沈阳市春季降尘中氮磷钾及有机碳含量研究

对2005年春季沈阳市大气降尘样品进行了氮磷钾及有机碳含量的分析,同时与其附近城市土壤及沈阳市周边大田土壤中含量进行了比较.结果表明:大气降尘携带了大量氮磷钾及有机碳等养分元素.沈阳市春季降尘氮磷钾及有机碳含量都高于大田土壤含量.同时与附近城市土壤相比,全氮含量略高于城市土壤,全钾含量比附近城市土壤含量低.全磷含量和有机碳含量变化较大,有些观测点高于附近城市土壤,有些却低于附近城市土壤.说明降尘中磷和有机碳的来源比较复杂.

Studies of the Contents of N, P and K and Organic C in Dustfall in Spring in Shenyang City

The contents of N,P and K and organic C in dustfall in Shenyang atmosphere in Spring in 2005 were analyzed and compared with the contents of the soil from nearby cities and the soil from suburb field.The results show that the dustfall can carry lots of nutritious elements as N,P and K and organic C.The contents of N,P and K and organic C in dustfall in Shenyang atmosphere were higher than that in the soil from suburb field.The contents of whole N in dustfall were little higher than that in soil from nearby cities.The contents of whole K in dustfall were lower than that in the soil from nearby cities.The varieties of the contents of whole P and organic C were greater.These contents from the observation spots were sometimes higher or sometime lower than that in the soil from nearby cities,showing that the origins of P and organic C in dustfall were very complex.