黑龙江省农业非点源污染源解析

Source apportonment of agricultural non-point source pollution in Heilongjiang Province

鉴于目前对宏观尺度上农业非点源污染研究较少的特点,在基于大量统计数据的基础上,针对黑龙江省总体的农业非点源污染进行了相关研究,为制定全省农业非点源污染控制规划提供理论依据。在黑龙江省农业非点源污染中,化学需氧量(COD)的主要污染来源是畜禽养殖,总氮(TN)的主要污染来源是施用化肥。各种污染物排放量均受到农村人口的强烈影响,贡献率较大,农业产值对总氮(TN)和氨氮(NH4+-N)的影响较大,国土面积对总磷(TP)的影响较大。2007年和2008年TN和TP的排放浓度均超过《地表水环境质量标准》(GB3838-2002)中的III类标准污染物浓度。全省因农业非点源污染造成的水质污染综合指数达到污染水平,主要污染为磷污染和氮污染。

As the characteristic of less macroscopy research of agricultural non-point pollution,based on a lot of statistical data,agricultural non-point source pollution and related issues of Heilongjiang Province were researched,provided theories basis for establishing control programming of whole province agricultural not-point source pollution.In agricultural non-point source pollution of Heilongjiang Province,the main pollution source of COD were livestock and poultry,the main pollution source of TN was fertilizer.Emissions of various pollutants is strongly influenced by the rural population,the contribution were larger,the impact of agricultural output value on TN was significant and the impact of land area on the TP was significant.In 2007 and 2008,concentrations of TN and TP exceeded Class III standard of ＂Surface Water Environmental Quality Standard＂（GB3838-2002）.The water quality index reached the level of pollution due to the agricultural non-point source pollution,the major pollution were phosphorus and nitrogen pollution.