峨眉山常绿阔叶林常绿和落叶物种叶片C、N、P研究

采用常规方法对峨眉山常绿阔叶林的常绿和落叶物种植物C、N、P含量及其之间的相互关系进行了研究,结果表明:①峨眉山常绿阔叶林常绿物种叶片C、N、P平均含量分别为42.30%、1.46%、0.10%;落叶物种叶片C、N、P平均含量分别为41.078%、1.59%和 0.12%.常绿和落叶物种植物叶片N-P成极显著的乘幂关系,而C-N和C-P关系不显著;②峨眉山地区常绿阔叶林常绿物种叶片N/P比平均值为14.48,落叶物种的N/P比平均值为13.61,其对生态环境的适应性较低;③在峨眉山海拔700、1 100和1 500 m处,植物叶片N-P亦成显著的关系,而植物叶片C-N和C-P关系不显著.

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.