Ecological Sensitivity Analysis of Guangzhou City Based on GIS
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.
ecological sensitivityGISRSecological protectionGuangzhou city
NETL
NSTL
万方数据
