Abstract:In order to understand the effect of vegetation types on soil physicochemical property in Island, the soil physicochemical property in East Island and Yongxing Island of Xisha Islands under three vegetation types were determined. The results showed that in the processes of vegetation types from herbaceous and vines, shrubs to trees community, the soil water content increased significantly from 5.9% to 14.15%, and microbial biomass carbon and nitrogen also increased from 176.2 and 41.2 mg kg-1 to 391.5 and 98.8 mg kg-1, respectively. Meanwhile, the soil pH decreased with changes in vegetation types. So, it was suggested that soil quality in Islands enhanced gradually with vegetation recovery, and the island ecosystem became more stable.