Environmental controls on soil organic carbon and nitrogen stocks in the high-altitude arid western Qinghai-Tibetan Plateau permafrost region
文献类型：期刊论文
| 作者 | Wu, Xiaodong1; Zhao, Lin1; Fang, Hongbing1; Zhao, Yuguo2; Smoak, Joseph M.3; Pang, Qiangqiang1; Ding, Yongjian1 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
 |
| 出版日期 | 2016 |
| 卷号 | 121期号:1页码:176-187 |
| 关键词 | permafrost Qinghai-Tibetan Plateau SOC stocks total nitrogen active layer desert steppe |
| ISSN号 | 2169-8953 |
| DOI | 10.1002/2015JG003138 |
| 通讯作者 | Zhao, Lin(linzhao@lzb.ac.cn) ; Ding, Yongjian(dyj@lzb.ac.cn) |
| 英文摘要 | While permafrost in the circum-Artic has great influence on soil organic carbon (SOC) and total nitrogen (TN) stocks, this might not be the case in low-latitude arid permafrost regions. We test this hypothesis in the western Qinghai-Tibetan Plateau (QTP) permafrost region. Fifty-nine soil profiles were analyzed to examine the SOC and TN distribution and the controlling factors in western QTP, which is a desert steppe ecoregion. Mean stocks of SOC (5.29kgm(-2)) and TN (0.56kgm(-2)) for the top 200cm in this area were lower than those of the east QTP and circum-Arctic regions. The SOC and TN stocks under vegetative cover with permafrost conditions were significantly higher than those of desert conditions. The SOC and TN stocks for the layers of different depths were related to the content of clay, silt, and moisture. Although the active layer thickness (ALT) had a significant negative correlation to soil moisture, the ALT explained little or no variance in the SOC and TN stocks. The results showed that in the vast permafrost regions of the western QTP, the SOC and TN stocks are very low, and the main controlling factors for the SOC and TN are soil texture, moisture, and vegetation type. The SOC pool in this area may not be as vulnerable to degradation associated with climate warming and thus not emit greenhouse gases at the same rate as other permafrost regions. The different response of the SOC in this region should be considered in carbon cycling models. |
| 收录类别 | SCI |
| WOS关键词 | HEIHE RIVER-BASIN ; NORTHWESTERN CHINA ; ARCTIC ALASKA ; UPPER REACH ; CLIMATE ; MATTER ; STORAGE ; TUNDRA ; PRECIPITATION ; VULNERABILITY |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology |
| WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000370173100011 |
| 出版者 | AMER GEOPHYSICAL UNION |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557393 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zhao, Lin; Ding, Yongjian |
| 作者单位 | 1.Chinese Acad Sci, Cryosphere Res Stn Qinghai Tibetan Plateau, State Key Lab Cryospher Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou, Peoples R China 2.Chinese Acad Sci, Inst Soil Sci, Nanjing, Jiangsu, Peoples R China 3.Univ S Florida, Dept Environm Sci Policy & Geog, St Petersburg, FL 33701 USA |
| 推荐引用方式 GB/T 7714 | Wu, Xiaodong,Zhao, Lin,Fang, Hongbing,et al. Environmental controls on soil organic carbon and nitrogen stocks in the high-altitude arid western Qinghai-Tibetan Plateau permafrost region[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2016,121(1):176-187. |
| APA | Wu, Xiaodong.,Zhao, Lin.,Fang, Hongbing.,Zhao, Yuguo.,Smoak, Joseph M..,...&Ding, Yongjian.(2016).Environmental controls on soil organic carbon and nitrogen stocks in the high-altitude arid western Qinghai-Tibetan Plateau permafrost region.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,121(1),176-187. |
| MLA | Wu, Xiaodong,et al."Environmental controls on soil organic carbon and nitrogen stocks in the high-altitude arid western Qinghai-Tibetan Plateau permafrost region".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 121.1(2016):176-187. |
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来源：寒区旱区环境与工程研究所
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