摘要
本研究通过采用AHP+GIS相结合及改进分析方法,共选取土壤侵蚀度、植被覆盖度、水体不同距离缓冲区、植被类型、地形起伏度、海拔高度、坡度、坡向、道路不同距离缓冲区及土地利用类型10项指标,综合评估赤水市生态环境敏感情况,以期为赤水市生态修复提供依据,主要结论如下:1)通过层次分析法(AHP),确定了三个大类及10个小类评估指标权重,其中土壤侵蚀度权重最高,为0.1904。2)赤水市综合生态环境敏感等级以不敏感和低敏感等级为主,面积占比为54.85%。从空间分布上看,不敏感与低敏感区主要分布在林地、草地区域,中敏感区主要为耕地与草地相交区域,高敏感区和极高敏感区主要分布在道路、河流及完全开发为建筑用地及耕地沿线附近,占总面积的19.09%,以赤水市城区、官渡镇、石堡乡和长期镇生态环境敏感度高。
In this study,by combining AHP+GIS and improving the analysis method,ten indexes of soil erosion,vegetation coverage,water different distance buffer zone,vegetation type,topographic fluctuation,altitude,slope,slope direction,road different distance buffer zone and land use type were selected,comprehensive evaluation of the sensitive situation of the ecological environment in Chishui city,in order to provide a basis for ecological restoration in Chishui City,the main conclusions are as follows:(1)through the hierarchical analysis method(AHP),the weight of three categories and ten subcategories was determined,soil erosion has the highest weight,for 0.1904;(2)The comprehensive ecological sensitivity level of Chishui city is mainly insensitive and low sensitivity grade,the area accounted for 54.85%.From the perspective of spatial distribution,insensitive and low sensitive area mainly distributed in woodland,grassland area,sensitive area mainly cultivated land and grassland intersection area,high sensitive area is mainly distributed in roads,rivers and complete development and construction land and near cultivated land,accounting for 19.09%of the total area,in Chishui city,Guandu town,township and long-term town line is the most significant.
作者
汪炎林
张磊
周银朋
尹磊
王小宇
WANG Yan-lin;ZHANG Lei;ZHOU Yin-peng;YIN Lei;WANG Xiao-yu(Guizhou Geology and Mineral Surveying and Mapping Institute Co.,Ltd.,Guiyang 550001,China;Institute of Surveying and Mapping,Guizhou Geology and Mineral and Exploration Bureau,Guiyang 550001,China)
出处
《环境生态学》
2023年第4期10-18,共9页
Environmental Ecology
基金
贵州省科技计划项目“基于时空大数据的国土空间生态修复监测评估体系研究与应用”(黔科合支撑〔2022〕一般199)
贵州省地质矿产勘查开发局科研项目“基于3S的山水工程生态环境动态监测与评估体系研究--以贵州乌蒙山三岔河流域为例”(黔地矿科合〔2021〕27号)
贵州地矿测绘院有限公司科研项目“山水林田湖草生态保护修复关键技术体系研究与应用--以纳雍鬓岭集中采矿区项目为例”(黔地矿测科合〔2020〕01号)
贵州省地质矿产勘查开发局地质科研项目“基于无人机遥感在地质灾害隐患点信息提取中的应用”(黔地矿科合〔2021〕30号)资助。
