Investigation and Analysis of Agricultural Non-point Source Pollution in Handan City
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Abstract:
Agricultural non-point source pollution includes three aspects: non-point source pollution of pollutants caused by rainfall runoff washing the urban ground surface，non-point source pollution of unreasonable usage of fertilizers and pesticides，and agricultural solid waste pollution and water loss and soil erosion pollution caused by rainfall runoff. In this paper, the agricultural non-point source pollution was investigated based on the data of year 2005 in Handan city. The results indicated that the fertilizer loss, as the main source of agricultural non-point source pollution, accounted for 90.91% of total agricultural pollutants. Among the four pollutants of total phosphorus, total nitrogen, ammonia nitrogen, and COD, total nitrogen and total phosphorus accounted for 63.58% and 27.22% of the total amount of pollutants, respectively. The results can provide scientific basis for remediation of non-point source pollution.
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