Abstract
The non-point source pollution is serious in the Zhouhe River Basin. There is a large amount of nitrogen and phosphorus load running into the Yuqiao Reservoir, which causes the water eutrophication and even algal blooms. Experience estimate method was taken to calculate the pollutants generation, loss and discharge into rivers based on the economic statistics in the year 2012 of each town. A total of 5887.3 ton COD, 526.5 ton NH3-N, 1665.8 ton TN and 463.1 ton TP is discharged into rivers in the river basin. The pollutant contribution rates of different sources in different polluting process were also analyzed and it suggests that the live stocking is the main pollution source.
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