Evaluation on quality of water resources in Yangtze River Basin

The evaluation of water resources quality is a part of the investigation and evaluation of water resources,which is also an important content of the comprehensive plan of water resources in Yangtze River Basin.Through analysis on monitoring data of 1 553 water quality monitoring stations in Yangtze River Basin,the quality of water resources is evaluated from the aspects of hydrochemistry characteristics,current water quality of rivers,lakes and reservoirs,nutrition status of lakes and reservoirs,qualification of water function areas and the quality and pollution of groundwater.The results show that the quality of surface water in Yangtze River Basin is fine in general,while the quality of water resources in partial areas is worsening;the quality of groundwater is poor with serious pollution.