西藏红景天植物的生态分布调查与资源的合理保护

Investigation on Ecological Distribution of Rhodiola L.in Xizang and Its Reasonable Protection

红景天属植物是一类具有重要药用价值的经济植物。根据相关历史资料和对西藏地区红景天属植物的野外调查与记录,已知西藏红景天属植物有36个种2个亚种。作为红景天属植物的现代分布中心,青藏高原上的红景天植物种类多、分布广、蕴藏量大。在生态习性方面,红景天表现为适应性强、喜光照,但只有在具备适宜的小生境时才能生长。适宜的小生境有林下、灌丛边缘、高山草甸和高山流石滩等,阳坡环境更有利于红景天属植物的生长,其种类与数量较多。红景天植物资源较脆弱,合理采挖与保护才有利于可持续利用。

Rhodiola were an important economic plants possess great value.Based on the field investigation data and history materials,36 species and 2 subspecies of Rhodiola in Xizang were found.As one of the modern distribution center of Rhodiola,Qinghai-Xizang Plateau had the richest species of Rhodiola,broaden distribution areas and huge resource amount in Rhodiola.The appropriate niches included forest understory,shrub edges,alpine meadow and alpine sand dune by flood among them.Sunny slope was the abundant slope aspect where Rhodiola grew.Resources of Rhodiola were also vulnerable,so reasonable excavation and protection was beneficial to the sustainable utilizing.