In this paper the accumulation and biological cycle of N and P elements of Rhizophora styloxa community in Yinluo Bay Guangxi.have been studied.It is measured that the amounts of N and P in the standing crop of this community were 221. 15g/m2 and 13. 27g/m2,of which the amounts of the two elements in biomass above ground were N 134. 90g/m2 and P 8. 73g/m2 and in the biomass under ground were N: 86. 25g/m2 and P 4. 54g/m2 .respectively.In the biological cycle of N and P of this, stand, the annual uptake was ...