摘要
Two transects (Transect I,Transect II) were selected in areas with Spartina alterniflora,and native vegetation,respectively,for investigation of both distribution and mineralization of soil organic matter (SOM) in the Chongmingdongtan salt marsh of the Yangtze Estuary,China.The results show that spartina alterniflora has produced marked impacts on both content and composition of SOM in the high tidal flat,and discernable impacts on composition of SOM in the middle tidal flat.Native vegetation has exerted marked influence on composition of SOM in the high tidal flat.Salt marsh vegetations have therefore made remarkable impacts on distribution and mineralization of SOM.