山东省化肥流失状况及其对水环境污染的影响

Chemical Fertilizer Outflow and Its Influence on Water Environmental Pollution in Shandong Province

重点分析了山东省化肥施用量和施用强度的时空变化趋势,以及氮磷污染物向水环境的流失量和发展变化趋势;并以畜禽养殖和农业生活污染及点源污染作为参比对象,比较分析化肥流失污染对水体富营养化的贡献率.结果表明:①半岛东部的沿海地区是山东省化肥施用强度高的地市;②以畜禽养殖和农业生活污染作为参比对象,化肥流失造成的NH3-N,TN和TP污染均居首位,是最重要的农业面源;③与点源污染相比较,化肥流失对NH3-N污染的贡献率已接近40%,逐渐成为水体富营养化的主要污染源.

The changing trend with time and space of chemical fertilizer＇s amount and intensity mount and development trend of N/P pollutants flowing into water were analyazed, furthmore, , the loss ataking point pollution and the pollution caused by agricultural life or raising poultry as the comparative object, contribution rate to water eutrophication from the chemical fertilizer＇s loss the coasting areas in the east of Shandong Peninsula are high pollution was discussed. The result shows that：① chemical fertilizer＇s intensity;②taking the pollution caused by agricultural life or raising poultry as the comparative object, the pollution caused by chemical fertilizer loss such as NH3-N ,TN and TP is most seriously , which is the most important agricultural non-point source pollution;③compared with point pollution, the contribution rate of NH3-N pollution almost arrives at 40% because of chemical fertilizer loss, which is going to be the main pollution source of water eutrophication.