[1]Zhang Mingdan,Li Yungang.Study on Ecosystem Service Trade-off/Synergy Relationship in Ruili-Daying River Basin[J].Research of Soil and Water Conservation,2023,30(06):415-422.[doi:10.13869/j.cnki.rswc.2023.06.017]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 06
Page number:
415-422
Column:
Public date:
2023-10-10
- Title:
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Study on Ecosystem Service Trade-off/Synergy Relationship in Ruili-Daying River Basin
- Author(s):
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Zhang Mingdan1, Li Yungang2
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(1.Institute of International Rivers and Eco-security, Yunnan University, Kunming 650091, China; 2.Yunnan Key Laboratory of International Rivers and Transboundary Eco-security, Yunnan University, Kunming 650504, China)
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- Keywords:
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ecosystem service; trade-off/synergy; InVEST model; Ruili-Daying River Basin
- CLC:
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X171.1
- DOI:
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10.13869/j.cnki.rswc.2023.06.017
- Abstract:
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[Objective] The aims of this study are to explore the ecosystem service trade-offs and synergistic relationships in Ruili -Daying River basin, and to provide a theoretical basis for land management and ecosystem service optimization in this region. [Method] The InVEST model was used to quantitatively evaluate the ecosystem service of water yield, soil retention, and carbon storage in Ruili-Daying River Basin based on multi-source data including the land use and land cover, topography, meteorology and soil conditions covering 2000, 2010 and 2020. Moreover, the characteristics of trade-offs and synergies among different ecosystem services were analyzed by using the spatial overlay analysis method. [Results](1)From 2000 to 2020, the areas of forest land, cropland, grassland, wetland and bare land decreased in Ruili-Daying River basin, while the shrubland, construction land and water bodies increased gradually.(2)The mean water supply depth, unit amount of soil retention and carbon storage were 749.60 mm, 365.78 t/hm2, 137.51 t/hm2, respectively. In the past 20 years, the water yield and soil retention increased at first and then decreased, and the change of carbon storage was not obvious.(3)The ecosystem services provided by different land use types differentiated, with construction land, shrubland and forest land providing the highest water yield, soil retention capacity and carbon storage per unit area, respectively.(4)The ecosystem service relationship in Ruili-Daying River Basin was dominated by trade-offs, in which the proportion of severe trade-off areas was as high as 55%, the proportion of weak trade-off areas was about 4%~8%, the proportion of areas with poor synergy was about 24%~30%, and the proportion of areas with good synergy was about 10%~13%. During the study period, the proportion of with poor synergistic areas decreased by 5.78%, while the proportion of weakly trade-off, severely trade-off and well synergistic areas increased by 2.79%, 0.79% and 2.2%, respectively. [Conclusion] The degree of ecosystem service trade-offs in Ruili-Daying River basin was enhanced while the overall level of services was on an upward trend.