Land Consolidation Potential Assessment by Using the Production–Living–Ecological Space Framework in the Guanzhong Plain, China
Abstract
1. Introduction
- (1)
- Developing an LC potential evaluation system that integrates both subjective perceptions and objective indicators based on PLE functions;
- (2)
- Analyzing the spatial differentiation of LC potential and establishing priority levels within the study area;
- (3)
- Identifying the key constraints across different potential zones and proposing targeted consolidation strategies.
2. Study Area and Research Data
2.1. Study Area
2.2. Data Resources
3. Methodology
3.1. PLE-Oriented Evaluation Model for Rural Land Utilization Efficiency
3.1.1. Development of a PLE-Based Evaluation System for LC Potential
3.1.2. Indicator Weight Calculation
3.2. PLE-Oriented Potential Assessment and Zoning for LC
3.2.1. LWSM and TVCM
3.2.2. JNB Classification
3.3. PLE-Oriented Obstacle Factor Diagnosis in LC
4. Results
4.1. Results of the PLE Utilization Efficiency Evaluation
- The comprehensive evaluation index of production space utilization efficiency ranges from 0.006 to 0.685, indicating a relatively large span. It exhibits significant spatial heterogeneity, forming a pattern characterized by high values in the central area that gradually decrease outward. The highest and moderately high production efficiency zones are mainly concentrated in the western villages of the CG Subdistrict in central Qian County. At the same time, most other areas fall into the low to moderately low categories. Specifically, the evaluation values of PC1 (land use intensity of production land) show a spatial pattern largely consistent with the overall production efficiency distribution. This is because GG is the political, economic, and cultural center of Qian County, where production-related construction land is relatively extensive and exhibits a concentrated spatial layout in the area. In contrast, PC2 (intensity of agricultural land reuse) shows relatively small distribution differences across the county. Except for lower values observed in Zhoujiahe Village in the west and Yongjiu Village and Qian County Forest Farm in the north, most other areas fall within medium-high to high-value zones. This is mainly because these regions are predominantly mountainous or contain reservoirs, resulting in limited available agricultural land.
- The comprehensive evaluation index of living space utilization efficiency ranges from 0.019 to 0.128, with a relatively narrow value span and limited spatial variation. Overall, it shows higher values in the eastern and western regions, while remaining relatively low in the central area. The highest-value areas are primarily concentrated in villages located in LS, XY, and ZC towns in the western part of Qian County, and in ZG town in the east. In contrast, the lowest-value areas are mainly distributed in villages in FY town (north) and DY town (central region). Specifically, the evaluation values of PC3 (living space quality) show higher values in the central region and lower values in both the northern and southern areas, which is associated with denser road networks and higher fragmentation of built-up land in central areas. The evaluation values of PC4 (livability of living space) show a distribution pattern that is generally consistent with the overall living efficiency index, which is characterized by higher values in the eastern and western regions and lower values in the central area. This reflects the relatively better infrastructure and higher living standards found in the western and eastern villages and towns of Qian County. The evaluation values of PC5 (residential land use intensity) display considerable spatial variation across the county and show a marked advantage in the northern region, indicating a distinct north–south gradient. Most northern areas fall into the moderate to high range, while southern areas are predominantly in the moderate to low range. The highest values are observed in Yongjiu, Xianfeng, Qianling, Taiping, and Chenjiawa villages in the north, and Juzhou Village in the central region. The lowest values are concentrated in Huakou and Dongjie villages in the central region. This pattern is linked to the fact that northern areas are located on hilly and gully terrain with relatively lower population densities than the south, resulting in higher per capita built-up land area in the north. In contrast, the lowest evaluation values occur in areas with both limited built-up land area and higher population density, leading to lower efficiency.
