t−1)7.16 (2013)
Cost for purifying waterReplacement cost method(Yuan·t−1)1.05 (2013)
Cost for digging earthwork per unit areaCost for the local artificial excavation(Yuan·m−3)12.6
Price for C fixationTax rate of Sweden for C was 1200 Yuan·t−1(Yuan·t−1)1200
Price for O2 productionIndustrial oxygen generation method(Yuan·t−1)1000
N content of diammonium phosphate (DAP)Manual for chemical products(%)14.0
P content of DAPManual for chemical products(%)15.01
K content of KClManual for chemical products(%)50.0
Price of DAPAverage price during the spring of 2014 (Yuan·t−1)2400
Price of KClAverage price during the spring of 2014(Yuan·t−1)2200
Price of organic matterAverage price during the spring of 2014(Yuan·t−1)320
Price for SO2 treatmentMarket price method(Yuan·kg−1)1.2
Price for fluorochemical treatmentMarket price method(Yuan·kg−1)0.69
Price for NOx treatmentMarket price method(Yuan·kg−1)0.63
Price for cleaning dustMarket price method(Yuan·kg−1)0.15

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Figure 1. Digital elevation map of Yanqing.
Figure 1. Digital elevation map of Yanqing.
Ijerph 15 00565 g001
Table 1. Statistics of the areas and volume of dominant plant species in Yanqing.
Table 1. Statistics of the areas and volume of dominant plant species in Yanqing.
DominantArea/haPercentVolume/m3Volume PercentPer Unit Volume m3/ha
pine12,530.712.3231,533.113.218.5
platycladus7817.37.728,008.51.63.6
larch2178.12.149,647.22.822.8
aspen3051.93.062,399.33.620.4
oak34,651.134.1545,622.931.115.7
locust2402.22.444,469.92.518.5
poplar5004.64.9509,265.129.0101.8
birch4610.14.5131,502.57.528.5
broad-leaf10,580.210.4154,321.28.714.6
Total101,655.81001,756,769.710017.3
Table 2. Economic income of public welfare forest in Yanqing District in 2014.
Table 2. Economic income of public welfare forest in Yanqing District in 2014.
Economic BenefitBenefit (108 Yuan)Per Area (Yuan·ha−1)
Forest products1.941409.07
Non-forest products0.4619.78
Total2.401423.85
Table 3. Ecological income in Yanqing District in 2014.
Table 3. Ecological income in Yanqing District in 2014.
Ecosystem ServicesBenefit (109 Yuan)Benefit per Area (104 Yuan·ha−1)Rank
Water conservation20.251.52
Soil fertilizing9.110.674
Carbon fixation24.421.811
Gas purification0.150.017
Forest protection6.750.55
Biodiversity13.513
Tourism1.350.16
Total75.535.59
Table 4. Social benefit in Yanqing District in 2014.
Table 4. Social benefit in Yanqing District in 2014.
Social BenefitBenefit (105 Yuan)Benefit per Unit Area (Yuan·ha−1)Rank
Science research554.073
Employment20014.802
Health 792.558.701
Development 12.10.904
Total804.678.47
Table 5. Direct cost of public welfare forest in Yanqing District in 2014.
Table 5. Direct cost of public welfare forest in Yanqing District in 2014.
Direct CostCost (109 Yuan)Cost per Unit Area (Yuan·ha−1)
Construction2.011492.54
Production10.077462.69
Operating6.044477.61
Total18.1213,432.84
Table 6. Risk cost of forest in Yanqing District in 2014.
Table 6. Risk cost of forest in Yanqing District in 2014.
Indirect CostCost (109 Yuan)Cost per Unit Area (Yuan·ha−1)
Plant and insect pests2.091537.96
Fire insurance cost4.113273.10
Total6.214811.06
Table 7. Opportunity cost of public welfare forest in Yanqing District in 2014.
Table 7. Opportunity cost of public welfare forest in Yanqing District in 2014.
Opportunity CostResult (109 Yuan)Per Area (Yuan·ha−1)
Forest products1.941409.07
Non-forest products0.4619.78
Total2.401423.85
Table 8. The analytic hierarchy process (AHP) method used in the income analysis of forest in Yanqing District.
Table 8. The analytic hierarchy process (AHP) method used in the income analysis of forest in Yanqing District.
LevelB1B2B3RankRelative Importance of Factor
C10.75 0.4777
C20.25 0.15920.637 (weight of forest economic benefits)
C3 0.0953 0.0246
C4 0.1404 0.0363
C5 0.1404 0.03630.2583 (weight of forest ecological benefits)
C6 0.1404 0.0363
C7 0.1921 0.0496
C8 0.1510 0.0390
C9 0.1404 0.0363
C10 0.52050.0545
C11 0.20100.02100.1047 (weight of forest social benefits)
C12 0.07760.0081
C13 0.20100.0210
Table 9. Total benefit of forest in Yanqing District in 2014.
Table 9. Total benefit of forest in Yanqing District in 2014.
IndexResult (109 Yuan·ha−1)Per Area (Yuan·ha−1)Adjusted Result in per Area (Yuan·ha−1)
Economic benefit0.241423.85460.90
Ecological benefit75.5355,90027,279.20
Social benefit0.0878.4714.85
Total benefit78.0157,402.3214,473.83
Table 10. Total cost of forest in Yanqing District in 2014.
Table 10. Total cost of forest in Yanqing District in 2014.
IndexResult (109 Yuan·ha−1)Per Area (Yuan·ha−1)Adjusted Result in per Area (Yuan·ha−1)
Direct cost18.1213,432.844164.18
Risk cost6.214811.061491.43
Opportunity cost2.41423.85441.39
Total cost26.7319,667.756097
Table 11. Compensation standard estimation.
Table 11. Compensation standard estimation.
YearY (Yuan·ha−1)Cost (Yuan·ha−1)YearY (Yuan·ha−1)Cost (Yuan·ha−1)
2014224960972028994115,623
201525006493202911,05416,709
201627806974203012,29217,870
201730927459203113,66919,112
201834387978203215,20020,441
201938238532203316,90221,862
202042529125203418,79523,382
202147289760203520,90124,901.83
2022525710,438203623,24226,520
2023584611,164203725,84528,244
2024650111,940203828,73930,080
2025722912,770203931,95832,035
2026803913,658204035,53734,117
2027893914,607

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MDPI and ACS Style

Li, T.; Zhang, Q.; Zhang, Y. Modelling a Compensation Standard for a Regional Forest Ecosystem: A Case Study in Yanqing District, Beijing, China. Int. J. Environ. Res. Public Health 2018, 15, 565. https://doi.org/10.3390/ijerph15040565

AMA Style

Li T, Zhang Q, Zhang Y. Modelling a Compensation Standard for a Regional Forest Ecosystem: A Case Study in Yanqing District, Beijing, China. International Journal of Environmental Research and Public Health. 2018; 15(4):565. https://doi.org/10.3390/ijerph15040565

Chicago/Turabian Style

Li, Tan, Qingguo Zhang, and Ying Zhang. 2018. "Modelling a Compensation Standard for a Regional Forest Ecosystem: A Case Study in Yanqing District, Beijing, China" International Journal of Environmental Research and Public Health 15, no. 4: 565. https://doi.org/10.3390/ijerph15040565

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