Taking Qinghe river which is a tributary of the Liaohe River basin for example,according to the water quality standards achieved by every section of the water body,the paper redefined the water quality objectives of every segment.Using one-dimensional water quality model,the water environmental capacity of CODCr and NH4-N were 2012 and 46 t/a in dry season,4111 and 80 t/a in wet season.Finally,according to the pollution loads status of the point source and non-point source in the study area,the amount range...