摘要
以新疆天山北坡城市群为研究区域,使用InVEST模型,ArcGIS软件和最小阻力(MCR)模型等方法,对该区域生态系统服务供需现状进行分析.依据供需的匹配度和耦合协调度,对生态安全格局进行构建.结果表明:生态系统服务供需呈现显著的空间分布不均,山地和绿洲地带成为生态系统服务的核心输出区,人口高度集中的市中心则成为生态系统服务需求的集中区域.6000m网格尺度上生态系统服务供需平衡的信息熵和变异系数值分别达到了1.48和0.41;乡镇尺度上分别为1.44和0.43.由综合生态系统服务供需比共同确定946个生态源地,面积达10003.70km^(2),在城市群中西部地区分布密集;生态廊道共2291条,长约22191.89km,呈网状分布;生态节点共151个,障碍点共2082km^(2),主要分布于各城市中心以外的区域.对该区域内723个乡镇及街道依据乡镇尺度的生态系统服务供需关系进行分类,共划分出24个生态协调区,55个生态保育区,48个生态改良区,176个生态控制区和420个生态修复区.其中,生态修复区需优先缓解生态压力,实施退耕还林和湿地恢复等生态修复工程.
This study takes the urban agglomeration on the northern slope of the Tianshan in Xinjiang as the research area.The ecosystem service supply and demand were analyzed through the InVEST model,ArcGIS software,and the Minimum Cumulative Resistance(MCR)model.The ecological security pattern were built according to the matching degree and coupling coordination of ecosystem service supply and demand.The results indicated that the ecosystem service supply and demand exhibited significant spatial heterogeneity.The mountainous and oases were the core output areas of ecosystem services,while the downtown areas with a highly concentrated population were the concentrated demand areas of ecosystem services.The information entropy and variation coefficient of ecosystem services were 1.48 and 0.41,respectively in 6,000m grid scale,and 1.44 and 0.43,respectively in town scale.946 ecological sources with 10,003.70km^(2) were confirmed by the comprehensive ecosystem service supply and demand ratio which were distributed in the central and western parts of urban agglomerations.2,291 ecological corridors with a length of 22,191.89km were distributed as a net.151 ecological nodes and 2,082km^(2) obstacle points were distributed outside the urban center.24 ecological coordination areas,55 ecological conservation areas,48 ecological improvement areas,176 ecological control areas and 420 ecological restoration areas were classified through the ecosystem service supply and demand relationship in town scale.Ecological restoration projects,such as returning farmland to forests and restoring wetlands,should be prioritized in ecological restoration zones to alleviate ecological pressure.
作者
李大强
张飞云
周红涛
马丽娜
李倩
LI Da-qiang;ZHANG Fei-yun;ZHOU Hong-tao;MA Li-na;LI Qian(School of Public Administration,Xinjiang Agricultural University,Urumqi 830052,Xinjiang,China;Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,Xinjiang,China;Xinjiang Key Laboratory of Water Cycle and Water Utilization in Arid Regions,Urumqi 830011,Xinjiang,China;Xinjiang Field Scientific Observation Institute of Tianshan Snow Avalanche,Xinyuan,Xinjiang 835800,China)
出处
《中国环境科学》
北大核心
2025年第8期4706-4714,共9页
China Environmental Science
基金
新疆干旱区水循环与水利用重点实验室基金(XJYS0907-2023-06)。
关键词
生态系统服务供给与需求
生态管理分区
生态安全格局
天山北坡城市群
ecosystem services supply and demand
ecological management zoning
ecological security pattern
urban agglomeration in the northern slope of the Tianshan
