Evaluation of Ecological Environment Quality in Fujian Province Based on Remote Sensing and GIS Techniques

Abstract

In the present study,the vegetation,soil brightness,moisture and heat indices are extracted from multi-band enhanced thematic mapper remote sensing image to describe ecosystem status.Pearson correlation analysis was applied to find the relationship between the background value of remote sensing and these indices,climate data,and other geographical auxiliary information.In each index type,there was an index was selected as the evaluation index for its correlation variables was the biggest.These indices were considered as independent variables,the background value of remote sensing was considered as dependent variable,and a regression equation of ecological environment background value was built using multilinear regression analysis.Then the ecological environment background value of the whole Fujian province was calculated using this regression equation.The result was compared with the result assessed by the eco-environment quality evaluation,which was used by the China national environmental monitoring center.The tendency of ecological environment quality assess by the two method was uniform.The general ecological environment quality of Fujian province was good.The ecological environment quality of mountain region in west and north was better,followed by the town,eroded/deforested hill,and coastland.