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Article

Species Diversity Has a Positive Interrelationship with Aboveground Biomass and a Mismatch with Productivity in a Subtropical Broadleaf Forest on the Wuyi Mountains, China

by
Shuifei Chen
1,†,
Lei Xie
2,†,
Weilun Zhou
2,3,
Hao Chen
1,2,
Xianjun Xu
4,
Sian Jiang
4,
Mingyue Zang
1,
Ye Peng
2,
Xin Chen
2,
Yifan Duan
2,
Lin Chen
2,
Xuexia Li
2,
Hui Ding
1,* and
Yanming Fang
2,*
1
Nanjing Institute of Environmental Sciences, State Environmental Protection Scientific Observation and Research Station for Ecological Environment of Wuyi Mountains, State Environmental Protection Key Laboratory on Biosafety, Ministry of Ecology and Environment, Nanjing 210042, China
2
Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Key Laboratory of State Forestry and Grassland Administration on Subtropical Forest Biodiversity Conservation, Nanjing Forestry University, Nanjing 210037, China
3
Center of Garden Management, Changzhou 213200, China
4
Wuyi Mountain in Fujian Province Institute for Biological Studies, Nanping 354399, China
*
Authors to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Diversity 2022, 14(11), 952; https://doi.org/10.3390/d14110952
Submission received: 17 September 2022 / Revised: 29 October 2022 / Accepted: 3 November 2022 / Published: 5 November 2022
(This article belongs to the Section Biodiversity Loss & Dynamics)
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Abstract

:
The Wuyi Mountains in China are one of the largest and most complete subtropical forest ecosystems at the same latitude in the world. However, our limited understanding of the function of this distinctive ecosystem means that the interrelationship between species diversity and ecosystem functioning needs to be investigated if evergreen broadleaf forests (EBLFs) are to be protected. Here, we calculated species richness, the Shannon–Wiener index, and the Pielou index in large-, medium-, and small-scale (20 m × 20 m, 10 m × 10 m, and 5 m × 5 m) forest dynamics plots (FDPs). We also investigated the interrelationships between species diversity and aboveground biomass (AGB)/productivity in FDPs at the different scales using the generalized linear regression model. The results showed that species diversity and AGB positively interrelated with each other, whereas there was no species diversity-productivity interrelationship in the subtropical BLF on the Wuyi Mountains. The structural equation model (SEM) showed that elevation was a key factor directly affecting AGB. These findings lead to the conclusion that productivity is not solely correlated with species diversity and that abiotic factors probably mediate the positive interrelationship between species diversity and ecosystem functioning. This study provides theoretical basis that can be used to protect EBLFs in subtropical areas and the results can be used to improve the construction of artificial forest communities and vegetation restoration at the same latitude.

