中文摘要：

对杭州西溪湿地5种植物群落土壤有机碳、碳密度、碳储量、氮和磷的分布进行了研究.结果表明：西溪湿地早竹林土壤有机碳的水平含量最高；全氮、全磷的垂直分布与有机碳的垂直分布基本一致，速效养分的垂直分布与全量养分的垂直分布类似；C/N值表明除了早竹林外各群落有机质腐殖化程度都较高，而且有机氮更容易矿化；相关分析表明，麦冬和杂草群落土壤中氮素的主要存在形态是硝态氮，柿树林土壤中氮素的主要存在形态是铵态氮，而各个群落土壤中的磷不是以无机磷为主要形态存在.

英文摘要：

The present study was set to investigate the distribution of organic carbon and carbon density,carbon storage as well as the profile of nitrogen and phosphorus in soils of five distinct phytocoenosis nestling in Hangzhou Xixi wetland.The results demonstrate the content of soil organic carbon in Phyllostachys praecox yard is the highest,the vertical distribution of total nitrogen and phosphorus is in general line with that of organic carbon,the case is also true for rapid nutrient and total nutrients.C/N data show that the organic matter humification is relatively high except that of Phyllostachys praecox yard,and organic nitrogen is more subject to mineralization.The relative analysis unraveled that the preponderant existing forms of nitrogen is nitrate-N in soils of dwarf lilyturf and weed community,which is ammonium-N in persimmon wood soil,while inorganic phosphorus is not the major species in varying community soil phosphorus.