- The comprehensive evaluation index of ecological space utilization efficiency ranges from 0.014 to 0.140, with a relatively narrow value span and limited spatial variation. Overall, it shows a marked advantage in the northern region, indicating a distinct south–north gradient. The areas with the highest and moderately high ecological efficiency scores are primarily concentrated in the northern half of Qian County. In contrast, the lowest and moderately low scores are mostly found in the southern half. PC6 (ecological foundation quality) demonstrates relatively limited variation across the county. Most areas fall into the moderate to high-value range, except for lower scores observed in YY Town in the north, CG Town and Zhongxiang Village in the central area, XL Town in the south, and Sangguan and Sanxing villages in the west. This is largely attributed to the smaller proportions of ecological land types, such as forests, grasslands, and water bodies, in those areas. PC7 (ecological space security) shows a clear spatial trend similar to the composite ecological efficiency score, with higher values in the north and lower values in the south. This reflects higher levels of human disturbance, lower vegetation coverage, and greater land degradation in southern regions. PC8 (ecological space fragmentation) also shows limited spatial variation. Most areas fall into the moderate to high-value range, except for relatively low values observed in XY and CG towns in the central region; XL Town and the villages of Yangzhuang, Tuanjie, and Fengxing in the east; and the Qian County Forest Farm in the north. These areas are characterized by higher ecological fragmentation, which has negatively impacted the local ecological environment.
- The comprehensive evaluation index of integrated space utilization efficiency ranges from 0.091 to 0.854, indicating a relatively wide value span and significant spatial heterogeneity. Overall, it shows a clear trend of higher values in the northern region and lower values in the south, reflecting the integrated spatial characteristics of production, living, and ecological efficiency. Areas with the highest consolidation potential are concentrated in the CG Subdistrict in central Qian County, which aligns with the high-value cluster observed in the production efficiency evaluation. Moderately high values are mainly found in the northern towns of LS and ZG, consistent with the high-value areas of living space utilization efficiency. Influenced by the spatial distribution pattern of ecological efficiency, the overall LC potential also demonstrates a north–south gradient, with higher values in the north. By contrast, the southern region of Qian County shows relatively low scores across all three functional dimensions, resulting in the clustering of low-value zones in this area.
4.2. Consolidation Potential and Zoning Results
- Production consolidation potential zones. A total of 155 villages were identified within the production consolidation potential zones, accounting for 88.57% of all villages in Qian County. These villages are predominantly distributed across most areas of the county, excluding the central GG region. According to the classification results, 34 villages (19.43%) fall into the preliminary consolidation zone (score range: 0.033–0.042), 70 villages (40.00%) into the priority consolidation zone (0.025–0.032), and 51 villages (29.14%) into the intensive consolidation zone (0.006–0.024). In terms of spatial distribution, preliminary consolidation zones are primarily clustered in XL Town in the southern part of Qian County, an area known for its high-quality Hongxiantao peach industry. Other preliminary zones are scattered across the southern and central regions, with a few found in the north. Priority consolidation zones are dispersed throughout the county but tend to be more concentrated in the north. Intensive consolidation zones are mainly concentrated in contiguous patches in the western and northern parts of the county, while also appearing sporadically in the central and southwestern regions. This pattern is associated with the high overlap of these areas with forest land, grassland, and water bodies, as well as the relatively low proportion of cultivated land and residential construction land, combined with a high degree of land fragmentation.
- Living consolidation potential zones. A total of 88 villages were identified within the living consolidation potential zones, accounting for 50.29% of all villages in Qian County. These villages are primarily distributed in the northern, central, and southeastern parts of the county. Specifically, 36 villages (20.57%) were classified as preliminary consolidation zones (score range: 0.064–0.075), mostly clustered in XL and ML towns in the southern part of Qian County, LY Town in the east, and YY Town in the north. A total of 29 villages (16.57%) were identified as priority consolidation zones (0.043–0.063), mainly located in JC Town in the south and CG Subdistrict in the central part of the county. Meanwhile, 23 villages (13.14%) were designated as intensive consolidation zones (0.019–0.042), predominantly located in FY Town in the northern part of Qian County and DY Town in the central part.
