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首页> 外文期刊>Ecological research >Rhombomys opimus contribution to the 'fertile island' effect of tamarisk mounds in Junggar Basin
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Rhombomys opimus contribution to the 'fertile island' effect of tamarisk mounds in Junggar Basin

机译：Rhombomys opimus对准gar尔盆地柳丘“肥沃岛”效应的贡献

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摘要

Fertile islands are created and maintained by a combination of physical and biologically mediated processes. Plants have been shown to be very important in the formation of fertile islands, and recent research indicates that the activities of burrowing animals have a significant influence on the physiochemical properties of soil that can promote the development of fertile islands. In this paper, we chose tamarisk (Tamarix spp.)-a constructive species that grows in the oasis-desert eco-tone, and the great gerbil (Rhombomys opimus)-a widely distributed rodent in Central Asia to study the influence of great gerbils on soil nutrient dynamics in tamarisk mounds. Results indicate that fertile islands exist in tamarisk mounds without burrows of the great gerbil. However, the great gerbil's burrowing activities promote the fertile island effect in tamarisk mounds: soil nutrients under shrubs with great gerbil activity were significantly higher than inter-mound areas in both surface soil and deep soil from 15 to 50 cm. Available nitrogen in mounds with rodent burrows was over twice as high as in tamarisk mounds without burrows at the same depth. The great gerbil's burrowing activities promote the concentration of soil nutrients in the tamarisk mounds.
机译：通过结合物理和生物介导的过程来创造和维持肥沃的岛屿。业已证明，植物在形成肥沃的岛屿中非常重要，最近的研究表明，穴居动物的活动对土壤的物理化学性质具有重要影响，可以促进肥沃的岛屿的发展。在本文中，我们选择了以绿洲-沙漠生态调生长的建设性物种柳（Tamarix spp。）和中亚分布广泛的大型沙鼠（Rhombomys opimus）-以研究大型沙鼠的影响柳丘土壤养分动态变化结果表明，在柳丘中存在肥沃的岛屿，没有大沙鼠的洞穴。然而，伟大的沙鼠的穴居活动促进了番茄柳丘的肥沃岛效应：沙鼠活动力强的灌木下的土壤养分在15至50 cm处显着高于表土和深土的丘间区域。在相同深度下，有啮齿类动物洞穴的土墩中的有效氮含量比没有挖洞的柳土墩高。伟大的沙鼠的穴居活动促进了柳丘中土壤养分的浓度。

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  • 来源
    《Ecological research》 |2012年第4期|p.775-781|共7页
  • 作者

    Wenxuan Xu; Wei Liu; Weikang Yang; Chaowen Tang; David Blank;

  • 作者单位

    Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China,Graduate University of Chinese Academy of Sciences,Beijing 100049, China;

    School of Life Sciences, Sichuan University,Chengdu 610064, China;

    Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;

    Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China,Graduate University of Chinese Academy of Sciences,Beijing 100049, China;

    Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    great gerbil; biopedturbation; soil nutrients; ecosystem engineering;

    机译：大沙鼠生物扰动土壤养分;生态工程;

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