Temporal variation of soil organic matter content and potential determinants in Tibet, China
文献类型：期刊论文
| 作者 | Dai, Fuqiang1,2,4; Su, Zhengan1,3; Liu, Shuzhen1; Liu, Gangcai1,3 |
| 刊名 | CATENA
 |
| 出版日期 | 2011-06-01 |
| 卷号 | 85期号:3页码:288-294 |
| 关键词 | Soil Organic Matter (Som) Pasture Degradation Overgrazing Climate Warming |
| 文献子类 | Article |
| 英文摘要 | Understanding temporal variations in soil organic matter (SOM) is important because SOM improves soil, sustains soil productivity, and sequesters carbon. The Tibetan Plateau plays a critical role in climate change at both regional and global scales. Thus, the main objective of this study was to investigate temporal variations in SOM content in Tibetan soils as an important indicator of climate change. SOM content data were obtained from soil surveys conducted in the 1980s and resampled in the 2000s. In this study, SOM content data from the A horizon of the soil profile were compared over time, and a paired t-test was conducted to verify differences between the two datasets. The results reveal that SUM content in the A horizon decreased significantly. To determine the causes of SOM content decreases in the A horizon, soil samples were grouped into ten soil types, four land-use types, and seven physiogeographical units. SUM content in four soil types (felty soils, cambisols in the World Reference Base (WRB) for soil resources; cold calcic soils, cambisols in the WRB; bog soils, gleysols in the WRB; and meadow soils, umbric gleysols/haplic phaeozem in the WRB), pasture, and broad valleys and basins of the south Tibetan zone of montane shrubby steppe decreased significantly in the A horizon. Based on the analysis of some known realities, this change should be attributed to pasture degradation resulting from overgrazing and climate warming. (C) 2011 Elsevier B.V. All rights reserved. |
| WOS关键词 | LITHUANIAN EUTRIC ALBELUVISOLS ; CARBON STOCKS ; LAND-USE ; CLIMATE-CHANGE ; VERTICAL-DISTRIBUTION ; MICROBIAL COMMUNITY ; GRASSLAND SOILS ; PLATEAU ; DYNAMICS ; STORAGE |
| 语种 | 英语 |
| WOS记录号 | WOS:000289183600012 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/67999]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Liu, Gangcai |
| 作者单位 | 1.Chinese Acad Sci & Minist Water Resources, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 2.China W Normal Univ, Coll Land & Resources, Nanchong 637002, Peoples R China 3.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China 4.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dai, Fuqiang,Su, Zhengan,Liu, Shuzhen,et al. Temporal variation of soil organic matter content and potential determinants in Tibet, China[J]. CATENA,2011,85(3):288-294. |
| APA | Dai, Fuqiang,Su, Zhengan,Liu, Shuzhen,&Liu, Gangcai.(2011).Temporal variation of soil organic matter content and potential determinants in Tibet, China.CATENA,85(3),288-294. |
| MLA | Dai, Fuqiang,et al."Temporal variation of soil organic matter content and potential determinants in Tibet, China".CATENA 85.3(2011):288-294. |
入库方式： OAI收割
来源：地理科学与资源研究所
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