he paper deals mainly with the contents, pool amounts and annual dynamics of C,Hand N elements in 20-year-old Kandelia candel mangrove community in Jiulongjiang RiverEstuary of Fujian,China. The results showed that: 1. The C,H and N contents(%dw )in the various fractions of the plant were different.The range of content was:C 43. 81%─5. 22%,N4. 50%─5. 68%and N 0. 23%─1. 80%,withatom ratio C<1> H<1.11─ 48>N<0.004─0.034. 2. In the standing crop of the community, the pool amounts of C,N and N were7457.53g/m￣2,...