浙江西天目山苔藓植物物种多样性的研究

对浙江西天目山不同海拔苔藓植物进行调查，从种类组成、相似性、α多样性和β多样性等方面进行了苔藓植物物种多样性分析.结果表明，海拔1 100 m处落叶阔叶林下的苔藓植物种类最多，物种丰富度最高；它与海拔1 300 m落叶矮林下苔藓植物的相似性系数也最高；而海拔800～1 100 m之间的β多样性最大，这一区段苔藓植物的物种变化速率最快，种类更替最明显.西天目山海拔1 100 m处苔藓植物物种多样性最高，是该山体苔藓植物多样性保护的关键区段.

Species diversity of bryophytes in West Tianmu Mountain of Zhejiang Province

In this paper, an investigation was made on the bryophytes at different altitudes of West Tianmu Mountain, with their species composition, similarity, and alpha- and beta-diversities. The results showed that at altitude 1100 m, the bryophytes under deciduous broad-leaved forest had the highest species number and richness, and the highest similarity with the bryophytes under deciduous broad-leaved shrub at 1300 m. The beta diversity index at altitude 800-1100 m was the largest, suggesting an obvious change and alternation of bryophyte species there. At altitude 1100 m, the species diversity of bryophytes was the highest, where should be the key area for bryophyte diversity conservation in West Tianmu Mountain.