Study on Ecological Security Assessment of Jungar Banner Based on PSR Model
Jungar Banner has complex topography,and is affected by natural disasters such as climate drought,overgrazing,over-exploitation of mineral resources and human activities.Jungar Banner has a fragile ecological environment,which is a typical ecological fragile area in In-ner Mongolia section of the Yellow River Basin.Based on the social statistical data of Jungar Banner from 2000 to 2019 and landsat TM/OLI remote sensing images data,the ecological security evaluation index system of Jungar Banner was established by using PSR model,and the important driving factors affecting the ecological security of Jungar Banner were screened out by using grey correlation model,and the ecologi-cal security of Jungar Banner was predicted.The results show that a)the comprehensive evaluation index of ecological security in Jungar Ban-ner shows an increasing trend from 2000 to 2019,and the ecological security status remains at the critical security level,indicating that the ecological security status in this region has been improved.b)The dynamic change of ecological security is closely related to the change of the proportion of regional secondary industry,annual average temperature,urban area,population and Engel coefficient.c)The results of the ecological security prediction model of Jungar Banner show that the ecological security index of this area will continue to rise in the next 10 years.
万方数据
维普
