Study on trade-offs and synergies of ecosystem services based on mechanical equilibrium model: A case of the Middle Reaches of the Yangtze River Urban Agglomerations
LIANG Yu-qi1,2, WEI Xiao-jian1,2,3, JIANG Ping4, CAI Jin1,2, XIE Ming-rui1,2
1. Key Laboratory of Mine Environmental Monitoring and Improving around Poyang Lake of Ministry of Natural Resources, East China University of Technology, Nanchang 330013, China; 2. School of Surveying and Geoinformation Engineering, East China University of Technology, Nanchang 330013, China; 3. Jiangxi Province Engineering Research Center of Surveying, Mapping and Geographic Information, Nanchang 330025, China; 4. School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, China
Abstract：Based on the use of the InVEST model to estimate six ecosystem services in the middle reaches of the Yangtze River urban agglomeration from 2000 to 2020, a mechanical equilibrium model was constructed by selecting three forces through Principal Component Analysis (PCA). The spatiotemporal evolution of ecosystem services and the characteristics of trade-offs and synergies within the study area were assessed based on the magnitude and deviation of the resultant forces. The conclusions can be summarized as follows:the spatial and temporal characteristics of the six ecosystem services during the study period were obvious, demonstrating the trend of increasing water yield, soil retention and net primary production, while decreasing grain production, carbon sequestration and habitat quality. On the basis of the findings of PCA, the three principal components were renamed as regulation support service, food supply service and water production supply service. The average of coordination variable Ftotal was 5.21, indicating a generally basic coordination state. The synergies among ecosystem services improved and the overall structure tended to be more reasonable. Meanwhile, significant regional differences in coordination degree distribution were observed. Coordination skewness θ was mainly distributed in quadrants I, II and VI, with a greater number of dominant areas for water production supply service (I and VI) compared to regulation support service (II). Regarding coordinated mobility, although there was some leapfrog development, its level still needs to be enhanced. All counties and districts should optimize the relationship between ecosystem services depending on regional natural conditions, resource endowments and socio-economic status. The research results can provide references and decision-making assistance for ecological construction and rational land utilization in the research area.
梁玉琦, 危小建, 江平, 蔡进, 谢名睿. 基于力学平衡模型的生态系统服务协同与权衡关系研究——以长江中游城市群为例[J]. 中国环境科学, 2023, 43(11): 5974-5986.
LIANG Yu-qi, WEI Xiao-jian, JIANG Ping, CAI Jin, XIE Ming-rui. Study on trade-offs and synergies of ecosystem services based on mechanical equilibrium model: A case of the Middle Reaches of the Yangtze River Urban Agglomerations. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(11): 5974-5986.
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