| 青藏高原高寒草原土壤活性有机碳的分布特征 |
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| 引用本文： | 王建林,欧阳华,王忠红,常天军,李鹏,沈振西,钟志明.青藏高原高寒草原土壤活性有机碳的分布特征[J].地理学报,2009,64(7):771-781. |
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| 作者姓名： | 王建林 欧阳华 王忠红 常天军 李鹏 沈振西 钟志明 |
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| 作者单位： | 1. 西藏农牧学院植物科学技术系,林芝,860000
2. 中国科学院地理科学与资源研究所,北京,100101 |
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| 基金项目： | 国家自然科学基金项目(40661007) |
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| 摘 要： | 利用36个样点数据,分析了青藏高原高寒草原土壤活性有机碳(SAOC)分布特征.结果表明:(1)在水平方向上,SAOC含量呈现出东南高、西北低的总体态势和斑块状交错分布的格局,高值区主要集中在藏北高原腹地和喜马拉雅北麓湖盆区,不同草地型和自然地带SAOC含量差异显著;(2)在垂直方向上,不同草地型和自然地带0～40cm剖面SAOC含量分布状况,均可分为由高到低型、由低到高型和低-高-低型3个类型,表土层(0～10cm)与底土层(30～40cm)SAOC含量差异显著;(3)基于回归模型的标准系数法,分析了气候因子对高寒草原SAOC含量的影响程度,指出降水对高寒草原SAOC含量的贡献大于气温.
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| 关 键 词： | 青藏高原 高寒草原 土壤 活性有机碳 |
| 收稿时间： | 2009-03-15 |
| 修稿时间： | 2009-05-06 |
Distribution of Soil Active Organic Carbon of Alpine Grassland on Qinghai-Tibet Plateau |
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| WANG Jianlin,Ouyang Hua,WANG Zhonghong,CHANG Tianjun,LI Peng,SHEN Zhenxi,ZHONG Zhiming.Distribution of Soil Active Organic Carbon of Alpine Grassland on Qinghai-Tibet Plateau[J].Acta Geographica Sinica,2009,64(7):771-781. |
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| Authors: | WANG Jianlin Ouyang Hua WANG Zhonghong CHANG Tianjun LI Peng SHEN Zhenxi ZHONG Zhiming |
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| Institution: | 1.Plant Sci-Tech Department of Tibet Agricultural and Animal Husbandry College;Nyingchi 860000;China;2.Institute of Geographic Sciences and Natural Resources Research;CAS;Beijing 100101;China |
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| Abstract: | Based on the data from 36 sampling points,we analyzed the distribution of soil active organic carbon(SAOC) of alpine grassland on the Qinghai-Tibet Plateau.The results are shown as follows.(1) In the horizontal direction,the SAOC was significantly different between grassland types and natural transects.In general,its content appeared high in southeast and low in northwest with an overall plaque-like distribution pattern.The high-SAOC areas are mainly in the hinterland of the northern plateau and the Himalay... |
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