广西兴安苗儿山保护区铁杉与阔叶树混交林的主要类型及其合理利用的方向

THE MAIN TYPES OF MIXED TSUGA AND BROADLEAF FORESTS AND THEIR ORIENTATION OF RATIONAL UTILIZATION IN THE MIAOERSHAN RESERVE OF XINGAN COUNTY, GUANGXI

铁杉特别是南方铁杉是苗儿山保护区的明显标志。本文着重介绍铁杉与阔叶树混交林的主要类型,指出它们主要分布在分水岭区域,林木生长密茂,植物种类繁多,涵养水源能力强,应加强保护,发挥其涵养水源和植物资源库的作用。林中有许多珍贵、速生树种,可选为周围山地造林树种,广泛栽培。

Tsuga, especially Tsuga tchckiangensis is obvious symbol of the Mia-oershan reserve. Main types of mixed Tsuga and broadleaf forests are discribed in this paper. There are two formations and three associations: 1. Tsuga cune-iformis formation including two association, namely: (1) Tsuga tchkiangensis+ Cyclobalanopsis stewardiana - Illicium majus - Sinarundinaria nitida - Ophiopogon umbricola - Sphagnum fallax + Sphagnum palustre Association, (2) Tsuga tchcki-angensis+Cleyera pachyphylla-Rhododendron haofui-Sinarundirnaria nitida-Ophiopogon bockianus Associaion; 2. Tsuga longibracteata formation only having one association, namely: (3) Tsuga longibracteata + Schima argentea-Cyclobalanopsis gracilis-Sinarund inaria nitida-Carex cruciata Association. At present, the area of such forest is not large, mainly occurring on the watershed region. It must strengthen the protection in order to play its role of conserving water supplies and of gene cool. Many kinds of trees in the forest, for example, Tsuga longibracteata, Schima argentea, Michelia platypetala, Manglictia tenuipes Lithocarpus cleistoca-rpa etc, are worth mentioning.