农业资源与环境学报2025，Vol.42Issue(4)：855-865,11.DOI:10.13254/j.jare.2024.0254
2000-2020年西南高山峡谷耕地边际化及生态效应
Marginalization and ecological effects of cultivated land in alpine canyons of southwest China from 2000 to 2020
摘要
Abstract
To examine the spatiotemporal distribution and impact of marginalization of cultivated land on ecological quality in the southwestern mountainous canyon region,this study utilized multi-source remote sensing and socio-economic data by employing the GEE platform to assess remote sensing ecological index.Results showed that:from 2000 to 2020,the marginalization ratio of arable land in the southwestern mountainous and canyon regions fluctuated,with implicit margins decreasing from 6 666.74 km2 to 5 045.42 km2 and explicit margins rising from 83.99 km2 to 800.25 km2.Overall,the ecological quality in these areas remained stable or improved,accounting for over 90％except during 2005-2010 when a notable decline occurred due to extreme weather and other factors.The ecological effects of different types of cultivated land marginalization were different.Mild and moderate marginalization had a positive impact on ecological quality,while the problem of ecological quality degradation in severely marginalized areas was more serious.Ecological marginalization and natural marginalization areas had a certain improvement effect on ecological quality,and the negative impact of economic marginalization on ecological quality was more obvious.The study indicates that arable land marginalization in the area initially eases then intensifies,with mixed ecological impacts.Tailored management and conservation strategies are needed for various marginalized zones to enhance land use and ecosystem recovery.关键词
耕地边际化/投入/产出/遥感生态指数/西南高山峡谷/GEEKey words
marginalization of cultivated land/input/output/RSEI/southwest mountain canyon/GEE分类
管理科学引用本文复制引用
李旭,吴秀芹,刘亚楠,董贵华..2000-2020年西南高山峡谷耕地边际化及生态效应[J].农业资源与环境学报,2025,42(4):855-865,11.基金项目
国家重点研发计划项目(2022YFF1302905)National Key Research and Development Program of China(2022YFF1302905) （2022YFF1302905）
