基于GIS的广州市生态敏感性分析研究
Ecological Sensitivity Analysis of Guangzhou City Based on GIS
朱志熹 1肖琳 1李彬朝 2李汶娟1
作者信息
- 1. 仲恺农业工程学院, 广东 广州 510225
- 2. 广东省地质工程公司, 广东 广州 510520
- 折叠
摘要
城市生态环境是居民生存和发展的物质基础,生态敏感性对城市生态环境保护和可持续发展具有主要意义.文章以广州市为例,进行生态敏感性分析,将研究区分为不敏感、低敏感、中度敏感和高度敏感4 个敏感区域.基于GIS和RS技术,采用层次分析法(AHP)建立评价因子体系,选取高程、坡度等9 个因子,确定各指标权重并进行GIS加权叠加,综合分析.结果表明,广州市综合生态敏感性较高,以中度敏感和低敏感为主,两者占比为63.37%,广泛分布在广州市全域,多为山区及水系周边地区;高敏感占比为21.12%,分布在东北部山区及水系;不敏感占比为15.51%,主要分布在中部和西南部城镇中心.
Abstract
The urban ecological environment is the material basis for the survival and development of resi-dents,and ecological sensitivity is of great significance to the protection and sustainable development of the ur-ban ecological environment.Taking Guangzhou as an example,this paper analyzes ecological sensitivity and di-vides the study into four sensitive areas:insensitive,low sensitive,medium sensitive,and high sensitive.Based on GIS and RS technology,the evaluation factor system was established by the Analytic Hierarchy Process(AHP),and 9 factors such as elevation and slope were selected to determine the weight of each index and perform GIS-weighted superposition for comprehensive analysis.The results showed that the comprehensive ecological sensitivity of Guangzhou was high,mainly moderate sensitivity and low sensitivity,accounting for 63.37%,which were widely distributed in the whole area of Guangzhou,mostly in mountainous areas and sur-rounding water systems.The proportion of high sensitivity was 21.12%,which is distributed in the mountainous area and river system in northeast China.The proportion of insensitivity was 15.51%,mainly distributed in the central and southwest urban centers.
关键词
生态敏感性/GIS/RS技术/生态保护/广州市Key words
ecological sensitivity/GIS/RS/ecological protection/Guangzhou city引用本文复制引用
出版年
2024
NETL
NSTL
万方数据