The main driving factors of river ecological environment were analyzed to reveal the response mechanism of river ecosystem to ecological environmental factors. The results showed that the driving factors of river water quality were resistivity, COD and reoxidation potential, the driving factors of soil environment along river banks were total phosphorus, total nitrogen and pH, and the driving factors of plant nutrition along river banks were total potassium and total nitrogen. The contribution rates of water quality, soil and plant to river ecological environment health were 43, 51 and 70%, respectively. The comprehensive ecological environment of Menghuo River, Gongyihai, Arulendi River, Yiniu River, Dahonggou River and Nanya River is superior to each other, with the comprehensive proximity index of 0.6258, 0.5908, 0.5524, 0.5265, 0.5195 and 0.3889, respectively. Each detection index can accurately and truly invert the ecological environment health status of rivers in the protected areas.
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