| 开垦和弃耕对黑河上游亚高山草甸土壤氮库的影响 |
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| 引用本文： | 曹静娟,尚占环,郭瑞英,崔光欣,龙瑞军.开垦和弃耕对黑河上游亚高山草甸土壤氮库的影响[J].干旱区资源与环境,2011(4):171-175. |
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| 作者姓名： | 曹静娟 尚占环 郭瑞英 崔光欣 龙瑞军 |
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| 作者单位： | 甘肃农业大学草业学院;兰州大学青藏高原生态系统管理国际中心草地农业科技学院;中国科学院青藏高原研究所; |
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| 基金项目： | 世界银行/全球环境基金(052456CHA-GS-Y-4); 国家自然科学基金重点项目(30730069)资助 |
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| 摘 要： | 通过分析天然放牧草地、20年燕麦耕地、3年燕麦弃耕地、10年燕麦弃耕地的七壤全氮、微生物量氮含量的差异,旨在探讨改变上地利用方式对黑河上游亚高山草甸土壤氮库的影响.结果表明:开垦和弃耕对黑河上游地区草地土壤氮库有显著影响.亚高山草甸被开垦为燕麦耕地20年后,土壤全氮含量(0-30cm)减少了21-35%,微生物量氮含量...
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| 关 键 词： | 黑河上游 亚高山草甸 开垦 弃耕 氮库 |
Effects of cultivation and subsequent abandonment on soil nitrogen pools of the Sub-Alpine Meadow in the headwater area of Heihe River |
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| CAO Jingjuan,SHANG Zhanhuan,GUO Ruiying,CUI Guangxin,LONG Ruijun.Effects of cultivation and subsequent abandonment on soil nitrogen pools of the Sub-Alpine Meadow in the headwater area of Heihe River[J].Journal of Arid Land Resources and Environment,2011(4):171-175. |
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| Authors: | CAO Jingjuan SHANG Zhanhuan GUO Ruiying CUI Guangxin LONG Ruijun |
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| Institution: | CAO Jingjuan1,SHANG Zhanhuan2,3,GUO Ruiying4,CUI Guangxin2,LONG Ruijun2(1.College of Grassland Science,Gansu Agricultural University,Lanzhou 730070,P.R.China,2.International Center for Tibetan Plateau Ecosystem Management,College of Pastoral Agriculture Science and Technology,Lanzhou University,Lanzhou 730020,3.Institution of Tibetan Plateau Research,Chinese Academy of Sciences,Beijing 100085,4.Laboratory of Arid and Grassland Ecology of Education Ministry,Lanzhou 7300... |
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| Abstract: | Measurement of soil total nitrogen(TN) and microbial biomass nitrogen(MBN) contents on four typical land-use types including native meadow for grazing,oats cultivation for 20 years,oats abandonment for 3 years and oats abandonment for 10 years were carried out to detect the effect of land-use change on soil nitrogen pools of the sub-alpine meadow in the headwater area of Heihe River.The results showed that there was a significant influence of cultivation and subsequent abandonment on soil nitrogen pools.Aft... |
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| Keywords: | the headwater area of Heihe River sub-alpine meadow cultivation abandonment nitrogen pools |
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