Estimation of the Agricultural Non-Point Source Pollution Loads of Eastern Dongting Lake Region

The scale agriculture noodles source pollution has become one of the important factors of influencing eastern river valley water in Dongting Lake environment quality.By use of viable method to carry on to estimate non-point source pollution of the eastern Dongting Lake region,farmland-life-livestock farming and marine products farming were computed respectively to the pollution load.The related calculation result expresses that the TN,TP and COD of livestock farming pollution load were 63.1%,82.2% and 62.5% respectively.Secondly is living pollution load.From now on,in Eastern Dongting Lake district,livestock farming industry and life's polluting will become key elements to control non-point source pollution.And agriculture environmental protection policy should be perfected.