生态学报2018，Vol.38Issue(2)：432-442,11.DOI:10.5846/stxb201609261944
南水北调中线汉中市水源地生态脆弱性评价与特征分析
Analysis of Eco-environmental vulnerability characteristics of Hanzhong City, near the water source midway along the route of the south-to-north water transfer project, China
摘要
Abstract
South-to-north water transfer project is a large project aimed at alleviating the serious water resource shortage in northern China.The eco-environment quality of the water source area is directly related to water quality,safety,and longterm operation of the water transfer project.Further,it has important effects on regional,social,and economic development.In the present study,the eco-environmental vulnerability of Hanzhong City,which is located midway along the route of the south-to-north water transfer project,was quantitatively evaluated by using " pressure-state-response" model and spatial principal component analysis based on remote sensing and GIS technology.The results showed that:1) the ecoenvironmental vulnerability of Hanzhong City was at a medium level and was determined by the interaction of human activities and natural environment.The elevation,annual average precipitation,annual average temperate,per capita gross domestic product (GDP),and soil erosion intensity were the main driving factors.2) In addition,the eco-environment vulnerability varied with altitudinal gradient.Vulnerability of the medium and high-medium mountain areas was higher than that of the high mountain area,and it was low in the low mountain and hill-gully areas.3) Among the administrative divisions,the areas with high eco-environment vulnerability were mainly distributed in the Zhenba,Xixiang,Foping,Lueyang,and Ningqiang counties;the areas with low vulnerability were located in the Hantai district.4) The regional ecoenvironmental vulnerability of Hanzhong City had strong spatial autocorrelation.The spatial variation was larger in the direction of 45° and 135°.It could provide theoretical and scientific basis for ecological restoration and planning of regional sustainable development of the water source midway along the route of the south-to-north water transfer project.关键词
生态脆弱性/可持续发展/生态恢复/南水北调中线工程/汉中市Key words
eco-environmental vulnerability/sustainable development/ecological restoration/south-to-north water transfer project/Hanzhong City引用本文复制引用
王志杰,苏嫄..南水北调中线汉中市水源地生态脆弱性评价与特征分析[J].生态学报,2018,38(2):432-442,11.基金项目
贵州大学引进人才科研项目(贵大人基合字(2016)036号) （贵大人基合字(2016）
贵州省科技厅科技支撑计划项目(黔科合支撑[2017]2854) （黔科合支撑[2017]2854）
镇宁县城城市绿地系统遥感勘察项目(701231172201) （701231172201）
