Contribution of Rural and Agricultural Sources to Aquatic Phosphor Load in South of Yangzong River Basin

The phosphorus pollution load of plantings under different land use types, sewage and livestock industry in South of Yangzong River Basin were calculated based on remote sensing interpretation and field monitoring. The results showed that the total load of phosphorus pollution in the watershed was 34.53 t, livestock and rural life were the main source of phosphorus pollution in south of Yangzong River Basin, where livestock emissions was the maximum, 22.32 t, accounting for 65% of phosphorus pollution load in the entire basin. phosphorus pollution load of rural life was mainly in the new village street, TP emissions was 8.62 t, accounting for 25% of the phosphorus pollution load in the entire river basin. The TP emissions of farming were minimal, mainly from the paddy fields, accounting for 10% of the total load. Therefore, for the pollution control of phosphorus output in South of Yangzong River Basin, we need to consider the farming and rural life in phosphorus emissions, especially the livestock pollution which regarded as the focus of the study, and to develop appropriate control measures.