Study on C, N, P Content in Leaf of Evergreen and Deciduous Trees in Evergreen Broad-leaved Forest at E'mei Mountain

Study was made on C,N,P content in leaf of evergreen and deciduous trees in evergreen broad-leaved forest at E’mei Mountain,Sichuan province and relationship among them.The result showed that mean content of C,N,P in evergreen species was respectively 42.30%,1.46% and 0.10%,while that in deciduous one was 41.078%,1.59% and 0.12%.N content in the tested forest leaves had close relation with P content,while no evident relation between C and N,C and P.The average N and P ratio in leaf from evergreen species was 14.48 and 13.61 from deciduous ones,indicating low adaptive faculty to local ecological environment.