闽北建溪流域常绿阔叶林的群落分析

本文讨论了地处福建省北部包括蒲城等六县的建溪流域常绿阔叶林的群落区系成分、外貌、结构、主要种类的综合特征和群落演替趋势等特点。据统计49块样地共10,600平方米面积的群落种类组成中,含维管植物216种,分属于64科123属;其中单种与寡种属分别占总数的66.7%与27.6%。植物区系以包括泛热带、热带分布的成分占优势,分别达科、属总数的45.3%与53.3%。全流域区树种以栲树、苦槠、甜槠与木荷为主。基于对群落区系成分、外貌与树种年龄结构等分析表明,该区群落是从中亚热带南部亚地带到北亚热带常绿阔叶林过渡的类型。

COMMUNITY ANALYSIS OF EVERGREEN BROAD-LEAF FOREST IN JIANXI RIVER BASIN OF NORTHERN FUJIAN

This paper deals with the characteristics of floristic composition,phy- siognomy,structure,synthetical features of chief species and community succession of the evergreen broad-leaf forests in Jianxi River Basin of northern Fujian. According to the surveys of 10,600M~2 in 49 plots,there are 216 species of vascular plants belonging to 123 genera and 64 families,in which single genus and minor genus made up 66.7% and 27.6% of total number of genera respectively.Analysis of floristic geographical elements indicate that the per- centage of tropical and pan-tropical are dominant,making up 45.3% and 53.3% of the total numbers of families and genera respectively.The domin- ants of formations irt this river basin are chiefly Castanopsis fctrgesii,C. sclerophylla,C.eyrei and Schima superba,etc.The analysis of floristic composition,physiognomy and age structure of these forests indicate that the communities are the transition types from southern mid-subtropical to north-subtropical evergreen broad-leaf forests.