Spartina alterniflora was introduced into China in 1979,and the first plantation of S.alterniflora was successfully constructed in Jiangsu province in 1982.Since it expanded quickly on coastal wetlands,great attentions were paid to its positive and negative effects on native ecosystems.In order to study the components and structural characteristics of soil organic carbon( SOC) pool of S.alterniflora saltmarsh,field observations and soil sampling work were fulfilled at permanent study sites including mudflat...