›› 2008, Vol. 16 ›› Issue (4): 403-407.DOI: 10.11733/j.issn.1007-0435.2008.04.016

• 研究论文 • 上一篇    下一篇

黄土高原侵蚀区长芒草对坡地土壤水分养分的影响

韩凤朋1,2, 董丽娜1,3, 罗文林1,3, 张兴昌1,3   

  1. 1. 中国科学院水土保持与生态环境研究中心(西北农林科技大学水土保持研究所)黄土高原土壤侵蚀与旱地农业国家重点实验室, 杨凌, 712100;
    2. 中国科学院研究生院, 北京, 100039;
    3. 西北农林科技大学资源与环境学院,杨凌 712100
  • 收稿日期:2007-06-25 修回日期:2007-10-30 出版日期:2008-08-15 发布日期:2008-08-15
  • 通讯作者: 张兴昌,E-mail:zhangxc@ms.iswc.ac.cn
  • 作者简介:韩凤朋(1980- ),男,山东日照人,在读博士,主要从事环境化学研究,E-mail:hanxiangzi007@126.com
  • 基金资助:
    国家973计划(2007CB106803);西北农林科技大学科研创新团队支持计划;国家科技支撑计划(2006BAD09B06)

Effects of Stipa bungeana on Soil Water Contents and Nutrients of Sloping Lands in Loess Plateau of China

HAN Feng-peng1,2, DONG Li-na1,3, LUO Wen-lin1,3, ZHANG Xing-chang1,3   

  1. 1. State Key Laboratory of Soil Erosion and Dry-land Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Northwest A&F University, Yangling, Shaanxi 712100, China;
    2. Graduate School, Chinese Academy of Sciences, Beijing 100039, China;
    3. College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
  • Received:2007-06-25 Revised:2007-10-30 Online:2008-08-15 Published:2008-08-15

摘要: 在黄土高原神木六道沟流域选相邻退耕坡地和裸地,均匀布点采样结合室内分析,采用SPSS处理数据,研究30龄长芒草(Stipa bungeana)对土壤水分、养分的影响。结果表明:在长芒草根系分布区土壤水分下降很快,并且形成干层,其中40~60 cm含水量均低于5.5%,最低达3.2%;同时,长芒草可使土壤养分在表层累积,而降低20~50cm土层处养分含量;全氮、全磷、有机质、硝态氮和铵态氮含量均随土层的加深而降低。

关键词: 黄土高原, 人工草地, 土壤水分, 养分

Abstract: The effects of Stipa bungeana Trin.sown 30 years ago on the soil water contents and nutrients of the sloping lands in Loess Plateau were studied in Shenmu Experimental Station by the comparison of S.bungeana vs.bare sloping lands.The results show that the soil profile with the root distribution of S.bungeana had lower water contents and someplace formed the desiccation in deep soil layer.The mean soil water content in depth of 40-60 cm was below 5.5% with lowest point at 3.2%.The plantation of S.bungeana resulted in the accumulation of soil nutrients in soil surface layer,but reduced the content of nutrients in 20-50 cm depth.The contents of total nitrogen,total phosphorus,organic matter,nitrate nitrogen,and ammonium nitrogen were decreased gradually along with the depth of soil profile.

Key words: The Loess Plateau, Sown pasture, Soil water contents, Soil nutrients

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