- Ecological consolidation potential zones. A total of 110 villages were identified within the ecological consolidation potential zones, accounting for 62.86% of all villages in Qian County. In terms of both quantity and spatial distribution, ecological efficiency in the northern rural areas of Qian County is significantly higher than in the central and southern regions. Specifically, 30 villages (17.14%) were identified as preliminary consolidation zones (score range: 0.050–0.064), primarily located in the central areas of LC, DY, and YH. Field investigations reveal that these areas suffer from severe soil erosion, which is largely attributed to low vegetation coverage, rugged and fragmented topography, uneven precipitation distribution, and loose soil texture. A total of 42 villages (24.00%) fall within the priority consolidation zone (0.036–0.049), sporadically distributed across the southern part of Qian County. Meanwhile, 38 villages (21.71%) were classified as intensive consolidation zones (0.014–0.035), mainly concentrated in the southern towns of ML, JC, WC, LY, and ZC. This region serves as a key grain-producing area for food security in Qian County. Despite its fertile soils and suitability for cultivation, long-term issues, such as the improper use of plastic mulch and fertilizers, as well as inadequate treatment of livestock and poultry waste, have led to serious non-point and point-source pollution problems in some cultivated lands.
- Integrated consolidation potential zones. A total of 111 villages were identified within the integrated consolidation potential zones, accounting for 64.16% of all villages in Qian County. These zones are mainly distributed across the southern half of the county and in FY Town in the north, indicating considerable spatial disparities in the integrated development of PLE functions between the central area and the northern and southern regions. Preliminary consolidation zones (score range: 0.158–0.181) include 36 villages (32.43%) and are primarily located in the western part of Qian County and FY Town in the north. Priority consolidation zones (0.129–0.158), comprising 43 villages (38.74%), are concentrated in the southern towns of LC, WC, and XL. Intensive consolidation zones (0.091–0.129), with 32 villages (28.83%), are clustered in the central and southeastern areas, with sporadic distribution in the west and north.
4.3. Obstacle Factor Identification Results
- Significant heterogeneity in obstacle factors is observed across different consolidation subzones within the production consolidation potential zones. In the preliminary and priority consolidation zone, the primary obstacle factor impeding the realization of consolidation potential is PC1, with cumulative obstacle degrees of 0.196 and 0.409, respectively. PC1 is predominantly characterized by high loadings on production building density and industrial-mining built-up land use density, with loading coefficients of 0.993 and 0.994. These variables reflect the spatial clustering of structures associated with secondary and tertiary industries. In contrast, the intensive consolidation zone is primarily constrained by PC2, with a cumulative obstacle degree of 0.597. PC2 is mainly associated with the land cultivation rate and land use intensity, bearing loading coefficients of 0.886 and 0.843. These findings underscore the detrimental impact of fragmented land use patterns on production efficiency.
- Significant consistency in obstacle factors is observed across different consolidation subzones within the living consolidation potential zones. In the preliminary consolidation zone, priority consolidation zone, and intensive consolidation zone, the primary obstacle factor constraining the realization of living consolidation potential is PC4, with cumulative obstacle degrees of 0.241, 0.223, and 0.246, respectively. PC4 is primarily characterized by high loadings on the infrastructure quality assessment and resident satisfaction index, with loading coefficients of 0.914 and 0.851, respectively. These variables capture the adverse effects of deficient infrastructure and low levels of resident well-being on the overall efficiency of living space. Field investigations indicate that the preliminary consolidation zone is significantly impacted by challenges, such as inadequate household waste management and lagging infrastructure development, particularly odor pollution resulting from the open-air dumping of domestic waste. In addition, villages in XY Town identified as part of the preliminary consolidation zone, along with rural settlements in central and northern Qian County designated as priority and intensive consolidation zones, are predominantly located in narrow valley corridors or on relatively flat marginal slopes of gullies within the loess hilly region. These areas commonly experience transportation constraints and suffer from critical shortages in infrastructure provision, including wastewater treatment facilities, gas supply systems, and healthcare services, which have become key barriers to the enhancement of living space efficiency.
- A high degree of consistency in obstacle factors is also evident across different consolidation subzones within the ecological consolidation potential zones. In the preliminary consolidation zone, priority consolidation zone, and intensive consolidation zone, the primary obstacle factor impeding the improvement of ecological consolidation potential is PC7, with cumulative obstacle degrees of 0.266, 0.218, and 0.321, respectively. PC7 is mainly defined by high loadings on the Shannon diversity index and the desertification index, with loading coefficients of 0.827 and 0.890, respectively. These variables reflect the negative impact of land use type diversity and land degradation levels on the overall efficiency of the ecological dimension.
