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。
The main objective of the present study is to investigate the concentrations and distribution of heavy metals in sediments and benthic organisms (aquatic oligochaetes) from sewage .
本文报道了广州市河涌沉积物及底栖生物的重金属含量及分布状况。
The main objective of the present study is to investigate the concentrations and distribution of heavy metals in sediments and benthic organisms (aquatic oligochaetes) from sewage .
本文报道了广州市河涌沉积物及底栖生物的重金属含量及分布状况。
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