扬州大学学报（农业与生命科学版）2025，Vol.46Issue(2)：136-146,11.DOI:10.16872/j.cnki.1671-4652.2025.02.017
基于遥感的崇明三岛景观格局变化研究及生态安全评估
Research on landscape pattern change and ecological security assessment of Chongming Three Islands based on remote sensing
摘要
Abstract
Based on seven remote sensing data from 1999 to 2020,seven indicators such as class area,number of pat-ches,aggregation index were selected.We quantitatively studied the characteristics of landscape pattern changes in the three islands of Chongming(Chongming Island,Changxing Island and Hengsha Island)in 20 years,constructed an eco-logical security evaluation system,and analyzed its driving force factors.The results showed that with the increasing in-fluence of human driving force,the water area of Chongming three islands continued to decline from 1999 to 2020,while the wetland area and the forest area increased in stages,and the agricultural land and building area were always the domi-nant landscape.Landscape fragmentation continued to rise,heterogeneity increased first and then stabilized,the connec-tivity became worse,the tightness between patches decreased,the internal dominant landscape control declined,and the changes in the ecological security level went through three stages(1999-2007 ecological natural restoration stage,2007-2015 ecological destruction stage,2015-2020 ecological artificial restoration stage).The ecological security level was the highest in 2007(at Level Ⅰ,a stable state)and the lowest in 2015(at Level Ⅲ,an unstable state).The research results have guiding significance for the overall ecological protection of the three Chongming Islands in the future and the construction of a world-class ecological island.关键词
遥感/崇明三岛/景观格局/生态安全评估Key words
remote sensing/Chongming Three Islands/landscape pattern/ecological security assessment分类
农业科技引用本文复制引用
王思明,杨红,王春峰..基于遥感的崇明三岛景观格局变化研究及生态安全评估[J].扬州大学学报（农业与生命科学版）,2025,46(2):136-146,11.基金项目
国家自然科学基金资助项目(42177200) （42177200）
上海市滨海典型海域生态环境质量提升技术研究项目(沪海科2015-02) （沪海科2015-02）
