植物生态学报 ›› 2016, Vol. 40 ›› Issue (9): 861-870.DOI: 10.17521/cjpe.2015.0400

• 研究论文 •    下一篇

海南尖峰岭热带山地雨林物种多样性空间分布格局的尺度效应

李艳朋1, 许涵1,*(), 李意德1, 骆土寿1, 陈德祥1, 周璋1, 林明献2, 杨怀2   

  1. 1中国林业科学研究院热带林业研究所, 广州 510520
    2中国林业科学研究院热带林业研究所试验站, 海南乐东 572542
  • 收稿日期:2015-11-10 接受日期:2016-07-23 出版日期:2016-09-10 发布日期:2016-09-29
  • 通讯作者: 许涵
  • 基金资助:
    国家自然科学基金(41201192)、中央级公益性科研院所基本科研业务费专项(CAFYBB- 2011004、RITFYWZX201204、RITFYWZX200902)、国家林业局林业公益性行业科研专项(201104057)

Scale-dependent spatial patterns of species diversity in the tropical montane rain forest in Jianfengling, Hainan Island, China

Yan-Peng LI1, Han XU1,*(), Yi-De LI1, Tu-Shou LUO1, De-Xiang CHEN1, Zhang ZHOU1, Ming-Xian LIN2, Huai YANG2   

  1. 1Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou 510520, China
    and
    2Experimental Station of Research Institute of Tropical Forestry, Chinese Academy of Forestry, Ledong, Hainan 572542, China
  • Received:2015-11-10 Accepted:2016-07-23 Online:2016-09-10 Published:2016-09-29
  • Contact: Han XU

摘要:

物种多样性的空间分布格局和维持机制是群落生态学的基本问题。为了探讨海南尖峰岭地区物种多样性空间分布格局的尺度效应, 以海南尖峰岭热带山地雨林60 hm2样地为研究对象, 分析了物种丰富度、物种多度、Shannon-Wiener指数、Simpson指数以及Pielou均匀度指数随6个空间取样尺度(5 m × 5 m、10 m × 10 m、20 m × 20 m、40 m × 40 m、100 m ×100 m、200 m × 200 m)的变化。结果表明: 相比Simpson指数和Pielou均匀度指数, 物种丰富度、多度以及Shannon-Wiener指数具有更为明显的空间尺度效应; 物种丰富度的方差随取样尺度增加呈现单峰分布特征, 并且在20 m × 20 m尺度上达到最大值, 而物种多度的方差随取样尺度的增加而增大; 物种丰富度和多度的正相关性随着取样尺度的增加逐渐减小甚至消失, 这可能与随取样尺度增加生境异质性增加有关; 取样尺度对3个物种多样性指数空间分布的影响可能与研究区域内稀有种的组成有关。

关键词: 海南, 尖峰岭, 热带山地雨林, 物种多样性, 取样尺度, 空间分布格局

Abstract:

Aims Spatial distribution patterns and formation mechanisms of species diversity are fundamental issues in community ecology. The objectives of this study are to assess the species diversity patterns at the different spatial scales in Jianfengling, Hainan Island, China.
Methods Based on the dataset from the 60 hm2 plot in the tropical montane rain forest in Jianfengling, Hainan Island, the spatial distribution patterns of species richness, species abundance, Shannon-Wiener, Simpson and Pielou’s evenness indices were analyzed at six spatial scales, including 5 m × 5 m, 10 m × 10 m, 20 m × 20 m, 40 m × 40 m, 100 m × 100 m, and 200 m × 200 m, respectively.Important findings
Results showed that spatial distribution patterns of species richness, species abundance and Shannon-Wiener index were much more obviously changed with the spatial scales than Simpson and Pielou’s evenness indices. Change of variance of the species richness with the increase of spatial scales was unimodal, which had the maximum value at the 20 m × 20 m scale. Variance of the species abundance showed a linear relationship with the increase of spatial scales. The positive relationship between species richness and abundance gradually decreased and even disappeared with the increase of sampling scales, which may be correlated with the increase of habitat heterogeneity. The effects of spatial scales on Shannon-Wiener, Simpson, and Pielou’s evenness indices may be also correlated with the composition of rare species in the plot.

Key words: Hainan, Jianfengling, tropical montane rain forest, species diversity, sampling scale, spatial distribution patterns