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.
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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