...动物完整性指数：鱼类等水生动物种类及数量的变化能够反映整个水生态系统的健康状况，生物完整性指数(Index of Biotic Integrity, IBI)是当前广泛使用的河流健康状况评价方法.
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基于前人大量的研究，系统总结了生物完整性指数和水文地貌评价法的概念、评价步骤和各自特点。
Based on previous mass researches, the concepts, evaluation steps and respective characteristics of biological integrity index and hydro-geomorphology evaluation method were summarized systematically.
应用和验证了国外新提出的生物系数（BC）和底栖生物完整性指数（B-IBI），对其局限性和可行性进行了分析。
Two biotic indices, Biotic Coefficient (BC) and Benthic Index of Biological Integrity (B-IBI), recently suggested by European and American scientists were applied and commented on this study.
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