广西阳朔石灰岩山地乌岗栎林的主要类型及其合理利用的方向

乌冈栎(Quercus phillyraeoides)是广泛分布在地中海区域的冬青栎(Quercus ilex)在东亚的一个代替种^6]。对于它在阳朔的分布生境和构成小片森林的群落学特点与在植被分类的位置,我们曾作过专门的论述^3]。

MAIN TYPES OF QUERCUS PHILLYRAOEIDES FOREST IN LIMESTONE HILLS OF YANGSHUO DISTRICT.GUANGXI AND ITS WAY OF RATIONAL UTILIZATION

Main types of Quercus phillyracoides forest growing on lime-stone hills of Yangshuo district, Guangxi are described in this paper. There are two frequent community types:(1) pure fo-rest of Quercus phillyraeoides, (2) mixed forest of Quercus phil-lyraeoides and Canthium dicoccum. As compared with other sclerophyllus evergreen broadleaf forests of the world, Quercus phillyraeoides forest here is sligh-tly similar to them in the physiognomy and structure of com-munity. There is a great difference between them in the flo-ristic composition, but having resemblance to the Quercus Phil-lyraeoides stands along the coastal hills of the Pacific-facing coasts in Japan. Because both Eastern China and Japan are belonging to the same floristic region. The formation and de-velopment of Quercus phillyraeoides forests have many similari-ties between the two places. Quercus phillyraecides forest distributing in Yangshuo dis-trict is one of the surviving ancient community, therefore we must protect it intensively. The charcoal produced from the timber of this tree is of very high quality and used domesti-cally as fuel. So it may be used as afforested species of fire-wood in limestone hills of northeastern part of Guangxi.