Investigation and Analysis of Agricultural Non-point Source Pollution in Handan City

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.