Distribution of soil organic carbon under different vegetation zones in the Ili River Valley, Xinjiang
查看参考文献23篇
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文摘
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We analyzed and estimated the distribution and reserves of soil organic carbon under nine different vegetation conditions including alpine meadow, meadow steppe, typical steppe, desert steppe, and temperate coniferous forest and so on, in the lli River valley, Xinjiang according to data from field investigations and laboratory analyses in 2008 and 2009. The study results show that the soil organic carbon content in the lli River valley varies with the type of vegetation. In the 0-50 cm soil horizon, the soil organic carbon content is the highest under the vegetation types of alpine meadow and meadow steppe, slightly lower under temperate coniferous forest and typical steppe, and the lowest under the intrazonal vegetation and desert vegetation types. The soil organic carbon content shows basically a tendency to decrease as soil depth increases under various vegetation types except in the case of the intrazonal vegetation. Similarly, the soil organic carbon density is the highest and varies little under the vegetation types of alpine meadow, meadow steppe and temperate coniferous forest, and is the lowest under the desert vegetation type. Both the soil organic carbon content and density in the topsoil of meadows in the lli River valley are high, so protecting meadows in the lli River valley, and especially their topsoil, should be a priority so that the potential of change in soil organic carbon in the shallow soil horizon is reduced, and this means maintenance of the stability of the soil carbon pool. |
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来源
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Journal of Geographical Sciences
,2010,20(5):729-740 【核心库】
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DOI
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10.1007/s11442-010-0807-4
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关键词
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vegetation
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grassland
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soil organic carbon
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Ili River Valley
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地址
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Xinjiang Institute of Ecology and Geography, CAS, Key Laboratory of Oasis Ecology and Desert Environment, Urumqi, 830011
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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1009-637X |
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学科
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自然地理学 |
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基金
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The National Science and Technology Support Plan
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CAS Western Light Program
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文献收藏号
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CSCD:3922061
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