基于最小阻力模型的武安市景观安全格局研究

Study on Landscape Security Pattern of Wu'an City Based on Minimum Cumulative Resistance Model

矿产资源的开采虽然使资源型城市的社会经济迅猛发展,但也造成了环境污染和景观安全格局破坏。以资源型城市武安市为研究区,基于"源—汇"理论和最小阻力模型,确定武安市的"生态源"和"干扰源",构建综合阻力面,提取重要生态廊道,分析其景观安全格局状况。研究结果表明:(1)"生态源"集中分布在武安市西部自然保护区,中东部分布较少且连通性差;(2)矿产资源开采区的生态阻力值较大,交通建设对生态过程扩展起阻碍作用;(3)生态廊道网络布局特征明显,南、北氵名河连贯东西,南北方向因生产建设干扰强烈出现断层;(4)矿区周围生态用地破碎严重,应将生态规划与城市规划、矿区规划相结合,整体上保护资源型城市的景观生态安全格局。

Although the exploitation of a large amount of mineral resources made the rapid development of social economy,it also caused the serious pollution of the ecological environment and the destruction of landscape ecological security pattern,this required us to pay enough attention to discover these problems and to take some measures to solve them. The resource-based city of Wu'an was the study area,based on the'source-sink'theory and the minimum cumulative resistance( MCR) model,the 'ecological source' and 'disturbance source' of Wu'an City were established,then built the comprehensive resistance surface,extracted the important ecological corridor,and analyzed the landscape ecological security pattern. The results showed that:(1)The 'ecological source' was distributed in the west of Wu' an nature reserve,middle eastern distribution was less and the connectivity was very poor.(2)The ecological resistance value of the mineral resources exploitation area was large,and the construction of the traffic had an obstacle to the expansion of the ecological process.(3)The characteristics of the layout of the ecological corridor network was obvious,the South Ming River and North Ming River coherent east-west direction,north direction and south direction due to production and construction interference strong fault.(4)The ecological patches around the mining areas were too serious,and ecological planning should be combined with urban planning and mining planning to protect the landscape ecological security pattern of resource-based cities as a whole,so as to promote the protection of the landscape ecological security pattern of resource-based cities.