1. Introduction

The unreasonable development and utilization of terrestrial resources have caused serious ecological problems, such as soil erosion, greenhouse effects, and global warming, which have adversely affected the stable development of the global ecosystem [1]. Ecosystem functioning and biodiversity are two basic attributes of an ecosystem and the relationship between them has always been a key topic in ecology [2]. As the most important resource pool for terrestrial biodiversity and the largest terrestrial ecosystem on earth, forests are vital regulators of the global carbon cycle and climate mitigation [3,4]. Therefore, determining how forest ecosystem functioning relates to species diversity is key to understanding the mechanisms behind biodiversity maintenance and carbon cycling. The evergreen broadleaf forests (EBLFs) on the Wuyi Mountains are rich in biological resources and are of considerable significance to biodiversity conservation in southeastern China [5]. Therefore, it is important to understand the regulation mechanism underlying aboveground biomass (AGB)/productivity because it supports the scientific and rational protection and utilization of plant resources on the Wuyi Mountains.
Species diversity, as a measurable indicator of community, reflects the basic characteristics of ecosystems and is the result of competition or coordinated coexistence among various species [6]. Species diversity provides the material basis and supporting conditions for the operation and maintenance of ecosystem functioning [6,7]. The AGB within a forest community is representative of the total organic matter accumulated by the community over a certain period of time and it reflects the stability of ecosystem structure and functioning [8]. Understanding and exploring how species diversity and AGB interrelate with each other allows researchers to elucidate how ecosystem functioning is leveraged by species diversity. The quality of the AGB is affected by the traits of the community itself (species composition, assembly, and species richness, etc.) and by the living environment factors (temperature, humidity, topography, landform, and soil, etc.) on which the community depends [9,10]. Biological productivity refers to the material production capacity of organisms and their populations, including ecosystems and biospheres [11]. It changes with the environment and, thus, becomes an indicator of environmental change and the health of the global ecosystem [12,13]. Species diversity was the most commonly used indicator of biodiversity in early research on the interrelationship between biodiversity and productivity [14,15,16]. Species diversity is an indispensable evaluator of ecosystem structure [2]. If species changes alter ecosystem productivity in a certain area under natural conditions, then the system is healthy. If they do not, then the system is in chaos [6]. Therefore, specifying how species diversity relates to productivity in the community is of great significance when attempting to elaborate the role of species diversity in ecosystem functioning.
Previous control experiments, meta-analyses, observational studies, and studies on the mechanisms underlying the interrelationships among species diversity and productivity showed that such relationships are mainly manifested as unimodal, positive, negative, unrelated, or “U”-shaped relationships [17,18,19]. However, there is no consensus among many researchers on the basic mechanism underlying the relationships [18,20,21]. Furthermore, the relationships between species diversity and productivity and their intrinsic mechanisms are highly dependent on scale [22]. In recent years, widespread attention has been paid to the “hump” relationship, positive correlations, and no correlations between biodiversity and productivity [19]. The basis for explaining the “hump” model is mainly the competitive exclusion hypothesis [23]. The competitive exclusion hypothesis states that when productivity is low, productivity increases with species richness because resource scarcity and stress lead to lower numbers of individual species [11,24]. However, when productivity is high, species richness is correspondingly reduced due to competitive exclusion. Putative results based on the biomass ratio suggest that the abundance and traits of the most dominant species affect biomass [23,25,26]. In a community, the direct regulation of primary production is proportional to input and largely depends on the functional diversity of the dominant plants while the species richness of associated species does not play a decisive role [27]. However, associated species have transition effects and may play a foundational role.
The EBLF on the Wuyi Mountains is a natural forest with multiple species and individual combinations of differently aged plants. It has the characteristics of mixed forest and unevenly aged forest [5]. In this study, how the diversity index relates to the forest AGB and productivity were analysed using a linear model to find a theory that could explain the relationship between ecosystem function and species diversity in the EBLF on the Wuyi Mountains. Generalized linear models (GLMs) were used to test whether species diversity relates to productivity and to compare whether the same relationship existed at different scales.
To date, there have been few studies on how species diversity interferes with AGB and productivity in subtropical EBLFs across China. We established a 9.6 ha forest dynamics plot (FDP) on the Wuyi Mountains. This plot was then divided into plots that were 5 m × 5 m, 10 m × 10 m, or 20 m × 20 m in size to represent different scales. Statistical analyses were undertaken to investigate how species diversity relates to productivity and AGB. The following issues were addressed: (1) how species diversity relates to the productivity and AGB in the subtropical EBLF on the Wuyi Mountains; (2) whether there was a scale effect that affects these relationships; and (3) how biotic and abiotic factors affect species diversity and ecosystem functioning. The results from this study will improve understanding about the main factors affecting the AGB and productivity of the subtropical EBLF on the Wuyi Mountains and provide information that can be used to determine how we should approach the relationship between natural forest species diversity and ecosystem functioning.

2. Materials and Methods

2.1. Study Site

The Wuyi Mountains have been listed as an internationally designated biosphere reserve and a World Heritage Site with cultural, natural, and biodiversity value. The study site consisted of a 9.6 ha FDP, which was a subtropical EBLF on the Wuyi Mountains, in Fujian Province on the south-east coast of China (27°35’24.23” N and 117°45’54.53” E, elevation: 454–577 m) (Figure S1) [5]. At this site, the annual average temperature is 17.0–18.4 °C, with an average of 19.2 °C in July (the hottest month) and 10.5 °C in January (the coldest month). Additionally, the average annual rainfall and the annual sunshine hours are 1800 mm and 1910.2 h, respectively [5]. An FDP offers a platform for observing biodiversity in subtropical EBLFs in China. The FDP used in this study was established in the summer of 2013 and a census was conducted in 2018.

