基于GIS的济南市生态敏感性分析

Ecological Sensitivity Analysis of Jinan City Based on GIS

摘要: 为识别济南市不同区域的生态保护优先级，本文GIS技术为基础，构建由高程、坡度、坡向、水域缓冲区、植被覆盖度和土地利用类型组成的六因子评价体系。各因子按照不敏感、轻度敏感、中度敏感、高度敏感和极度敏感五级赋值，并采用给定综合权重进行加权叠加，依据数据表中的生态敏感指数区间划分综合等级。结果表明：高敏感斑块在济南市中南部及东南部较为集中，北部与部分平坦区域以绿色和浅绿色斑块为主。研究结果可为济南市生态分区管控、山水林田湖草保护和建设用地布局提供空间依据。

Abstract: To identify the priority of ecological protection in different regions of Jinan City, this paper adopts GIS technology to establish a six-factor evaluation system consisting of elevation, slope, aspect, water buffer, vegetation coverage and land use type. Each factor is assigned values at five levels: insensitive, lightly sensitive, moderately sensitive, highly sensitive and extremely sensitive. Weighted overlay analysis is performed with given comprehensive weights, and the comprehensive grades are classified according to the intervals of ecological sensitivity index in the dataset. The results show that highly sensitive patches are concentrated in the south-central and southeastern parts of Jinan, while the northern area and some flat regions are dominated by green and light green patches. The findings can provide spatial references for ecological zoning control, conservation of mountains, rivers, forests, farmlands and lakes, and construction land layout in Jinan City.