广西细叶云南松林的群落学特点

细叶云南松广泛分布在南盘江下游两岸海拔300-1600m的丘陵山地,常常构成大面积的森林,群落类型多种多样。本文对其群落外貌、结构、种类组成和演替等作了比较详细的分析,说明它是一种演替系到群落,变化是比较明显而迅速的。如果要持续利用,就必需采取适当措施,促其更新并恢复成林;如果要让常绿阔叶林发展,就应该加强保护目的树种,并使其逐步地取而代之。这两种类型的森林,在这个区域都是需要的。

THE PHYTOCOENOLOGICAL FEATURES OF PINUS YUNNANENSIS VAR. TENUIFOLIA FOREST IN GUANGXI

Pinus gunnanensis var. tenuifolia is extensively distributed in the hills and mountains with an altitude from 300-1600m. along the lower Nanpan-jiang river. There it constitutes a large area of forest and forms an impo-rtant base of timber production.This paper deals with its phytocoenological features, including community physiognomy, tructure, floristic composition and succession.Analysis of these features indicates that it can be considered as a seral community. It will be necessary to promote reproduction and growth of the trees by use of suitable measures in order to reach sustained utilization.