GIS支持下的公路生态环境评价

GIS-based eco-environmental quality evaluation of highway

通过GIS(Geographic Information System)分析功能和熵权计算,研究公路生态环境质量问题。采用压力—状态—响应概念框架模型和专家咨询相结合的方法确定公路生态环境评价指标,对各评价指标进行无量纲化处理后,利用熵理论计算评价指标的权重,并建立公路生态环境质量评价模型。在RS(Remote Sensing)和GIS支持下,分析青海省某公路生态环境现状,借用MATLAB工具计算各指标的熵值和熵权,并利用公路生态环境质量评价模型对该公路的生态环境质量进行定量分析。

Through GIS spatial analysis and entropy calculation,the eco-environmental quality of highway is studied.By use of pressure-state-response model and expert advice method,the highway environment evaluation indexes are determined.The indexes are treated with dimensionless method.On the basis of entropy theory,the weight of evaluation indexes is calculated.Then,the eco-environmental quality evaluation model of highway is set up.Finally,supported by the RS and GIS,the status of ecological environment of a highway in Qinghai Province is analyzed.Using MATLAB tools,the entropy of each index＇s value and the entropy weight are calculated,and the ecological environment quality of the highway is researched by using the eco-environmental quality evaluation model.