迭部林区森林植物特性研究(二)

Studies on the Special Characteristics of Forest Vegetation in Diebu County(Ⅱ)

前文已报道[11]迭部林区天然分布木本植物的组成情况,本区计有298种,1亚种,27变种,隶属于119属,58科。本文试对该区所产木本植物区系成分进行分析,表明该区森林植物区系成分复杂,以温带成分占优势,过渡性明显,植被起源古老,发育年轻,与青藏高原植物区系同源,并受华北植物区系、华中植物区系及秦岭植物区系的深刻影响。

Woody plants naturally distributing over Diebu county consti- tute 298 species, 1 subspecies, 27 varieties and belong to 119 genera, 58 families. In this paper, the floral elements of some principal families, all the genera and all the species (including subspecies and varieties) have been tentatively analysed. The results indicated that the forest plan- ts in this region composed of numerous floral elements, among which tem- perate type occupied a dominant position, with obvious transitional nature, and ancient-originated but late-developed characteristics. This forest vegetation was homogenetic as Qinghai-Tibet plateau flora, but strongly influenced by some other flora of North China, Central China and Qingling Mountains and so on.