基于MCR模型的丹江口库区生态安全格局构建  

CONSTRUCTION OF ECOLOGICAL SECURITY PATTERN IN DANJIANGKOU RESERVOIR AREA BASED ON MCR MODEL

作　　者：裴志方 吴彬[2] 范玉龙[1] PEI Zhi-fang;WU Bin;FAN Yu-long(College of Architecture,Nanyang Institute of Technology,Nanyang 473004,China;College of Marxism,Nanyang Institute of Technology,Nanyang 473004,China)

机构地区：[1]南阳理工学院建筑学院,河南南阳473004 [2]南阳理工学院马克思主义学院,河南南阳473004

出　　处：《南阳理工学院学报》2025年第2期93-98,共6页Journal of Nanyang Institute of Technology

基　　金：河南省高等学校重点科研项目(23A170021);南阳理工学院博士科研启动基金项目(NGBJ-2022-36);河南省高校人文社会科学研究一般项目(2025-ZDJH-583)。

摘　　要：生态安全格局构建在维护区域生态功能,保障其生态安全方面发挥着重要作用。以丹江口库区为研究区,在识别生态源地的基础上,选取土地利用、高程、坡度和NDVI共4种因子构建生态阻力面,并基于MCR模型和重力模型提取重要生态廊道,以此构建出库区生态安全格局。结果显示:库区生态安全格局由16个生态源地、22条重要生态廊道以及14个生态节点所构成;受土地利用、地形地貌、植被覆盖等因素影响,库区生态阻力空间分异明显,人类活动对库区生态安全的影响较大;库区中部和西部生态系统流动性较强,而北部相对较弱,未来应加强库区北部生态廊道和生态节点的建设工作。研究结果可为库区国土空间优化提供科学参考。The construction of ecological security patterns plays a crucial role in maintaining regional ecological functions and ensuring ecological security.Taking the Danjiangkou Reservoir Area as the research area,based on the identification of ecological sources,four factors,including land use,elevation,slope,and NDVI were selected to construct an ecological resistance surface.Then,important ecological corridors were identified in the reservoir area using both the MCR model and gravity model.This information was then used to construct an ecological security pattern for the reservoir area.The results showed that the ecological security pattern of the reservoir area was composed of 16 ecological sources,22 important ecological corridors and 14 ecological nodes.Influenced by land use,topography,vegetation coverage,and other factors,the spatial distribution of ecological resistance in the reservoir area was obviously different,and human activities had a greater impact on the ecological security of the reservoir area.The ecosystem mobility in the central and western parts of the reservoir area was strong,while that in the northern part was relatively weak.Future efforts should be made to strengthen the construction of ecological corridors and ecological nodes in the north of the reservoir area.The research results can provide scientific reference for the optimization of land spatial in the reservoir area.

关 键 词：生态安全格局 生态源地 MCR模型 生态廊道 丹江口库区 

分 类 号：X321[环境科学与工程—环境工程]