长三角城市群生态安全的时空演变及影响因素  

Temporal-spatial evolution and influencing factors of ecological security in the city cluster of Yangtze River Delta

作　　者：李瑞发 崔旺来 Li Ruifa;Cui Wanglai(College of Economics and Management,Zhejiang Ocean University,Zhoushan,Zhejiang 316022,China)

机构地区：[1]浙江海洋大学经济与管理学院,浙江舟山316022

出　　处：《水土保持研究》2025年第2期377-386,共10页Research of Soil and Water Conservation

基　　金：国家社会科学基金重大项目“我国海洋战略科技力量体系化建设研究”(22&ZD152)。

摘　　要：[目的]探究长三角城市群生态安全的变化状况,阐明长三角城市群生态安全的影响机制,进而为长三角城市群生态安全的调控和管理提供科学支撑。[方法]构建“健康-风险-服务”框架对2005—2020年长三角城市群的生态安全状况进行综合评价,并利用地理探测器和地理加权回归模型对其影响因素的相对重要性及空间异质性进行了深入探讨。[结果](1)2005—2020年长三角城市群的生态安全状况逐步改善,综合生态安全指数从0.528上升至0.568;空间上总体呈西高东低的格局,莫兰指数从0.292变化为0.322,区域间的空间相关性有所加强。(2)归一化植被指数是影响长三角城市群生态安全的主导因素,影响程度高达0.753,因素间交互作用比单一因素作用的影响程度更强。(3)各因素对长三角城市群生态安全的影响存在空间异质性,自然因素和景观因素对西南地区的影响较大,人类因素的影响集中于中部平原及东部沿海地区。[结论]长三角城市群生态安全水平呈整体向好态势,各城市间存在显著的空间效应,生态治理时需关注污染源防治、国土规划利用以及跨区域共保联治等方面,助力绿色美丽长三角建设。[Objective]The aims of this study are to explore the changing situation of ecological security in the city cluster of Yangtze River Delta,to elucidate the impact mechanism of ecological security in the city cluster of Yangtze River Delta,and to provide scientific support for the regulation and management of ecological security in the city cluster Yangtze River Delta.[Methods]A‘health-risk-service’framework was constructed to comprehensively evaluate the ecological security status of the Yangtze River Delta city cluster from 2005 to 2020.Geographic detector and geographic weighted regression models were utilized to explore the relative importance and spatial heterogeneity of influencing factors.[Results](1)The ecological security status of the city cluster in Yangtze River Delta gradually improved from 2005 to 2020,with the comprehensive ecological security index increasing from 0.528 to 0.568.Spatially,it generally presented a pattern of higher security in the west and lower security in the east,with the Moran′s Index changing from 0.292 to 0.322,indicating a strengthened spatial correlation between regions.(2)The Normalized Difference Vegetation Index was the dominant factor influencing the ecological security of the city cluster in Yangtze River Delta,with a high impact level of 0.753.The interactive effects among factors were stronger than the individual effects of a single factor.(3)The influences of various factors on the ecological security of the city cluster in Yangtze River Delta exhibited spatial heterogeneity.Natural factors and landscape factors had a greater impact on the southwest region,while human factors were concentrated in the central plains and eastern coastal areas.[Conclusion]The ecological security level of the city cluster in Yangtze River Delta had shown an overall good trend,and there were significant spatial effects among cities.Attention should be paid to the prevention and control of pollution sources,land planning and utilization,and cross-regional co-insurance and joint govern

关 键 词：生态安全 时空演变 长三角城市群 

分 类 号：X826[环境科学与工程—环境工程]