摘要
生态敏感性评价对于区域经济发展规划、生态环境保护和土地资源的合理利用具有重要的价值.本文选取高程、坡度、坡向、水体、植被覆盖度、道路和土地利用类型 7 个因子,采用层次分析法(AHP),基于GIS空间分析功能构建生态敏感性评价体系,获得各单因子及综合的生态敏感性空间分布与统计情况.结果表明:湖北省建始县生态以中度敏感性为主,中度敏感区主要分布于中部,总面积约1084.15 km2,占比40.68%;以水域为主的高度敏感区在东南与东北部较为集中,面积约 751.70 km2,占比 28.21%;以耕地与草地为主的轻度低敏感区主要分布在西北部,总面积约 657.66 km2,占比 24.68%;以林地与园地为主的极高敏感区和以建设用地为主的极低敏感区面积均较小,分别为 157.39 和 13.85 km2,占比分别为 5.91%和 0.52%.
Abstract
Ecological sensitivity assessment holds significant value for regional economic development planning,ecological environment protection,and rational utilization of land resources.This article selected 7 factors,including elevation,slope,aspect,water system,vegetation coverage,roads,and land use types,and used Analytic Hierarchy Process(AHP)to establish an ecological sensitivity evaluation system based on GIS spatial analysis function.The spatial distribution and statistical analysis of each individual factor and comprehensive ecological sensitivity were obtained.The results show that the ecology of Jianshi County in Hubei Province is mainly moderately sensitive,with moderately sensitive areas mainly distributed in the central region,covering approximately 1 084.15 km2,accounting for 40.68%of the total area.The highly sensitive areas,primarily composed of water bodies,are relatively concentrated in the southeast and northeast,with an area of approximately 751.70 km2,accounting for 28.21%.The mild low sensitivity areas,mainly composed of arable land and grassland,are mainly distributed in the northwest,with a total area of about 657.66 km2,accounting for 24.68%.The extremely sensitive areas,mainly composed of forest land and garden land,as well as the extremely low sensitive areas,mainly composed of construction land,have smaller areas,with 157.39 and 13.85 km2 respectively,accounting for 5.91%and 0.52%of the total area,respectively.
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维普
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