2.2. Community Survey and Species Diversity Measuring

In 2013, according to the field protocol used by the Centre for Tropical Forest Science (CTFS), the whole FDP was divided into 240 quadrats (20 m × 20 m), which were then divided into 16 small quadrats (5 m × 5 m). All trees and shrubs with a diameter at breast height (DBH, 1.3 m above ground) ≥ 1 cm in each quadrat were identified to the species level, measured, and mapped. Four topographic variables, namely, mean elevation, slope, aspect, and convexity, were quantified for each 20 m × 20 m quadrat based on the elevation data using the algorithm adopted by the CTFS [28,29]. A re-census was performed in 2018.
Based on the re-census data in 2018, four species diversity indexes [Species richness, the Shannon–Wiener (S-W) index, S-W diversity, and the Pielou index) were calculated using the “vegan” package [30] as follows [6]:
Species richness:
S = n
where S is the species richness in plots of different scales, and n is the number of tree species with a diameter at breast height ≥ 1 cm.
Shannon–Wiener index:
H = − ∑ i = i S p i log x p i
where pi is the relative abundance of species i, pi = Ni/N0, Ni is the abundance of the i species, and N0 is the sum of the abundances of all species.
Shannon–Wiener diversity:
H ′ = e H
where H is the Shannon–Wiener index of quarters, H’ is the Shannon–Wiener diversity.
Pielou index:
J = H log x S
where H is the Shannon–Wiener index, S is the tree richness.

2.3. Measuring Above-Ground Biomass and Productivity

The tree height and under-branch height were obtained by visual observation and the two independent surveys were far apart in terms of time. This meant that the tree heights measured by the two measurements were quite different, and there might be a large error in the AGB estimation. Therefore, this study only used allometric equations based on DBH to calculate the AGB per tree and shrub. The allometric equations are based on 701 woody species determined within 24 large-scale FDPs (Forest Global Earth Observatory, ForestGEO) and are used to estimate the AGB of species in different tropical ecosystems, especially subtropical EBLFs [31]. Each equation is given a weight, which is based on sample-size, climate, and taxonomy [31]. In this study, the relative change in AGB in each quadrat was used to express the productivity of the community [15]. The calculation method is as follows:
P = ( B i o m a s s 2013 / B i o m a s s 2018 ) / t
where P is the productivity of the quadrat, Biomass2014 is the sum of the AGBs in plots with different scales in 2013, Biomass2018 is the sum of the AGBs in plots with different scales in 2018, and t is time interval between 2013 and 2018.

2.4. Data Analysis

A GLM with gamma errors and a log/inverse link function was adopted to show how species diversity relates to AGB at different scales. We chose a model with a smaller AIC value. The optimal equation between the diversity index and AGB/productivity at the same scale was determined using the AIC value. A smaller AIC value represents a better corresponding model. The optimal equation between species diversity and AGB/productivity at the same scale was determined using the p value, which was used to measure whether the model was significant. If the p-value was <0.05, then the model was significant.
We also investigated the causal relationships among species diversity, topographic factors, AGB, and productivity at the 20 m × 20 m scale using a structural equation model (SEM). First, we built a meta-model based on various assumptions and the theoretical relationships among species diversity, topographic factors, AGB, and productivity using the piecewiseSEM package (version: 2.2; Figure S2) [32]. Secondly, d-separation was used to test the fit of the model and Fisher’s C > 0.05 indicated a good fit. All the data analyses were undertaken using R version 4.1.1.

3. Results

3.1. Relationships between Species Diversity and Biomass/Productivity

Table 1 illustrates that at each scale, the GLM with gamma errors and log link function fitting between the three species diversity indexes and AGB had low AIC values for the three species diversity indexes and AGB.
Species richness at the three scales was calculated separately. The small scale (5 m × 5 m) species richness values ranged from 1–30, the medium scale (10 m × 10 m) species richness values ranged from 5 to 50, and the large scale (20 m × 20 m) species richness values ranged from 26 to 76. There was a positive association between AGB and richness (Table 1; Figure 1). Shannon diversity at the three scales was calculated separately. Shannon diversity was 1–24.74 at the small scale, 1.99–39.16 at the medium scale, and 3.39–49.39 at the large scale. We found a positive relationship between AGB and S-M diversity (Table 1; Figure 2), but there was no relationship between AGB and the Pielou index at the small and large scales (Figure 3a,b). The Pielou index was 0.36–0.9 at the small scale, 0.31–0.98 at the medium scale, and 0.36–0.93 at the large scale.
Table 2 shows that there were no interrelationships between species diversity and productivity at the different scales (p > 0.05) (Table 2; Figures S3–S5).

