沈抚新城生态安全格局的构建  

Construction of regional ecological security pattern for Shenfu new town

作　　者：师鹏飞[1] 李爽[1] 姜虎生[1] 马会强[1] SHI Pengfei;LI Shuang;JIANG Husheng;MA Huiqiang(College of Chemistry,Chemical Engineering and Environmental Engineering,Liaoning Shihua University,Fushun 113001,China)

机构地区：[1]辽宁石油化工大学,化学化工与环境学部,辽宁抚顺113001

出　　处：《生态科学》2020年第2期41-49,共9页Ecological Science

基　　金：国家自然科学基金项目(41372236);辽宁省高等学校创新人才支持计划(LR2016059);辽宁省自然科学基金指导计划(201602469);辽宁省教育厅基本科研项目(L2017LQN001)。

摘　　要：以沈抚新城为研究对象,利用GIS空间分析功能,分析得到基于水源涵养、生物多样性保护、土壤侵蚀敏感性、地质灾害敏感性四种单一生态过程评价的生态用地,将评价结果叠加重分类为一般重要生态用地、重要生态用地、极重要生态用地,并以面积>1 km^2的极重要生态用地为生态源,现状土地类型为阻力因子,基于MCR模型构建了沈抚新城综合安全格局体系。结果表明:研究区内高水平安全格局缓冲区面积112.96 km^2,占研究区土地总面积的18.66%;中水平安全格局缓冲区面积94.43 km^2,占研究区土地面积的15.60%;低水平安全格局缓冲区面积176.23 km^2,占研究区土地面积的29.11%;生态廊道60条,总长275.77 km;生态战略点49个。本研究可以摸清研究区的生态安全状况,同时可以为城镇建设用地的扩张以及生态用地空间的保护提供定量指引。Taking Shenfu New Town as the research object,and utilizing the spatial analysis function of GIS,the ecological land based on water conservation,biodiversity conservation,soil erosion sensitivity and geological hazard sensitivity were analyzed.The results are overlapped and classified into general important ecological land,important ecological land and extremely important ecological land.Based on the MCR model,the comprehensive security pattern system of Shenfu New Town was constructed with the extremely important ecological land with an area larger than 1 km^2 as the ecological source and the current land type as the resistance factor.The results show that the buffer area of high level security pattern in the study area is 112.96 km^2,accounting for 18.66%of the total land area of the study area;the buffer area of medium level security pattern is 94.43 km^2,accounting for 15.60%of the land area of the study area;the buffer area of low level security pattern is 176.23 km^2,accounting for 29.11%of the land area of the study area;including 60 ecological corridors with a total length of 275.77 km and 49 ecological strategic points.In this study,the ecological security situation of the study area was figured out,and quantitative guidance for the expansion of urban construction land and the protection of ecological land space was provided.

关 键 词：生态用地 生态安全格局 MCR模型 沈抚新城 

分 类 号：X321[环境科学与工程—环境工程]