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荒漠生态系统鼠类对土壤和植被的扰动效应

蒋慧萍1,2;杨维康1;胡祚均3   

  1. 1中国科学院新疆生态与地理研究所, 乌鲁木齐 830011;2中国科学院研究生院, 北京 100039;3新疆林业学校,乌鲁木齐 830011
  • 收稿日期:2006-06-15 修回日期:1900-01-01 出版日期:2007-04-03 发布日期:2007-04-03

Disturbance effect of rodents on soil and vegetation in desert ecosystem

JIANG Hui-ping1,2; YANG Wei-kang1; HU Zuo-jun3   

  1. 1Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;2Graduate University of Chinese Academy of Sciences, Beijing 100039, China;3Xinjiang Forestry School, Urumqi 830011, China
  • Received:2006-06-15 Revised:1900-01-01 Online:2007-04-03 Published:2007-04-03

摘要: 干扰形成的斑块对荒漠生态系统时空异质性的维系和发展具有重要意义。鼠类作为生物干扰的重要代表,是荒漠生态系统斑块形成的主要来源,它们已从生理、形态、行为进化出一系列特点适应了荒漠生态系统的严酷环境,同时其挖掘、采食行为也深刻影响着荒漠生态系统的环境。本文主要从鼠类活动对土壤(包括土壤发生过程、土壤斑块的形成、土壤理化性质)和植物群落(包括物种多样性、生产力、植物种子)的扰动效应做了归纳总结,旨在阐明鼠类在荒漠生态系统中的作用。

关键词: 红树植物, 无瓣海桑扩散区, 树种, 生态位宽度, 生态位重叠

Abstract: Disturbance-caused patch is of significance in the development and maintenance of temporal and spatial heterogeneity in desert ecosystem, while rodents are the important representatives of bio-disturbance, being a major source of patch formation in desert ecosystem. Rodents have evolved a series of physiological, morphological, and behavioral characteristics to adapt the asperity of desert environment, and their excavating and feeding activities also deeply affect the environment of desert ecosystem. This paper summarized the disturbance effect of rodents on soil (pedogenesis, patch formation, and physical and chemical properties) and vegetation (species diversity, productivity, and seed dispersion), aimed to illustrate the contributions of rodents activities to desert ecosystem.

Key words: Mangrove, Sonneratia apetala extension area, Tree species, Niche breadth, Niche overlap