【摘要】 对甘肃天水南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1440m处的苔藓植物种类最多,物种丰富度也最高,它与海拔1340m处的苔藓植物的相似性系数也最高;海拔1440m和海拔1520m之间的β多样性最大,这一区段的苔藓植物的物种变化速率最快,种类更替最明显;海拔1440m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。更多还原

【Abstract】 An investigation was made on the bryophytes at different altitudes of Nan Mountain with the composition,similarity,and α-diversity and β-diversity.The result showed that the bryophytes had the highest species number and richness at altitude 1440m,and the highest similarity with the bryophytes at 1340m.The β diversity index was the largest at altitude 1400-1520m means that there is an obvious change and alternation of bryophytes species.At altitude 1440m,the species diversity of bryophytes was the highest,where should be the key area for bryophytes diversity conservation in Nan Mountain of Tianshui City.更多还原