闽西梅花山自然保护区的常绿阔叶林

据对闽西梅花山自然保护区的16处常绿阔叶林样地调查统计,共含维管束植物195种,分属72科125属。植物区系以樟、壳斗、山茶与金缕梅等科的属种为主,热带、泛热带分布地理成分共分别占科、属总数的51.4％与65.6％。全区现状群落有米槠林等10个主要群系且可分3个样地组合。树种以米槠、细柄? 树与甜槠等占优势但已大多老龄化,今群落切需加强保护。

Evergreen Broad-leaf Forests in the Meihuashan Nature Reserve of Westhern Fujian

According to the surveys in 16 plots of the evergreen broad-leaf forest in the Meihuashan nature reserve of Westhern Fujian, there are 195 species of vascular plants belonging to 72 familis and 125 genera. Analyses of floristic geographical elements indicate that the percentage of tropical and pan-tropical elements (such as the genera of Lauraceae, Fagaceae, Theaceae and Hamameli-daceae,etc.) are dominant, making up 51.4% and 65.6% of the total numbers of families and genera respectively. The dominant formations in the nature reserve are chiefly Castanopsis carlesii, Altingia gracilipes, Castanopsis eyrei, C. fordii and C, lamontii, etc. Analysis of the age structure of the trees in the forest showed that they belong to old-age types. Shannon-Wiener's index of species diversity of trees are higher (3.40-3.71),and the physiognomy of the communities was analyzed on the basis of the life forms of the plants and their leaf characters, which showed this forest in the Meihuashan nature reserve is a type from south-subtropical rain forest to mid-subtropical evergreen broad-leaf forest.