基于生态网络构建与优化的太仓国土空间生态保护修复关键区域诊断与识别

Diagnosis and identification of key areas for ecological conservation and restoration in Taicang territorial space based on ecological network construction and optimization

以江苏太仓作为研究区域,基于生态系统服务评估确定生态源地,采用最小累积阻力模型(MCR)和重力模型构建生态廊道,提出生态网络优化模式和对应管控策略。经计算和分析,提取面积30365.46 hm 2的重要生态功能区作为生态源地;识别生态源地161.46 km 2,其中水域生态源50个、陆域生态源地47个;提取水域生态廊道53条、陆域生态廊道56条,且水域生态廊道相较于陆域生态廊道更为完善,连通性和稳定性更高;识别需优先保护的生态夹点25个,优先修复的生态障碍点18个。研究成果可为系统性开展国土空间生态保护修复提供借鉴和指导。

Taking Taicang in Jiangsu Province as the research area,the ecological source was determined based on ecosystem service assessment.The minimum cumulative resistance(MCR)model and gravity model were used to construct the ecological corridor,and the ecological network optimization model and corresponding management and control strategy were proposed.The important ecological functional area of 30,365.46 hm 2 was selected as the ecological source area.Ecological source areas of 161.46 km 2 were identified,including 50 water source areas and 47 land source areas.There were 53 ecological corridors in the water area and 56 ones in the land area.Compared with the ecological corridors in the land area,the ecological corridors in the water area were superior,with higher connectivity and stability.Twenty-five ecological spots requiring priority protection and eighteen ecological obstacle spots requiring priority restoration were identified.The research results can provide reference and guidance for systematic ecological protection and restoration of territorial space.