济源市王屋山地区乔木物种多样性的垂直分布格局

本文主要调查了2019年5—8月太行山猕猴国家级自然保护区天坛山管护区内乔木在700～1 700 m海拔区间的垂直变化趋势。结果表明:在海拔700～1 700 m范围内,共有乔木38种,属于15科23属,其中壳斗科的栎属占据绝对优势;乔木物种数量随海拔变化具有明显的不规律性,但总体趋势维持稳定;乔木在总体海拔区段内多样性指数为H′=1.00±0.39,随海拔的升高呈不规则分布;乔木的整体均匀度指数E=0.57±0.15,在海拔区段内具有多样的变化。乔木物种多样性指数与均匀度指数之间具有显著的正相关关系。

Vertical distribution pattern of diversity of tree species in Wangwushan area, Jiyuan

The vertical distribution pattern of species diversity along the altitude gradient is an important content of biodiversity research. Exploring the vertical changes of species along altitude based on alpha diversity is an important measure of biodiversity. In this study, from May to August 2019, in the Tiantan Mountain, which is located at the Taihang Mountain Macaque National Nature Reserve, the vertical trend of tree species in the range of 700 m to 1700 m altitude was investigated. The results showed that: 1) In the range of 700 m-1700 m above sea level, there were 38 species of trees, belonging to 15 families and 23 genera, among which Quercus of Fagaceae had an absolute advantage; 2) The number of tree species varied significantly with altitude. However, the overall trend remained stable; 3) The diversity index of trees in the overall elevation section was H"=1.00 (±0.39), which was irregularly distributed with the elevation; 4) The overall evenness index of trees was E= 0.57 (±0.15), there were various changes in the section. There was a significant positive correlation between tree species diversity index and evenness index.