Study about constructing biological integrated biotic index of( B-IBI) is a hot topic in the river health assessment and river restoration management. Macroinvertebrates communities were sampled at 23 sampling sites of Yongding River Basin in the April,2017.For the study purpose of constructing the B-IBI in the Yongding River,the other extra 5 sampling sites were selected as reference sites in the Chaobai River based on the water quality and habitat quality,where presented the minimum human disturbances and...