基于MSPA与MCR的崇左市生态网络构建与优化  

Construction and Optimization of Ecological Network in Chongzuo City Based on MSPA and MCR Model

作　　者：蒋若琳 龚本海 王艺锦 王凌晖[1] JIANG Ruo-lin;GONG Ben-hai;WANG Yi-jin;WANG Ling-hui(College of Forestry,Guangxi University,Nanning 530000,China;Guangxi Tourism Planning and Designing Institute,Nanning 530012,China;School of Civil Engineering and Architecture,Guangxi University for Nationalities,Nanning 530006,China)

机构地区：[1]广西大学林学院,广西南宁530004 [2]广西旅游规划设计院,广西南宁530012 [3]广西民族大学建筑工程学院,广西南宁530006

出　　处：《江西农业学报》2022年第7期122-129,共8页Acta Agriculturae Jiangxi

基　　金：广西国有钦廉林场星岛湖树种调整和改造模式研究(钦廉科字2017-1号)。

摘　　要：以崇左市为研究区,由形态学空间格局分析识别出的具有重要生态价值的核心区面积为4308.30 km^(2),主要分布于南、北部,而中部一带斑块破碎化严重。由景观连通性评价结合斑块面积共提取出生态源地49个。崇左市的综合阻力面呈北高南低、中部高四周低的特征;基于最小累积阻力模型生成潜在生态廊道118条,以林地构成为主。由重力模型筛选出重要廊道75条,集中于北部及东南部。为了填补市内中部源地的缺失,新增生态源地5处。优化后生态网络新增廊道40条,建设踏脚石13个,生态廊道的α值、β值、γ值分别提升了0.04、0.08、0.03,而c值下降了0.000043,表明优化后崇左市生态网络的稳定性得到了提升,而建设成本有所下降。Chongzuo was taken as the study area.The core area with important ecological value identified by morphological spatial pattern analysis is 4308.30 km^(2),mainly distributed in the north and south,and the patch fragmentation is serious in the middle of Chongzuo.A total of 49 ecological sources were extracted from landscape connectivity assessment combined with patch area.The comprehensive resistance surface of Chongzuo is characterized by high in the north and low in the south,high in the middle and low around.Based on the minimum cumulative resistance model,118 potential ecological corridors were generated,mainly composed of forest land.Based on the gravity model,75 important corridors were selected,mainly in the north and southeast.In order to fill the lack of central source area in the city,5 ecological source areas were added.After optimization,40 new corridors and 13 stepping stones were added to the ecological network.The value ofα,βandγof ecological corridors increased by 0.04,0.08 and 0.03,respectively,while the value of c decreased by 0.000043,indicating that the stability of ecological network improved and the construction cost decreased.

关 键 词：形态学空间格局分析 最小累积阻力模型 生态网络 构建 优化 

分 类 号：F323.22[经济管理—产业经济]