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青藏高原样带高寒生态系统土壤有机碳分布及其影响因子
Distribution characteristics and influencing factors of soil organic carbon in alpine ecosystems on Tibetan Plateau transect

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田玉强 1   欧阳华 1   宋明华 1   牛海山 2   胡启武 1  
文摘 沿青藏公路,以跨越山地荒漠、高寒草甸-草原和山地灌丛-针叶林等地带的样带为研究区域,在23个样点采集土样分析土壤有机碳(SOC)分布及其影响因子.结果表明,在样带水平方向,不同植被下整个剖面的SOC含量从高到低依次是森林>灌丛>草甸>草原>荒漠;在垂直方向上,森林、灌丛和草甸植被0~10 cm土层SOC含量、草原植被20 cm以上土层SOC含量皆显著高于其下各层,荒漠植被各土层SOC含量分布均一.灰色关联度分析表明;降水是影响样带内SOC分布的主导气候因子,随样带内水热条件的改善,降水对SOC分布的影响逐渐降低;降水和土壤粘粒对表层SOC分布的影响较大,土壤粉粒和砂粒对底层SOC分布影响明显.土壤容重和pH对SOC沿剖面分布的影响逐渐降低;植被生物量是影响不同植被下SOC分布的重要生物因子.
其他语种文摘 The undisturbed regions along the Qinghai-Tibet road crossing the natural zones of montane desert, alpine meadow-steppe, and rnontEine shrub-coniferous forest were chosen as study area. Soil samples were collected at 23 places and the relations between the influencing factors and distribution of soil organic carbon (SOC) content were studied. The results indicated that the orders of SOC content for the whole soil profile in different vegetation, in the horizontal direction, were showed as below: forest> shrub>meadow> steppe> desert; all the SOC contents of upper 10 cm soil layers in vegetations of forest, shrub and meadow, as well as that of upper 20 cm soil layers in steppe, in the vertical direction, were higher than that of corresponding lower soil layers. However, the SOC content in desert was uniform. The grey correlative analysis between the climatic factors and SOC content in upper part soil showed that the precipitation was the dominant climatic factor affecting the distribution of SOC on the Tibetan Plateau transect. The influence of precipitation on the horizontal distribution of SOC decreases asthe increase of precipitation in the horizontal direction. The vertical distribution of SOC along soil profile was greatly affected by precipitation or soil clay content in upper part of soil, as well as was clearly influenced by soil silt content or sand content in lower part of soil. The influences of both soil bulk density and soil pH on the vertical distribution of SOC along soil profile declined gradually. The plant biomasK was the most important biotic factor affecting the distribution of SOC.
来源 浙江大学学报. 农业与生命科学版 ,2007,33(4):443-449 【核心库】
关键词 青藏高原 ; 样带 ; 高寒生态系统 ; 土壤有机碳 ; 影响因子
地址

1. 中国科学院,地理科学与资源研究所, 北京, 100101  

2. 中国科学院,研究生院, 北京, 100039

语种 中文
文献类型 研究性论文
ISSN 1008-9209
学科 农业基础科学
基金 中国科学院知识创新工程重要方向项目 ;  国家973计划
文献收藏号 CSCD:2912436

参考文献 共 40 共2页

1.  Schlesinger W H. Evidence from chronosequence studies for a low carbon-storage potential of soil. Nature,1990,48:232-234 被引 236    
2.  Post W M. Soil carbon pools and life zones. Nature,1982,298:156-159 被引 541    
3.  Post W M. The global carbon cycle. American Scientist,1990,78:310-326 被引 125    
4.  王琳. 贡嘎山东坡土壤有机质及氮素分布特征. 地理学报,2004,59(6):1012-1019 被引 48    
5.  Kauppi P E. Biomass and carbon budget of European forests 1971 to 1990. Science,1992,256:70-74 被引 56    
6.  Ciais P. A large Northern Hemisphere terrestrial CO2 sink indicated by the 13C/12C ratio of atmospheric CO2. Science,1995,269:1098-1102 被引 78    
7.  Fan S. A large terrestrial carbon sink in North America implied by atmospheric and oceanic carbon dioxide data and models. Science,1998,282:442-446 被引 91    
8.  Houghton R A. The U.S carbon budget:contributions from land-use change. Science,1999,285:574-578 被引 170    
9.  FANG J Y. Changes in forest biomass carbon storage in China between 1949and 1998. Science,2001,292:2320-2322 被引 692    
10.  WU Hai-bin. Distribution and storage of soil organic carbon in China. Global Biogeochemical Cycle,2003,17(2):1-11 被引 7    
11.  Batjes N H. Total carbon and nitrogen in the soils of the world. European Journal of Soil Science,1996,47:151-163 被引 433    
12.  Jobbágy E G. The vertical distribution of soil organic carbon and relation to climate and vegetation. Ecological Applications,2000,10(2):423-436 被引 17    
13.  Jobbágy E G. The distribution of soil nutrients with depth:global patterns and imprint of plants. Biogeochemistry,2001,53:51-77 被引 4    
14.  李炳元. The boundary and area of the Tibetan Plateau in China. 地理研究,1987,6(3):57-63 被引 13    
15.  张镱锂. A discussion on the boundary and area of the Tibetan Plateau in China. 地理研究,2002,21(1):18 被引 1    
16.  马林. 青藏高原降水概况,1960 被引 1    
17.  王根绪. 青藏高原草地土壤有机碳库及其全球意义. 冰川冻土,2002,24(6):693-700 被引 121    
18.  刘允芬. 青藏高原东部生态系统土壤碳排放. 自然资源学报,2001,16(2):152-160 被引 43    
19.  裴志永. 青藏高原高寒草原碳排放及其迁移过程研究. 生态学报,2003,23(2):231-236 被引 48    
20.  WANG Lin. Soil Organic Matter Dynamics Along a Vertical Vegetation Gradient in the Gongga Mountain on the Tibetan Plateau. Journal of Integrative Plant Biology,2005,47(4):411-420 被引 16    
引证文献 27

1 王建林 青藏高原高寒草原土壤活性有机碳的分布特征 地理学报,2009,64(7):771-781
被引 19

2 于海英 气候变化对青藏高原植被影响研究综述 生态学杂志,2009,28(4):747-754
被引 40

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