In this paper, naturalness, representativeness, diversity, rarity, suitability, ecological fragility and the threat of human interference were chosen to evaluate the ecological quality of Sanjiang nature reserve. Through gradation division for these indices based on the method of AHP, the weights of these indices were confirmed. Combined with the evaluation results of single index, the composite evaluation index (CEI) of the reserve was calculated (CEI = 0.7891). The result showed that the ecological quality of the reserve is relatively good. In addition, this paper analyzed the current problems that existed in the reserve and put forward some corresponding proposals.
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