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林业科学 ›› 2013, Vol. 49 ›› Issue (4): 16-23.doi: 10.11707/j.1001-7488.20130403

• 论文 • 上一篇    下一篇

海南尖峰岭热带林乔灌木层物种多样性沿海拔梯度分布格局

吴裕鹏1,2, 许涵2, 李意德2, 骆土寿2, 陈德祥2, 林明献2   

  1. 1. 林木遗传育种国家重点实验室 中国林业科学研究院 北京 100091;2. 中国林业科学研究院热带林业研究所 广州 510520
  • 收稿日期:2012-03-06 修回日期:2013-02-26 出版日期:2013-04-25 发布日期:2013-04-25
  • 通讯作者: 李意德

Elevation Patterns of Tree and Shrub Species Diversity of Tropical Forests in Jianfengling, Hainan Island

Wu Yupeng1,2, Xu Han2, Li Yide2, Luo Tushou2, Chen Dexiang2, Lin Mingxian2   

  1. 1. State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry Beijing 100091;2. Research Institute of Tropical Forestry, Chinese Academy of Forestry Guangzhou 510520
  • Received:2012-03-06 Revised:2013-02-26 Online:2013-04-25 Published:2013-04-25

摘要: 沿海南尖峰岭林区海拔梯度设立164块25 m×25 m样地, 分析乔灌木层物种多样性沿海拔梯度的变化规律, 同时分析森林采伐对这种分布格局的影响。结果表明: 尖峰岭物种丰富, 164块625 m2样地共记录植株65 144个, 分属84科253属596种; 原始林的物种丰富度沿海拔梯度呈现双峰型的分布格局, 主要受尖峰岭地区水热、光照、群落特性等因素控制; 径级择伐后森林物种丰富度沿海拔梯度波动上升; 皆伐后森林物种丰富度随着海拔梯度剧烈波动; 原始林的Simpson物种多样性指数随海拔增高而缓慢上升; 径级择伐森林Simpson物种多样性指数首先随海拔增高而平缓上升, 海拔800 m处最高, 之后缓慢下降; 皆伐林中Simpson物种多样性指数随海拔增高先上升, 海拔680 m处达到一个峰值, 然后下降, 海拔850 m处又开始继续上升; 和原始林相比较, 径级择伐森林总体而言沿海拔梯度的Simpson物种多样性指数有所上升, 而皆伐森林的Simpson物种多样性指数有所下降。

关键词: 物种多样性, 海拔梯度, 径级择伐, 皆伐, 尖峰岭

Abstract: The relationship between the diversity of tree and shrub species and the altitudinal gradient of Jianfengling was analyzed based on 164 25 m×25 m quadrats. We also analyzed the impacts of forest logging on the altitudinal patterns of tree and shrub species. Results showed that Jianfengling had abundant plant species. There were 65 144 individuals and 596 species in the 164 quadrats, which belong to 84 families and 253 genera. In the primary forests, the distribution of species richness along the altitudinal gradient showed a bimodal pattern, which was mainly controlled by the water, heat, light and community characteristics in Jianfengling. Species richness had an undulate increase along the altitudinal gradient in the diameter-limit logged forests but changed dramatically in the clear-cut forests. On the other hand, in the primary forests, Simpson species diversity index increased gradually along the altitudinal gradient. In the diameter-limit logged forests, it maintained a slow increase, but had a decline trend after 800 m. In clear-cut forests, it increased gradually along the elevation before 680 m and then declined until it rose again at 850 m. Furthermore, Simpson species diversity index increased after diameter-limit logging and decreased after clear-cutting by comparing with the primary forests along the altitudinal gradient.

Key words: species diversity, altitudinal gradient, diameter-limit logging, clear-cutting, Jianfengling

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