生物多样性 ›› 2006, Vol. 14 ›› Issue (1): 21-28.doi: 10.1360/biodiv.050146

• 论文 • 上一篇    下一篇

中国北方典型草地物种丰富度与生产力的关系

马文红*, 方精云   

  1. (北京大学环境学院生态学系, 北京大学生态学研究与教育中心, 北京大学地表过程分析与模拟教育部重点实验室, 北京 100871)
  • 收稿日期:2005-07-01 修回日期:2005-12-21 出版日期:2006-01-20
  • 通讯作者: 马文红

The relationship between species richness and productivity in four typical grasslands of northern China

Wenhong Ma*, Jingyun Fang   

  1. Department of Ecology, College of Environmental Sciences, Center for Ecological Research & Education, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing 100871
  • Received:2005-07-01 Revised:2005-12-21 Online:2006-01-20
  • Contact: Wenhong Ma

利用2002–2004年内蒙古和甘肃南部几种典型草地的实测资料, 研究了不同尺度物种丰富度与生产力的关系, 并初步探讨了其形成机制。结果显示, 温带草地的物种丰富度随生产力的增加而增加, 但受空间尺度影响。在群落尺度(同一群落), 在7种样方数大于15的群落中, 仅沙生针茅(Stipa glareosa)群落物种丰富度与生产力呈现单峰型关系, 其余均呈现线性正相关关系; 在植被类型尺度, 物种丰富度–生产力之间表现为显著的正相关关系; 在研究区尺度, 物种丰富度随生产力的增加而显著增加。研究还表明, 研究区群落生产力的变化范围为13–368 g·m–2·yr–1, 物种丰富度为4–35 种; 生产力从高到低的顺序为: 高寒草甸>草甸草原>典型草原>荒漠草原。

The relationship between plant species diversity and primary productivity has long been a hot topic in biodiversity research. We examined the relationship between species richness and productivity in four typical grasslands of northern China at different spatial scales. At the community scale, a positive correlation was found for six of seven communities, and a unimodal pattern was found only for one community (Stipa glareosa community). At large scale (vegetation type or landscape/region), a significant positive relationship was found. Species richness ranged from 4 to 35 species, and community above-ground productivity from 13 to 368 g·m–2·yr–1. The highest species richness and above-ground productivity were found in the alpine meadow community, followed by meadow steppe, typical steppe and desert steppe.

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