关键词：
雅江县;生态文明;生态安全评价;生态安全格局;阻力面
摘 要：
生态安全格局是在了解区域生态环境现状的基础上,为改善生态环境问题和保护生态环境,通过对区域内的自然要素和人为要素进行规划设计和布局组合,得到由点、线、面构成的空间要素优化配置方案。文章基于生态安全评价、生态安全格局理论以及RS和GIS技术,获取雅江县生态安全格局的分布状况。在生态安全评价结果的基础上,选取土地利用类型、海拔、坡度、生物量、距生态"源"的距离、距耕地建设用地距离等六个要素作为约束条件,利用最小阻力模型来构建生态廊道和生态节点,以优化雅江县生态网络安全格局。结果表明:雅江县生态安全格局综合状况较高。以高水平安全格局为主,面积为414083.81 hm~2,占研究区总面积的54.8%;低水平安全格局261480.02 hm~2,占34.5%;中水平安全格局2310.06 hm~2,占0.3%;较高水平安全格局79079.23 hm~2,占10.4%。构建了由总长度约57.3 km的6条生态廊道、6个生态节点以及5个生态源区组成的点、线、面交织的生态安全格局,为雅江县生态红线划分、主体功能区划提供重要参考依据。
译 名：
The Research on Ecological Security Pattern of Yajiang County
作 者：
DAI Shun-min;HUANG Bei-bei;ZHANG Si-li;Sichuan Forestry Inventory and Planning Institute;
关键词：
Yajiang County;;Ecological civilization;;Ecological security assessment;;Ecological security pattern;;Air resistance plane
摘 要：
On the basis of understanding the present situation of regional ecological environment and in order to improve and protect the ecological environment,ecological security pattern is an integrated optimal distribution plan of spatial element,consisting of points,lines and surfaces by planning and compositing of natural and human factors in one area. Based on the theory of ecological security evaluation and ecological security pattern and the RS and GIS,the distribution of ecological security pattern of Yajiang County was obtained. Six elements including land-use type,altitude,slope,biomass,distance to the ecological source and distance from cultivated land to construction land were selected as constraints on account of ecological security evaluation results. According to the minimum resistance model,the ecological corridors and ecological nodes were built to optimize the ecological network security pattern of Yajiang County. The results showed that the ecological security pattern of Yajiang County was quite good. The area of high level security pattern was414083. 81 hm~2,being the largest and accounting for 54. 8% of the research area.The area of low level, moderate level and higher level security pattern was261480. 02 hm~2,2310. 06 hm~2 and 79079. 23 hm~2,accounting for 34. 5%,0. 3% and10. 4% of the research area respectively. With points,lines and surfaces being interlaced,an ecological security pattern was constructed,which was consisted of six ecological corridors,six ecological nodes and five ecological source regions. The total length of ecological corridor was about 57. 3 km. The ecological security patterncould provide important reference for the division of ecological red line and major function oriented zoning in Yajiang County.