- Notable differences in obstacle factors are observed across different consolidation subzones within the integrated consolidation potential zones. In the preliminary consolidation zone, the primary obstacle factor constraining the realization of integrated consolidation potential is PC8, with a cumulative obstacle degree of 0.241. In the priority consolidation zone, the primary obstacle factor is PC7, with a cumulative obstacle degree of 0.301. For the intensive consolidation zone, the primary obstacle factor is PC4, with a cumulative obstacle degree of 0.265. PC8 is primarily associated with patch density and ecological environment assessment, bearing loading coefficients of +0.896 and −0.578, respectively. After the normalization of negatively oriented indicators, these results reflect the adverse impacts of land use fragmentation and degraded ecological conditions on PLE spatial utilization efficiency.
5. Discussion
5.1. The Impact of the PLE Space Utilization Efficiency on the Potential and Zoning of LC
5.1.1. Impact of Production Efficiency on the Potential and Zoning of LC
5.1.2. Impact of Living Efficiency on the Potential and Zoning of LC
5.1.3. Impact of Ecological Efficiency on the Potential and Zoning of LC
5.2. Suggestions for the LC in Qian County
5.2.1. Measures to Enhance Production Space Utilization Efficiency
5.2.2. Measures to Enhance Living Space Utilization Efficiency
5.2.3. Measures to Enhance Ecological Space Utilization Efficiency
5.3. Limitations
6. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
Abbreviations
PLE | Production–Living–Ecological |
LC | Land Consolidation |
PCA | Principal Component Analysis |
EWM | Entropy Weight Method |
AWM | Attribute-Weighting Method |
LWSM | Linear Weighted Sum Method |
TVCM | Threshold-Verification Coefficient Method |
JNB | Jenks Natural Breaks |
ODM | Obstacle Degree Model |
Appendix A. Questionnaire Design and Results
Appendix B. Ecological Indicator Derivation
Appendix C. Indicator Correlation and PCA Results
Variable | PC1 | PC2 |
---|---|---|
X1 | −0.178 | 0.595 |
X2 | 0.199 | 0.560 |
X3 | 0.417 | −0.019 |
X4 | 0.418 | −0.011 |
Variable | PC3 | PC4 | PC5 |
---|---|---|---|
X5 | 0.286 | 0.111 | −0.418 |
X6 | 0.530 | 0.027 | 0.316 |
X7 | 0.504 | 0.090 | −0.078 |
X8 | 0.180 | 0.622 | 0.020 |
X9 | −0.01 | 0.528 | −0.039 |
Variable | PC6 | PC7 | PC8 |
---|---|---|---|
X11 | 0.434 | 0.014 | 0.111 |
X12 | 0.524 | −0.125 | 0.048 |
X13 | 0.348 | −0.178 | −0.453 |
X14 | −0.062 | 0.520 | −0.008 |
X15 | −0.210 | 0.642 | −0.130 |
Appendix D. Obstacle Factor Analysis
Production Consolidation Potential Zones | Obstacle Factor Rankings | |
---|---|---|
1 | 2 | |
Preliminary consolidation zone | PC1 (0.196) | PC2 (0.078) |
Priority consolidation zone | PC1 (0.409) | PC2 (0.240) |
Intensive consolidation zone | PC2 (0.597) | PC1 (0.301) |
Living Consolidation Potential Zones | Obstacle Factor Rankings | ||
---|---|---|---|
1 | 2 | 3 | |
Preliminary consolidation zone | PC4 (0.241) | PC5 (0.200) | PC3 (0.197) |
Priority consolidation zone | PC4 (0.223) | PC3 (0.170) | PC5 (0.159) |
Intensive consolidation zone | PC4 (0.246) | PC3 (0.151) | PC5 (0.141) |
Ecological Consolidation Potential Zones | Obstacle Factor Rankings | ||
---|---|---|---|
1 | 2 | 3 | |
Preliminary consolidation zone | PC7 (0.266) | PC8 (0.254) | PC6 (0.243) |
Priority consolidation zone | PC7 (0.218) | PC6 (0.179) | PC8 (0.171) |
Intensive consolidation zone | PC7 (0.321) | PC6 (0.212) | PC8 (0.201) |
Integrated Consolidation Potential Zones | Obstacle Factor Rankings | |||||||
---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
Preliminary consolidation zone | PC8 (0.214) | PC4 (0.213) | PC1 (0.209) | PC3 (0.208) | PC6 (0.205) | PC7 (0.203) | PC5 (0.200) | PC2 (0.195) |
