不同海拔高度的高寒草甸植物群落多样性的研究

Study on Diversity of Plant Community in Alpine-cold Meadow at Different Altitude

具有江河源头的青海,位于青藏高原的东部,地形复杂,群落类型众多。对生物多样性的研究和保护是一项重要的任务。本文对互助县松多乡高寒草甸植物群落多样性进行调查,着重分析了高山蒿草草甸植物群落的丰富度、生态优势度、多样性指数和相对多度与海拔的关系。结果表明:随着海拔梯度的逐渐升高,其生态优势度逐渐减小,多样性指数和均匀度在增加,丰富度先增加后减小。

The diversity of plant community in alpine-cold meadow in Songduo country of Huzhu county was investigated and the relationship of the species richness, the ecological dominant index, the diversity, index and the relative abundance in plant community of alpine meadow of Kobresia pygmaea with altitude was mainly and ysed. The results showed that the ecological dominant index was decreased with increasing altitude. The diversity index and the evenness were increased with increasing altitude. The spcies richness was firstly increased and then decreased.