江西科学2025，Vol.43Issue(5)：813-821,9.DOI:10.13990/j.issn1001-3679.2025.05.001
环鄱阳湖区域耕地生产力时空演变与可持续性分析研究
Spatio-temporal Evolution and Sustainability Analysis of Cultivated Land Productivity in the Poyang Lake Rim Region
摘要
Abstract
The spatial and temporal analysis of cultivated land productivity is crucial for sup-porting national food security and achieving agricultural"dual carbon"strategic goals.Using MODIS-GPP data,land use datasets,and the Google Earth Engine(GEE)cloud platform,this study applied the Sen's slope,Hurst index,and occupation-compensation balance analysis to assess the trends,stability,and sustainability of cultivated land productivity in the Poyang Lake region,and further examine the occupation-compensation balance of culti-vated land productivity.The main findings are as follows:1)Over the past 24 years,cultivat-ed land changes were primarily driven by reforestation,conversion to grassland or water bodies,and urban expansion.The area of cultivated land loss slightly exceeded the area of gain.2)Cultivated land GPP showed a fluctuating upward trend,with faster growth during 2000-2010 compared to 2011-2023.3)Approximately 70%of cultivated land had GPP val-ues between 600 and 1 000 g C·m-2·a-1.Regions with significantly increasing GPP ac-counted for 79.28%,while those with significant declines accounted for only 3.54%.Stable GPP areas accounted for 62.03%,whereas unstable regions accounted for 37.97%,with a future trend indicating a continued decline in GPP.4)The cultivated land productivity in the Poyang Lake rim region and most of its prefecture-level cities achieved an occupation-compensation balance,while an imbalance was observed in Nanchang City.关键词
环鄱阳湖区域/退耕还林/耕地生产力/趋势分析/占补平衡Key words
Poyang Lake rim region/reforestation/cultivated land productivity/trend analy-sis/occupation-compensation balance分类
资源环境引用本文复制引用
何悦,钱瑛,黄端,邹时林,池泓..环鄱阳湖区域耕地生产力时空演变与可持续性分析研究[J].江西科学,2025,43(5):813-821,9.基金项目
江西省自然科学基金项目(20224BAB213038) （20224BAB213038）
江西省社科基金项目(24ZXSKJD30) （24ZXSKJD30）
东华理工大学研究生创新基金项目(DYHC-202330). （DYHC-202330）
