常绿阔叶林演替系列中主要优势种叶片结构的比较

Comparison of structure of leaves of main Dominant Species in Seiral of Evergreen Broad-Leaved Forest

比较研究了三个优势种在常绿阔叶林演替系列群落中的形态特征和生态解剖结构的变化．结果表明，随着群落演替的进展，马尾松针叶的结构特征呈明显地衰退趋势，木荷叶片的耐荫性进一步加强，表现出较强的生态适应能力，栲树在常绿阔叶林顶极群落中解剖结构特征虽在一定程度上表现出阴生性，但高度发达的叶肉组织显示出了较大的光合作用潜力．此项研究揭示了优势种叶片结构与其生境的统一性，有助于解释随着群落演替的进展其生态功能的变化．

In this paper,the changes of morphological characterics and ecological anatomic structure of leaves of three main dominant species,such as Pinus massoniana,Schima superba,Castanopsis fargesii are compared.The results show that along with the communities succession,the ecological anatomic structure of conifer of Pinus massoniana tend to decline,the shade tolorance of leaves of Schima superba is much better with stronger ecological adapting ability,every item of Castanopsis fargesii is characterized by shade-blade to some content,but the developped mesophyll presents bigger photosynthesis potentiality in climax of evergreen broad-leaved forest.This study reveals the unity between leave structure and its biotope,and explains their changes of ecological function along with the communities succession,and supply the new visible index for the community management in practice as well.