[Objective] The thesis aims to provide scientific guidance for the conservation of ground vegetation

the protection of the island ecological environment

and its planned exploitation. Herein

the statistical relationships among soil physical and chemical factors on Nanchangshan Island

and their spatial distributions were researched.[Methods] Taking Nanchangshan Island as research area

we adopted quadrat method to investigate the statues of soil and vegetation and relevant indexes were calculated. Afterwards

these indexes would be studied in normal distribution test

correlation analysis

variance analysis and multiple comparisons based on SPSS.[Results] Most of soil samples belonged to grade four and was slightly acidic. The changes of soil bulk density and soil moisture content had obvious effects on available potassium. The trees and shrubs grew better on the top of the slope

where the contents of organic matter and available potassium were higher. Trees on the shady

semi-shady slope grew better and the nutrients in the soil were also higher.[Conclusion] Many factors can influence the spatial distribution of physical and chemical factors of soil on Nanchangshan Island

among which topography and vegetation are the dominant ones. The top and the middle of slope are mainly influenced by terrain and vegetative cover. The bottom of slope is mainly influenced by human activities. Regions with well-developed soil usually have something in common

such as better trees standing

gentle gradient and shady location.