Priority consolidation zone | PC7 (0.301) | PC4 (0.264) | PC5 (0.253) | PC3 (0.253) | PC6 (0.252) | PC1 (0.251) | PC8 (0.238) | PC2 (0.11) |
Intensive consolidation zone | PC4 (0.265) | PC7 (0.248) | PC5 (0.199) | PC3 (0.191) | PC1 (0.188) | PC8 (0.183) | PC6 (0.177) | PC2 (0.117) |
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Data Types | Data Sources | Resolution (m) | Collection | Classification | Data Use |
---|---|---|---|---|---|
Qian County administrative boundary data (county-level, town-level, and village-level administrative divisions) | Scientific data registration and publishing system of geographic remote sensing ecological network (GISRS) (http://gisrs.cn/minindex.html, accessed on 8 January 2025) | - | 2020 | Vector | Used to clip land use data according to the study area |
Land use and cover change (LUCC) secondary land category data of China (based on the national land use classification system (GB/T 21010-2017 [41]) | Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences (https://www.resdc.cn/, accessed on 10 January 2025) | 30 | 2020 | Raster | Used to calculate indicators related to land use types |
Soil organic carbon data | Institute of Soil Science, Chinese Academy of Sciences (http://www.issas.cas.cn/, accessed on 12 January 2025) | 250 | 2021 | Raster | Used to compute the proportion of soil organic matter content |
POI data | Gaode map (https://gaode.com/, accessed on 18 January 2025) | - | 2022 | Vector | Used to calculate the production building density and industrial-mining built-up land use density |
Landsat 8 remote sensing imagery | Geospatial data cloud (https://www.gscloud.cn/, accessed on 10 January 2025) | 15 | 2022 | Raster | Used to derive the desertification index |
Road network data | Gaode map (https://gaode.com/, accessed on 4 February 2025) | - | 2021 | Vector | Used to calculate road network density |
Population data | Open land map (https://openlandmap.org/, accessed on 11 January 2025) | - | 2021 | Raster | Used to estimate population density and per capita built-up land area |
Field survey data (includes infrastructure satisfaction, resident satisfaction, and ecological environment evaluation data) | Field investigation | - | 2024 | Excel | Used to assess living and ecological land use efficiency |
Target Level | Indicator Level | Indicator Description | Calculation Method |
---|---|---|---|
Production efficiency | Land cultivation rate | Reflects land resource utilization intensity and structure | |
Soil organic matter content | Indicates carbon-containing organic compounds in soil | ||
Land use intensity | Measures the human exploitation intensity of land resources | Where: La—comprehensive land use intensity index. Ai—grading index for the i-th land use intensity level (level 1: unused land/difficult-to-utilize land; level 2: forest land/grassland/water area; level 3: cultivated land/garden plot; level 4: urban and industrial-mining land) Ci—percentage area of the i-th land use intensity classification level n—number of land use intensity classification levels | |
Production building density (units/km2) | Indicates secondary/tertiary industry development levels | ||
Industrial-mining built-up land use density (units/km2) | Reflects industrial production intensity | ||
Living efficiency | Population density (persons/km2) | Measures population distribution density | |
Per capita built-up land area (m2/person) | Evaluates rural land use efficiency | ||
Fragmentation of built-up land patches | Quantifies the spatial fragmentation of construction land | ||
Road network density (km/km2) | Assess transportation infrastructure rationality | ||
Infrastructure quality assessment | Evaluates public facility completeness (1–5 scale) | Subjective rating (1–5 scale) | |
