浙江西天目山苔藓植物物种多样性的研究

Species diversity of bryophytes in West Tianmu Mountain of Zhejiang Province.

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1i00m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1300m落叶矮林下苔藓植物的相似性系数也最高；而海拔800～1100m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1100m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．

In this paper, an investigation was made on the bryophytes at different altitudes of West Tianmu Mountain, with their species composition, similarity, and a and B-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 1 300 m. The β diversity index at altitude 800 - 1 100 m was the largest, suggesting an obvious change and alternation of bryophyte species there. At altitude 1 100 m, the species diversity of bryophytes was the highest, where should be the key area for bryophyte diversity conservation in West Tianmu Mountain.