3.2. Key Factors Affecting Above-Ground Biomass and Productivity

The SEM model (Figure 4) shows that there were variations of 2% and 24% in productivity and AGB, respectively. It also indicates that elevation positively affected AGB and productivity in direct and indirect manners, respectively, but negatively influenced the number of individuals in a quadrat. Species richness positively affected AGB and productivity in an indirect way, whereas slope and aspect had no effect on species diversity, AGB, or productivity (Figure 4). The Fisher C value for the whole model was 15.13, indicating that the model was a good fit (p = 0.37).

4. Discussion

The FDP area in the Wuyi Mountains is divided into natural forests with multiple species and different aged plants. It has the characteristics of mixed forests and unevenly aged forests. The results of the re-census of the 9.6 ha FDP on the Wuyi Mountains in 2018 were used to determine how species diversity was related to AGB/productivity after statistically analysing 127 woody plants with DBH ≥ 1 cm out of 71,565 plants (including 3196 plants after the re-census) in the plots. This analysis showed that the relationships between species diversity and ecosystem functioning were consistent, but the response of AGB/productivity to species diversity differed at the different scales. The interrelation between AGB and species diversity can be explained by the niche complementarity hypothesis, whereas the interrelation between productivity and species diversity is more strongly related to sampling effects, which indicates that the two mechanisms are not mutually exclusive but mutually reinforcing. This shows that productivity and AGB are closely related but different and that different indicators of ecosystem function might be required to obtain the different relationships between biodiversity and ecosystem functioning. The patterns and potential mechanisms underlying how the ecosystem affects species diversity are discussed below.

4.1. Positive Relationships Found between Species Diversity and Biomass/Productivity

When other environmental factors were not considered, there were significant positive relationships among species richness, Shannon species diversity, and AGB at the different scales (Figure 1 and Figure 2). This result indicated that AGB gradually increased with species richness and Shannon diversity in the EBLF. At a certain scale, DBH and the tree height of the species have impacts on the ABG [33]. Biomass accumulation gradually rises as the basal area of the tree species and the tree height increase, resulting in an increase in tree biomass [34]. However, an incremental rise in the proportion of individuals in a community increases biodiversity, which also contributes to an increase in biomass [34,35]. More species make greater use of available niche opportunities in the environment, leading to increased resource utilization [36]. In recent years, many studies on plant diversity have also shown that the biomass of the community relies on the richness of the community to a great extent, which might be dominated by the niche complementarity hypothesis [37,38,39]. Therefore, in order to maintain high growth, it is necessary to protect species richness in the Wuyi Mountains.
There was a positive association between the Pielou index and AGB at the medium scale (10 m × 10 m) (Figure 3b). However, at the small (5 m × 5 m) and large scales (20 m × 20 m) (Figure 3a,c), there was no correlation between the Pielou index and AGB. This shows that species had scale-dependent effects on AGB. In the divided quadrats, there are more trees with higher DBHs, such as Castanopsis carlesii, Castanopsis eyrei, and Engelhardtia fenzlii, and the AGB was much higher than that in the quadrats that contained larger numbers of smaller DBH tree species [5]. The AGB amount at small scales in areas affected by natural disasters, such as landslides, is significantly smaller than that at a large scale. As the sample area gradually increases, the influence of these interference factors gradually decreases and a positive correlation between the Pielou index and AGB begins to appear [9]. At a large scale, quadrats may contain highly productive species that are major contributors to ecosystem functioning [40]. Sampling effects dominate the community assembly, resulting in no relationship between the Pielou index and AGB [41,42]. Therefore, when studying species diversity patterns, sampling area is a factor that must be considered.
Interestingly, associations between species diversity and productivity were not detectable at the different scales (Figures S3–S5). There are potentially two reasons for these results. [1] The productivity in the community is mainly determined by the species dominating the community and has little to do with the distribution of plants [43,44] and [2] productivity is also affected by some abiotic factors and the differences in habitat and plant composition have a more obvious effect on productivity [43,44].

