摘要
利用基于通用土壤流失方程（USLE）的《南京市2001—2010年水土流失面源污染与面源污染定量监测研究》成果，分析南京江宁区水土流失面源污染数据。结果表明：江宁区全氮和总磷面源污染等级为中度，氨氮为轻度面源污染，速效磷、总磷为微度面源污染。10a（2001-2010年）平均值与4a（1997-2000年）平均值比较，轻度以上污染面积、污染量皆大幅减少，氨氮、全氮、速效磷污染面积减少11％-24％，污染量减少21％-32％。4种污染物中，发生轻度污染面积和污染量均占总污染（轻度以上，下同）面积和总污染量的重要比重；中度次之；强度、极强和剧烈污染等级中，面积比重相近，但剧烈等级的污染量比重突出，其中全氮污染量比重达37．4％。
Based on the results of Nanjing non-point source pollution of soil erosion and non-point source pollution quantitative monitoring research during 2001-2010 with USLE, the dynamic changes of non-point pollution caused by soil and water losses in Jiangning region, Nanjing Municipality were analyzed. The results showed that the pollution degree of total nitrogen and total phosphorus in non-point pollution was moderate, the pollution degree of ammonia and nitrogen was light, and the available phosphorus was slight non-point pollution in Jiangning. Comparing the average value between during the decade （2001-2010） and during the four-year data （1997-2000） of non-point pollution, the total area and amount of pollution which higher than the micro-pollution were significantly reduced, the area reduction of ammonia nitrogen, total nitrogen and available phosphorus was 11 % - 24% , and the amount reduction of pollution was 21 % - 32%. Among those four types of pollutants, lightly polluted area accounted for the highest proportion of total polluted area （higher than slightly, the same as below） , and moderate pollution ranked second. The area of degrees of strength, pole-strength and intense pollution were similar to each other. Additionally, the proportion in amount of intense pollution was very serious, especially the proportion of the total nitrogen pollution reached 37.4%.
出处
《林业科技开发》
北大核心
2014年第2期63-67,共5页
China Forestry Science and Technology
基金
国家林业行业专项(编号:201104055)
江苏省科技厅项目(编号:ZMT-1-KT01)
关键词
水土流失
面源污染
污染等级
污染模数
soil and water loss
non-point pollution
the degree of pollution
pollution modulus
