Study of Agricultural Non-point Source Pollution of Fujiang Basin Based on Export Coefficient Model

摘要

@@ 1. Background Non-point source (NPS) pollution has become an important issue for aquatic environments and has therefore received increased attention in recent decades. NPS inputs, especially from agricultural activity, have resulted in large amounts of nitrogen, phosphorus and so on being input into aquatic environments, which cause a wide range of problems such as toxic algal blooms, oxygen depletion and loss of biodiversity. In addition, nutrient enrichment seriously degrades aquatic ecosystems and decreases the quality of water used for drinking, industry, agriculture, recreation, and other purposes.