摘要
以位于吉林省西部典型生态脆弱区的大安市为研究区域,运用MCR模型构建最小累积阻力面,并提取生态廊道和节点,从而分析和判别吉林省大安市的生物多样性保护空间安全格局。结果表明:①研究区范围内共提取生态廊道56条,总长度为165. 77km,生态节点53个。从空间分布上看,研究区北部生态廊道和节点数量相对较少,南部分布集中。②不同安全水平区具有一定的空间差异性,低安全水平区为2255. 59km^2,占研究区总面积的46. 23%;较低安全水平区为1287. 35km^2,占研究区总面积的26. 39%;中等安全水平区和高等安全水平区分别为959. 15km^2和376. 82km^2,这两类区域分别占研究区总面积的19. 66%和7. 72%。③合理安排人类生产活动,优化区域生态廊道网络连接,对维护区域生态安全、缓解生态环境压力具有重要的作用。
Based on the study of Da'an City located in a typical ecologically fragile region in western Jilin Province,the MCR model was used to build the minimum cumulative resistance surface and extract ecological corridors and ecological nodes,then analyzed and identified the spatial security pattern of biodiversity conservation in Da'an City.The results showed that:①A total of 56 ecological corridors with the total length of 165.77km and 53 ecological nodes were extracted within the study area.From the perspective of spatial distribution,the number of ecological corridors and nodes in the northern part of the study area was relatively small,while the distribution was concentrated in the southern part.②There were great differences in spatial distribution of different security levels.The low security level zone was 2255.59km^2,accounting for 46.23% of the total area,the lower security area was 1287.35km^2,it occupied 26.39% of the total area,the moderate security level area and the high security level area were 959.15km2 and 376.82km^2 respectively,accounting for 19.66% and 7.72% of the total area.③Reasonable arrangement of human production activities and optimization of regional ecological corridor network connection were particularly important to maintain regional ecological security and relieve ecological environment pressure.
作者
尹婧博
李红
王冬艳
刘蜀涵
YIN Jing-bo;LI Hong;WANG Dong-yan;LIU Shu-han(College of Earth Sciences,Jilin University,Changchun 130061,China;College of Humanities and Law,Northeast University,Shenyang 110169,China)
出处
《资源开发与市场》
CAS
2019年第1期38-44,共7页
Resource Development & Market
基金
国家自然科学基金项目(编号:41571152
41771179)
吉林省教育厅"十三五"社会科学项目(编号:JJKH20180262SK)
关键词
生态脆弱区
生物多样性
生态安全格局
最小累积阻力模型
生态廊道
ecologically fragile regions
biodiversity
ecologically security pattern
minimum cumulative resistance model
ecological corridor
