干旱区研究

干旱区研究 ›› 2011, Vol. 28 ›› Issue (1): 25-30.

• 中国山地生物多样性 • 上一篇    下一篇

新疆野生维管束植物物种丰富度分布格局的水热解释

李利平1, 努尔巴依·阿布都沙力克2, 王少鹏1, 王志恒1, 唐志尧1   

  1. 1. 北京大学城市与环境学院生态学系 北京大学地表过程分析与模拟教育部重点实验室, 北京 100871;
    2. 新疆大学资源与环境科学学院 绿洲生态教育部重点实验室, 新疆 乌鲁木齐 830046
  • 收稿日期:2010-11-08 修回日期:2010-11-12 出版日期:2011-02-25 发布日期:2011-09-06
  • 通讯作者: 唐志尧.E-mail:zytang@urban.pku.edu.cn
  • 作者简介:李利平(1980-),女,河南孟津人,博士,主要研究方向为植被生态学.E-mail:liliping@pku.edu.cn
  • 基金资助:

    国家重点基础研究发展计划(2010CB950602)项目;国家自然科学基金面上项目(40871030)

Distribution Patterns and Climatic Explanations of Species Richness of Vascular Plants in Xinjiang,China

LI Li-ping1, Nurbay Abdusalih2, WANG Shao-peng1, WANG Zhi-heng1, TANG Zhi-yao1   

  1. 1. Department of Ecology, College of Urban and Environmental Sciences; Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing 100871, China;
    2. College of Resources and Environmental Sciences;Key Laboratory of Oasis Ecology of the Ministry of Education, Xinjiang University, Urumqi 830046, China
  • Received:2010-11-08 Revised:2010-11-12 Online:2011-02-25 Published:2011-09-06

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1384

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被引次数

17

摘要： 新疆地处中国干旱区,地形气候复杂,生境类型丰富多样,为研究极端条件下物种丰富度的分布格局及其成因提供了理想场所。利用新疆维管束植物丰富度数据和对应的气候数据,分析水热因子对新疆维管束植物物种丰富度的影响。结果表明:物种丰富度随年降水量和年实际蒸散量的增加单调递增,随年平均气温和年最大可能蒸散量的增加呈单峰型变化。在盆地和山地,物种丰富度随年降水的增加而显著增加;随着年平均气温的增加,物种丰富度在山地呈现出先增加后减小的单峰格局,在盆地中则仅呈现单调下降的趋势。在不同的水分亏缺水平,物种丰富度与年降水量的关系不一致,随着水分亏缺的增大,物种丰富度随年降水增加的速率减小;随着年平均气温的增加,物种丰富度在较低的水分亏缺时单调递增,在较高的水分亏缺时单调递减。

关键词: 年降水量, 年平均气温, 蒸散量, 水分亏缺, 维管束植物, 物种丰富度, 新疆

Abstract: Distribution patterns of biodiversity at large scale and their affecting factors are one of the focal issues of ecology. Xinjiang is located in an extremely arid area in northwest China, where there are ideal places to explore the distribution patterns of species richness and their affecting factors under extreme conditions because of the complicated topographical and climatic conditions and the diversity of habitats. In this study, the relationships between the distribution patterns of species richness of vascular plants and the climatic factors in Xinjiang are analyzed based on the available data of vascular plants and climatic factors. The results reveal that the species richness increases with the increase of annual precipitation (AP) and actual evapotranspiration (AET), and the curve of species richness of vascular plants with the increase of MAT and PET is unimodal. In all the subregions, species richness increases significantly with AP. Species richness patterns with the increase of MAT are different in the mountains and basins, it increases at first and then decreases with the increase of MAT in mountains, but decreases monotonically in the basins. At different water deficit (WD) levels, the increase rate of species richness is decreased with the increase of AP at high WD. Species richness increases with the increase of MAT at low WD level but decreases at high WD level.

Key words: annual precipitation (AP), mean annual temperature (MAT), potential evapotranspiration (PET), water deficit (WD), vascular plant, species richness, Xinjiang

中图分类号: 

  • Q948.11