Actuality Evaluation of Agricultural Non-point Source Pollution in the Zhangweinan Basin-Case Studies in Lucheng City and Xinxiang County

摘要

This study took Lucheng City and Xinxiang County in Zhangweinan Basin as the typical cases to investigate and analyze the potential agricultural non-point source pollution. The potential pollution loads (PPL)of total N of Lucheng City and Xinxiang County are 46,855 t and 50,262 t, respectively; the potential pollution loads of total P are 5,604t and 4,2921, respectively; and the potential pollution loads of COD are 14,868t and 10,862t, respectively. We also analyzed the components and sources of the agricultural non-point source pollution, and calculated the amounts of total N, total P and COd discharged into rivers.