HIGHLIGHTS
SUMMARY
With the effectively control on the PS pollution in recent years, the NPS pollution was reported as one of the most important sources threatening the security of water resources, and even contributed to the outbreak of water blooms. At the end of the twentieth century, some developed countries found that the NPS pollution transformed to the primary pollution source in many waters (US. USA has accounted that 60% of water pollution originated from NPS pollution (US,94% of the nitrogen load and 52% of the phosphorus load in 270 Denmark rivers were caused by . . .
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