【摘要】 本文根据在西藏高原多年考察所收集到的第一手资料,对西藏高原座垫植被生态环境、分布规律以及植被的基本特征和主要组成群系作了概括性的论述。更多还原

【Abstract】 The alpine cushion vegetation is a peculiar type of the alpine vegetation, Which widely distributes in the Qinghai-Xizang plateau,range Tianshan and the Eas- tern Pamir of China,and developes best in Xizang. In this paper,the problem of the correct differentiation of the alpine cushion re- getation are discussed,in addition,Some Characteristics of the environment,distribution and composition of the alpine cushion vegetation in Xizang are analysed and discussed. The authors suggested that the Xizang plateau is an another original center of the alpine cushion vegetation besides the Pamir plateau according as authors had analysed the basic characteristic of the alpine cushion vegetation in Xizang.The following 5 main formations of the cushion vegetation of the Xizang are summarized:Form.And- rosace tapete,Form.Arenaria bryophylla,Form.Arenaria pulvinata,Form.Thylacospe- rmum caespitosum and Form.Chionocharis hookeri.更多还原