[1]Yin Ke,Ren Simin.Spatiotemporal differentiation and driving mechanisms of green transformation of cultivated land in Three Gorges Reservoir Area[J].Research of Soil and Water Conservation,2025,32(06):381-390,402.[doi:10.13869/j.cnki.rswc.2025.06.007]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
32
Number of periods:
2025 06
Page number:
381-390,402
Column:
Public date:
2025-10-20
- Title:
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Spatiotemporal differentiation and driving mechanisms of green transformation of cultivated land in Three Gorges Reservoir Area
- Author(s):
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Yin Ke,Ren Simin
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(School of Geography and Tourism,Chongqing Normal University,Chongqing 401331,China)
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- Keywords:
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ecologically fragile zone; green transformation of cultivated land; multi-scale drivers; Three Gorges Reservoir Area
- CLC:
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S718.5
- DOI:
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10.13869/j.cnki.rswc.2025.06.007
- Abstract:
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[Objective] This study aims to investigate the spatiotemporal evolution patterns and their driving mechanisms of green transformation of cultivated land use in the Three Gorges Reservoir Area, a typical ecologically fragile zone, thereby providing scientific support for sustainable utilization of regional cultivated land resources and eco-economic coordinated development. [Methods] Utilizing multi-source data(2007—2021) of land use, socioeconomic statistics, and geographical environment, an evaluation indicator system integrating three dimensions of “space-function-mode” was developed. The entropy method was employed to measure the green transformation levels of cultivated land, and a spatiotemporal dual-fixed-effect Spatial Durbin Model was applied to analyze local effects and spatial spillover effects. [Results] (1) Socioeconomic dominance: GDP per capita (total effect: 0.863) and the proportion of agricultural production value(total effect: 0.723) significantly drove the transformation through cross-regional synergy, while fixed-asset investments only had local effects(direct effect: 0.103). (2) Asymmetric spatial spillover: adjacent urbanization promoted local transformation through labor redistribution(indirect effect: 0.410), but increased adjacent population density triggered “siphon effects”(indirect effect: -0.199). Additionally, premium locations(near urban centers/rivers) demonstrated competitive suppression (indirect effects:-0.466, -0.376). (3) Strong topographic constraints: slope and elevation significantly hindered transformation in 62% of the study area(total effects:-0.654, -0.731), limiting mechanization and large-scale operations. [Conclusion] Green transformation of cultivated land in ecologically fragile zones should adopt a “differentiated coordination” approach forming cross-regional agricultural economic alliances to enhance spatial synergy between GDP per capita and agricultural output; prioritizing high-standard cultivated land development in flat areas(slope<15°); and implementing ecological compensation with cross-regional cultivated land quota trading in areas with complex terrains.