基于MSPA-MCR模型的苏州市生态安全格局构建  

Construction of ecological security pattern in Suzhou city based on the MSPA-MCR model

作　　者：吴逸群 戴科伟 WU Yi-qun;DAI Ke-wei(Department of Environment,Nanjing Normal University,Nanjing 210046,China)

机构地区：[1]南京师范大学环境学院,江苏南京210046

出　　处：《环境生态学》2025年第2期60-66,共7页Environmental Ecology

摘　　要：随着一系列生态安全问题日渐突出,为提升生态系统功能、保障物种多样性以及增强区域之间连通性,本研究以苏州市为研究区,基于形态学空间分析(MSPA)、景观连通性原理、最小累计阻力模型(MCR)等方法对生态源地与生态廊道进行识别与划分,以此构建生态安全格局并对其进行分析与优化。研究发现:苏州市生态源地共17个,总面积2 245.91 km^(2)。其中重要生态源地6个,面积2 111.78 km^(2)。生态廊道41条,总长度691.15 km。重要生态廊道20条,总长度350.52 km。生态节点17个,密集分布在中部水网区域。苏州市整体呈现“一带两区多轴”的生态安全格局。可以通过保护生态源地、廊道与节点,新建踏脚石与缓冲区来实现对生态安全格局的优化与对生态空间的保护。As a series of ecological security problems increasingly prominent,in order to improve the ecosystem function,safeguard species diversity and enhance the connectivity between regions,this study select Suzhou as the research area,ecological sources and ecological corridors were identified and divided based on morphological spatial analysis(MSPA),landscape connectivity principle,and minimum cumulative resistance model(MCR)to build ecological security pattern and analysis and optimization.The study found that there are 17 ecological sources in Suzhou,with a total area of 2245.91 km^(2).Among them,the area of 6 important ecological sources are 2111.78 km^(2).There are 41 ecological corridors with a total length of 691.15 km and 20 important ecological corridors with a total length of 350.52 km.There are 17 ecological nodes,densely distributed in the central water network area.Suzhou city as a whole presents the ecological security pattern of“one belt and two regions and multiple axes”.The optimization of the ecological security pattern and the protection of the ecological space can be realized by protecting the ecological source places,corridors and nodes,and building new stepping stones and buffer zones.

关 键 词：生态安全格局 生态源地 生态廊道 

分 类 号：X826[环境科学与工程—环境工程]