酸雨对贵阳城区地表磷淋洗溶出效应研究

Research on the Effects of Acid Rain on Leaching Loss of Phosphorus in Guiyang City

模拟贵阳市2005年酸雨情况,利用土柱淋洗试验,研究贵阳市三个不同区域磷淋失的动态变化特征,为本地区农业合理施肥和水体富营养化防治提供科学依据。研究结果表明,磷淋失与酸雨pH值和降雨量密切相关,酸雨pH值越小,酸性越强,磷淋失量越大;降雨量越大,磷淋失量也越大。

By simulating the situation of acid rain in 2005 of Guiyang city,using the soil column leaching experiment,the dynamic changing characteristics of phosphorus leaching loss in three areas of Guiyang were analyzed,and scientific basis were provided for applying fertilizer rationally in local agriculture and eutrophication control in water bodies.The result showed a close link among the phosphorus leaching out,acid rain pH value and the rainfall.The smaller the acid pH value was,the stronger the acidity and the larger quantity were,and the quantity of the phosphorus leaching out got larger when the rainfall becomes bigger.