4.2. Influences of Environmental Factors on Species Diversity and Ecosystem Functioning

Productivity and AGB have different associations with species diversity. Therefore, it is important to explore the effects of biotic and abiotic factors on productivity and AGB. Elevation has a direct effect on AGB and indirectly exerts this effect through the number of individuals. One possible explanation is that the increase in elevation makes any species niche differences more obvious and space resources are better utilized, which increases AGB in the community [20]. The results also showed that neither biological factors nor topographic factors explained the productivity results. This appears to be the main reason for the lack of an observable interrelationship between productivity and species diversity. Complex topographic factors lead to differences in the availability of soil nutrients, light, water, and other resources between different habitats [40,43,44]. However, in our study, only the effect of topographic factors on AGB/productivity was explored.

5. Conclusions

This study found that the interrelationship between species diversity and AGB was positive, but species diversity and productivity were mismatched. No scale-independent effects were found in this study. Furthermore, biotic factors directly affected AGB and productivity while abiotic factors indirectly affected biomass and productivity by affecting the number of individuals. This study provides a theoretical basis for the protection and maintenance of species diversity in subtropical evergreen and deciduous BLFs.

Supplementary Materials

The following supporting information can be downloaded at: https://www.mdpi.com/article/10.3390/d14110952/s1, Figure S1: Contour map of the Wuyi Mountains Forest dynamics plot; Figure S2: Meta structural equation modelling depicting the influence of topography factors and species diversity on productivity and biomass. Solid line and dotted line represent significant and no significant relationships, respectively. PRO: productivity; BIO: Biomass; SR: species richness; IND: Number of individuals in 20m × 20m subplots; ELE: elevation; CON: convexity; SLO: slope; ASP: aspect; Figure S3: Relationships between species richness and productivity at different scales. (A) 5 m × 5 m; (B) (20 m × 20 m); (C) 40 m × 40 m; Figure S4: Relationships between Shannon diversity and productivity at different scales. (A) 5 m × 5 m; (B) (20 m × 20 m); (C) 40 m × 40 m; Figure S5: Relationships between Pielou index and productivity at different scales. (A) 5 m × 5 m (B) (20 m × 20 m); (C) 40 m × 40 m.

Author Contributions

Conceptualization, S.C.; methodology, L.X. and S.C.; software, L.X.; investigation, H.C., X.X., S.J., M.Z., Y.P., X.C., Y.D., L.C. and X.L.; data curation, W.Z.; writing—original draft preparation, L.X. and S.C.; writing—review and editing, H.D. and Y.F.; project administration, H.D. and Y.F.; funding acquisition, H.D. and Y.F. All authors have read and agreed to the published version of the manuscript.

Funding

This research was funded by “Special Foundation for National Science and Technology Basic Re-sources Investigation of China, grant number 2019FY202300”, “the Basic Scientific Research Funds Programs in the National Public Welfare Research Institutes of China, grant number GYZX200203, 210503” and “Major Biodiversity Conservation Project of the Ministry of Ecology and Environment, grant number ZDGC2019-007-04”.

Institutional Review Board Statement

Not applicable.

Data Availability Statement

https://figshare.com/articles/dataset/Relationships_between_ecosystem_functioning_and_species_diversity/19128167 (accessed on 7 February 2020).

Acknowledgments

We thank all reviewers who provided valuable comments for this paper. We are grateful to other teachers and classmates who participated in the second survey.

Conflicts of Interest

The authors declare no conflict of interest.

