水土保持通报2025，Vol.45Issue(2)：371-382,12.DOI:10.13961/j.cnki.stbctb.2025.02.037
数量—质量—生态"三位一体"视角下云南省耕地利用格局变化分析与风险评估
Analysis and risk assessment of cultivated land use pattern change in Yunnan Province from quantity-quality-ecology tripartite perspective
摘要
Abstract
[Objective]The change in cultivated land use patterns in Yunnan Province was studied from multiple perspectives,and the risk level of cultivated land use was divided to inform protection policies and management strategies to provide a reference for the protection of cultivated land in other areas.[Methods]Utilizing land use survey data from 2011 and 2021,and adopting a quantity-quality-ecology tripartite perspective,we comprehensively analyzed the characteristics of changes in cultivated land use patterns by employing landscape indices and the pressure-state-response(PSR)model.Based on the state-space model,we categorized the risk levels of cultivated land use.[Results]① Regional variations were observed in the changes of cultivated land quantity in Yunnan Province from 2011 to 2021,with districts and counties exhibiting significant changes and displaying a distribution pattern characterized by'overall scattered and local aggregation.'② The average soil layer thickness of cultivated land decreased,the content of soil organic matter and cation exchange capacity increased,and the patch density(PD)of cultivated land increased by 1.251;aggregation index(AI)and mean shape index(MSI)decreased by 5.672％and 0.055,respectively,indicating that the degree of farmland fragmentation increased,agglomeration weakened,and patch shape tended to be regular.③ The overall level of ecological security of cultivated land declined,revealing a spatial pattern of'high in the south,low in the north,polarized in the middle.'Based on the dynamic changes in cultivated land,we conducted risk zoning for cultivated land use in Yunnan Province and proposed regulatory suggestions.[Conclusion]Northeast,southwest,and central Yunnan are hotspots for cultivated land change in Yunnan Province.Although soil quality across the province has improved,soil fragmentation has intensified.The ecological security level of cultivated land has shown a downward trend,necessitating precise management tailored to local conditions and risk zones.关键词
耕地数量/耕地质量/生态安全/格局变化/风险评估/云南省Key words
cultivated land quantity/cultivated land quality/ecological security/pattern changes/risk assessment/Yunnan Province分类
管理科学引用本文复制引用
刘川,张述清,黄义忠,李永平..数量—质量—生态"三位一体"视角下云南省耕地利用格局变化分析与风险评估[J].水土保持通报,2025,45(2):371-382,12.基金项目
国家自然科学基金项目"滇中城市群'三生空间'多尺度耦合及多目标协同优化研究"(42301304) （42301304）
云南省哲学社会科学研究基地项目"云南省耕地时空分布特征与数量质量动态平衡研究"(ZD202218) （ZD202218）
