| 黄土高原侵蚀区长芒草对坡地土壤水分养分的影响 |
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| 引用本文： | 韩凤朋,董丽娜,罗文林,张兴昌.黄土高原侵蚀区长芒草对坡地土壤水分养分的影响[J].草地学报,2008,16(4):403-407. |
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| 作者姓名： | 韩凤朋 董丽娜 罗文林 张兴昌 |
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| 作者单位： | 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 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，西北农林科技大学校科研和教改项目，国家科技支撑计划 |
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| 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。
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| 关 键 词： | 黄土高原 人工草地 土壤水分 养分 |
| 收稿时间： | 2007-06-25 |
Effects of Stipa bungeana on Soil Water Contents and Nutrients of Sloping Lands in Loess Plateau of China |
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| HAN Feng-peng,DONG Li-na,LUO Wen-lin,ZHANG Xing-chang.Effects of Stipa bungeana on Soil Water Contents and Nutrients of Sloping Lands in Loess Plateau of China[J].Acta Agrestia Sinica,2008,16(4):403-407. |
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| Authors: | HAN Feng-peng DONG Li-na LUO Wen-lin ZHANG Xing-chang |
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| Institution: | 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 |
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| 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. |
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| Keywords: | The Loess Plateau Sown pasture Soil water contents Soil nutrients |
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