Abstract：Aiming at the problem that the index weight is difficult to be determined in many evaluation methods for the river health evaluation， a combined weight based fuzzy evaluation method is applied， and then the evaluation on the river health level is realized. In this method， the subjective weight and the objective weight are combined for determining the index weight， and furthermore， the fuzzy comprehensive evaluation method is applied to assess the river health status; with which the human interference from pure subjective weight is avoided， thus the evaluation result is much more objectivity. By taking 8 river reaches of the Lower Luanhe River in Tangshan District as the calculation cases， the index system and evaluation criterion are constituted and， in turn， the health statuses of the river reaches within the study area are all obtained， which are sub-health towards ill health. Combined with the improved principal component analysis method， the evaluation results from both the methods are basically coincided， and then the rationality of this method is certified as well.
郑志宏，魏明华. 基于组合赋权的河流健康模糊评价研究[J]. Journal of Materials Sciences & Technology, 2013, 44(2): 28-.
ZHENG Zhihong， WEI Minghua. Study on combined weight based fuzzy evaluation of river health[J]. Journal of Materials Sciences & Technology, 2013, 44(2): 28-.