A Review of the Study on Regional Ecological Environment Evaluation by Remote Sensing
At present,satellite remote sensing earth observation technology is widely used in the field of ecological environment quality evaluation with its advantages of macro,rapid and real-time.This study combs through the development of regional ecological environment quality evaluation at home and abroad,introduces the method of determining the weights of indicators in the evaluation procedure and the selection of ecological environment quality evaluation methods,and extends the discussion on the index method among them.The study shows that the regional ecological environment quality evaluation methods based on remote sensing mainly include fuzzy comprehensive evaluation method,object element analysis evaluation method and index evaluation method,among which the comprehensive index evaluation method is the most widely used.The weights of the index system in the evaluation process are mainly determined by principal component analysis,hierarchical analysis and entropy value method,among which the principal component analysis method is the most objective because it is not affected by human subjective factors.
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