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中国沙漠 ›› 2007, Vol. 27 ›› Issue (2): 278-282.

• 生物土壤与生态 • 上一篇    下一篇

民勤绿洲边缘物种多样性对水资源变化的响应

杨自辉, 俄有浩, 方峨天, 刘虎俊, 马全林, 詹科杰   

  1. 甘肃省治沙研究所民勤荒漠草地生态系统国家野外科学观测研究站, 甘肃 武威 733000
  • 收稿日期:2006-02-15 修回日期:2006-03-27 出版日期:2007-03-20 发布日期:2007-03-20

Response of Plant Species Diversity to Water Resources Change in Minqin Oasis Fringe

YANG Zi-hui, E You-hao, FANG E-tian, LIU Hu-jun, MA Quan-lin, ZHAN Ke-jie   

  1. Minqin National Studies Station for Desert Steppe Ecosystem, Gansu Desert Control Research Institute, Wuwei 733000, Gansu, China
  • Received:2006-02-15 Revised:2006-03-27 Online:2007-03-20 Published:2007-03-20

摘要: 通过石羊河流域民勤绿洲边缘长期的生态定位观测和近年来对绿洲边缘的植被调查,计算植物种辛普森(Simpson)、香农威纳(Shannon-Wiener)多样性指数,分析物种多样性指数与地下水位下降趋势、年均降水量变化的相关性。结果表明:随地下水位的下降植物种类减少、物种多样性呈减低趋势;降水量与植物物种多样性具有较强的正相关关系。

关键词: 民勤绿洲边缘, 物种多样性, 地下水位, 降水量

Abstract: We have conducted long-term positioning observation to the ecology and short-term investigation into the vegetation of Minqin oasis. Based on the first-hand data we have calculated the plant species diversity by Simpson and Shannon-Wiener indexes, and have analyzed the correlation of the indexes with the variation of grounder water table and annual precipitation. The result showed that, with the decreasing of water table, the plant species reduced and species diversity expressed a decreasing tendency; the plant species diversity had a positive relation with precipitation quantity.

Key words: Minqin oasis fringe, species diversity, underground water table, precipitation amount

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