Resident satisfaction index | Measures quality of life (1–5 scale) | Subjective rating (1–5 scale) | |
Ecological efficiency | Proportion of ecological land area (%) | Indicates the proportion of ecologically functional land | where: Ael— normalization coefficient of the ecological land area ratio index; reference value: 100.5022 |
Habitat quality index | Evaluates ecological environment status | where: Abio—normalization coefficient for the habitat quality index; reference value: 511.2642131067 | |
Patch density (units/hm2) | Measures landscape fragmentation | ||
Shannon diversity index | Quantifies landscape diversity | where: Pi Represents the proportion of patch type i in the landscape | |
Ecological environment assessment | Subjective evaluation of environmental quality (1–5 scale) | Subjective rating (1–5 scale) | |
Desertification index | Assesses land degradation severity | where: FVC (Vegetation Cover Fraction)—degree of surface vegetation coverage NDVI—Normalized Difference Vegetation Index of mixed pixels. NDVIsoil—The NDVI value of bare soil pixels represents the NDVI value of pure vegetation pixels 1,2 |
Metric | Production | Living | Ecological | |
---|---|---|---|---|
Kaiser–Meyer–Olkin | 0.534 | 0.612 | 0.656 | |
Bartlett’s Test | Chi-square | 1077.836 | 208.81 | 339.544 |
d | 6 | 15 | 15 | |
level of significance | 0.000 | 0.000 | 0.000 |
Objective Layer | Principal Component | Explanation Rate (%) | Variable | Principal Component Load |
---|---|---|---|---|
Production | PC1 | 59.566 | X1 Production building density X2 Industrial-mining built-up land use density | +0.993 +0.994 |
PC2 | 37.406 | X3 Land cultivation rate X4 Land use intensity | +0.886 +0.843 | |
Living | PC3 | 37.962 | X5 Population density X6 Fragmentation built-up land patches X7 Road network density | +0.560 +0.779 +0.830 |
PC4 | 20.517 | X8 Infrastructure quality assessment X9 Resident satisfaction index | +0.914 +0.851 | |
PC5 | 17.061 | X5 Population density X10 Per capita built-up land area | −0.589 +0.877 | |
Ecological | PC6 | 43.207 | X11 Proportion of ecological land area X12 Habitat quality index X13 Ecological environment assessment | +0.830 +0.894 +0.538 |
PC7 | 21.319 | X14 Shannon diversity index X15 Desertification index | +0.827 +0.890 | |
PC8 | 14.558 | X16 Patch density X13 Ecological environment assessment | +0.896 −0.578 |
Objective Layer | Principal Component | Weight |
---|---|---|
Production efficiency | PC1 | 0.671 |
PC2 | 0.017 | |
Living efficiency | PC3 | 0.047 |
PC4 | 0.095 | |
PC5 | 0.017 | |
Ecological efficiency | PC6 | 0.020 |
PC7 | 0.128 | |
PC8 | 0.005 |
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Xie, Z.; Wu, S.; Liu, X.; Shi, H.; Hao, M.; Zhao, W.; Fu, X.; Liu, Y. Land Consolidation Potential Assessment by Using the Production–Living–Ecological Space Framework in the Guanzhong Plain, China. Sustainability 2025, 17, 6887. https://doi.org/10.3390/su17156887
Xie Z, Wu S, Liu X, Shi H, Hao M, Zhao W, Fu X, Liu Y. Land Consolidation Potential Assessment by Using the Production–Living–Ecological Space Framework in the Guanzhong Plain, China. Sustainability. 2025; 17(15):6887. https://doi.org/10.3390/su17156887
Chicago/Turabian StyleXie, Ziyi, Siying Wu, Xin Liu, Hejia Shi, Mintong Hao, Weiwei Zhao, Xin Fu, and Yepeng Liu. 2025. "Land Consolidation Potential Assessment by Using the Production–Living–Ecological Space Framework in the Guanzhong Plain, China" Sustainability 17, no. 15: 6887. https://doi.org/10.3390/su17156887
APA StyleXie, Z., Wu, S., Liu, X., Shi, H., Hao, M., Zhao, W., Fu, X., & Liu, Y. (2025). Land Consolidation Potential Assessment by Using the Production–Living–Ecological Space Framework in the Guanzhong Plain, China. Sustainability, 17(15), 6887. https://doi.org/10.3390/su17156887