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Diversity 14 00952 g001 550
Figure 1. Interrelationships between species richness and AGB at the 5 m × 5 m (A), 10 m × 10 m (B), and 20 m × 20 m (C) scales.
Figure 1. Interrelationships between species richness and AGB at the 5 m × 5 m (A), 10 m × 10 m (B), and 20 m × 20 m (C) scales.
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Diversity 14 00952 g002 550
Figure 2. Interrelationships between Shannon diversity and AGB at the 5 m × 5 m (A), 10 m × 10 m (B), and 20 m × 20 m scales (C).
Figure 2. Interrelationships between Shannon diversity and AGB at the 5 m × 5 m (A), 10 m × 10 m (B), and 20 m × 20 m scales (C).
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Diversity 14 00952 g003 550
Figure 3. Relationships between the Pielou index and AGB at the 5 m × 5 m (A), 10 m × 10 m (B), and 20 m × 20 m scales (C).
Figure 3. Relationships between the Pielou index and AGB at the 5 m × 5 m (A), 10 m × 10 m (B), and 20 m × 20 m scales (C).
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Diversity 14 00952 g004 550
Figure 4. Structural equation model depicting the impact of topographic factors and species diversity on productivity and AGB. Solid and dotted lines represent significant and non-significant relationships, respectively. PRO, productivity; BIO, AGB; SR, species richness; IND, number of individuals in the 20 m × 20 m quadrats; ELE, elevation; CON, convexity; SLO, slope; and ASP, aspect.
Figure 4. Structural equation model depicting the impact of topographic factors and species diversity on productivity and AGB. Solid and dotted lines represent significant and non-significant relationships, respectively. PRO, productivity; BIO, AGB; SR, species richness; IND, number of individuals in the 20 m × 20 m quadrats; ELE, elevation; CON, convexity; SLO, slope; and ASP, aspect.
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Table
Table 1. Optimal model assessment between species diversity and ABG at the different scales. Bold font indicates that the model fitted a linear regression.
Table 1. Optimal model assessment between species diversity and ABG at the different scales. Bold font indicates that the model fitted a linear regression.
Species DiversityScaleInverse LinkLog Link
AICCoefficientsInterceptpAICCoefficientsInterceptp
Species richness5 m × 5 m55,863−8.87 × 10−52.79 × 10−3***55,7980.075.57***
10 m × 10 m16,068−3.86 × 10−65.65 × 10−4***15,9970.036.85***
20 m × 20 m4473.4−1.30 × 10−61.90 × 10−4***4470.70.018.38***
Shannon-Wiener diversity5 m × 5 m55,891−1.01 × 10−42.76 × 10−4***55,8410.085.62***
10 m × 10 m16,050−1.10 × 10−5−6.80 × 10−4***15,9970.036.85***
20 m × 20 m4480.9−1.40 × 10−61.59 × 10−4***4479.30.018.64***
Pielou Index5 m × 5 m55,5950.4 × 10−30.0010.4255,595−0.276.600.38
10 m × 10 m16,067−0.1 × 10−30.0010.5115,9970.036.85***
20 m × 20 m4495.2−9.2 × 10−51.91 × 10−40.124495.40.708.500.12
***: p < 0.05.
Table
Table 2. Optimal model assessment between species diversity and productivity at the different scales. p values for a Poisson distribution with log link indicate whether the model is significant. Bold font indicates that the model fits a linear regression.
Table 2. Optimal model assessment between species diversity and productivity at the different scales. p values for a Poisson distribution with log link indicate whether the model is significant. Bold font indicates that the model fits a linear regression.
Species DiversityScaleCoefficients EstimationInterceptp
Species richness5 m × 5 m–0.004–1.730.68
10 m × 10 m–0.004–1.730.68
20 m × 20 m0.0003–1.820.99
S-W diversity5 m × 5 m–0.004–1.730.68
10 m × 10 m–0.004–1.730.68
20 m × 20 m–0.0004–1.790.99
Pielou index5 m × 5 m–0.004–1.730.68
10 m × 10 m–0.001–1.750.93
20 m × 20 m–0.16–1.660.96
S-W, Shannon-Weiner.
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Chen, S.; Xie, L.; Zhou, W.; Chen, H.; Xu, X.; Jiang, S.; Zang, M.; Peng, Y.; Chen, X.; Duan, Y.; et al. Species Diversity Has a Positive Interrelationship with Aboveground Biomass and a Mismatch with Productivity in a Subtropical Broadleaf Forest on the Wuyi Mountains, China. Diversity 2022, 14, 952. https://doi.org/10.3390/d14110952

AMA Style

Chen S, Xie L, Zhou W, Chen H, Xu X, Jiang S, Zang M, Peng Y, Chen X, Duan Y, et al. Species Diversity Has a Positive Interrelationship with Aboveground Biomass and a Mismatch with Productivity in a Subtropical Broadleaf Forest on the Wuyi Mountains, China. Diversity. 2022; 14(11):952. https://doi.org/10.3390/d14110952

Chicago/Turabian Style

Chen, Shuifei, Lei Xie, Weilun Zhou, Hao Chen, Xianjun Xu, Sian Jiang, Mingyue Zang, Ye Peng, Xin Chen, Yifan Duan, and et al. 2022. "Species Diversity Has a Positive Interrelationship with Aboveground Biomass and a Mismatch with Productivity in a Subtropical Broadleaf Forest on the Wuyi Mountains, China" Diversity 14, no. 11: 952. https://doi.org/10.3390/d14110952

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