期刊论文

Effect of Topography on Plant Species Richness and Distribution in Qizimei Mountains Nature Reserve

中文

西北植物学报

1000-4025

2016

36

11

2307-2313

10.7606/j.issn.1000-4025.2016.11.2307

国家自然科学基金（41471041） 七姊妹山自然保护区管理局保护研究专项

本校为其他机构

该研究以七姊妹山自然保护区40个(20×20 m~2)植物群落调查样方为基础,并采用回归分析和典型对应分析(CCA)的方法研究该区地形对植物物种丰富度及植物分布格局的影响,以明确海拔、坡度、坡向、坡位等地形因子的相对重要性,为该区植物多样性的保护和管理提供理论依据。结果表明:(1)七姊妹山自然保护区40个调查样地共有植物633种,隶属133科,316属,其中乔木118种,灌木150种,草本365种。(2)曲线回归方程拟合结果显示,七姊妹山自然保护区植物物种丰富度分别与海拔、坡度具有显著相关性,物种丰富度沿海拔梯度升高而增大,沿坡度梯度先减少后增大之后又减小。(3)从植物的生活型来看,在所有海拔段,乔木物...

Species richness and distribution are closely related to topography factors (altitude, slope grade, slope aspect, slope position), and study their relationship of Qizimei Mountains Nature Reserve is important to maintain and restore the plant diversity and the management of forest. Phytosociological method was used to investigate plant communities in Qizimei Mountains Nature Reserve. Furthermore, the regression analysis and canonical correspondence analysis were used to study the effect of topography on species richness and distribution pattern...