| 内蒙古中北部土壤碳库构成及其影响因素 |
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| 引用本文： | 杨忠芳,夏学齐,余涛,侯青叶,冯海艳.内蒙古中北部土壤碳库构成及其影响因素[J].地学前缘,2011,18(6):1-10. |
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| 作者姓名： | 杨忠芳 夏学齐 余涛 侯青叶 冯海艳 |
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| 作者单位： | 中国地质大学（北京）地球科学与资源学院,北京,100083 |
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| 基金项目： | 中国地质调查局地质调查项目“中国典型地区土壤碳汇源转化机理研究”(1212011087125);国土资源部公益性行业科研专项“中国主要农耕区土壤碳库与固碳潜力研究”(200911020) |
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| 摘 要： | 采用网格采样法荻取内蒙古中北部半干旱区土壤样品共527件，分析其碳库构成特征及其影响因素，并初步评估了未来气候变化背景下的碳库变化趋势。结果表明，研究区土壤碳库仍以有机碳为主，不同土壤类型中有机碳占总碳61％～97％，其中沼泽土有机碳密度最高，风沙土最低，盐土无机碳密度最高，暗棕壤最低；在空间分布上，土壤碳受气温和降水...
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| 关 键 词： | 半干旱区 内蒙古 土壤碳库 全球变化 |
Soil carbon pool in the northeast Inner Mongolia and its influencing factors |
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| Yang Zhongfang,Xia Xueqi,Yu Tao,Hou Qingye,Feng Haiyan.Soil carbon pool in the northeast Inner Mongolia and its influencing factors[J].Earth Science Frontiers,2011,18(6):1-10. |
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| Authors: | Yang Zhongfang Xia Xueqi Yu Tao Hou Qingye Feng Haiyan |
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| Institution: | School of Earth Sciences and Resources,China University of Geosciences(Beijing),Beijing 100083,China |
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| Abstract: | 527 surface soil samples were collected and analyzed in the semi-arid area in the northeast Inner Mongolia to investigate the distribution of the organic and inorganic carbon pool,its influence factors and to access the change of the carbon pool under the climate change.The results showed that the carbon pool in the study area is still dominated by the total organic carbon(TOC) with the variation of 61%-97% under different soil types.The spatial distribution of soil organic and inorganic carbon was controlled significantly by the climate conditions such as temperature and precipitation.Soil organic carbon has a trend of decreasing with mean annual temperature(MAT),but increasing with mean annual precipitation(MAP).However,soil inorganic carbon has an opposite trend of increasing with MAT and decreasing with MAP.Based on the extent of temperature and precipitation change predicted by IPCC 2007,the overall carbon density in 2090-2099 caused by the climate change will decrease by about 1.22 kg/m2. |
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| Keywords: | semiarid area Inner Mongolia soil carbon pool global change |
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