Spatial distributions and temporal variations of the near-surface soil freeze state across China under climate change
文献类型：期刊论文
| 作者 | Wang, Xiqiang1,2; Chen, Rensheng1; Liu, Guohua1,2; Yang, Yong1; Song, Yaoxuan1; Liu, Junfeng1; Liu, Zhangwen1; Han, Chuntan1; Liu, Xiaojiao1,2; Guo, Shuhai1,2 |
| 刊名 | GLOBAL AND PLANETARY CHANGE
 |
| 出版日期 | 2019 |
| 卷号 | 172页码:150-158 |
| 关键词 | Freeze state Spatial distribution Temporal variation Frozen ground region Climate warming |
| ISSN号 | 0921-8181 |
| DOI | 10.1016/j.gloplacha.2018.09.016 |
| 通讯作者 | Chen, Rensheng(crs2008@lzb.ac.cn) |
| 英文摘要 | The near-surface soil freeze state is affected by global warming, and its changes have profound effects on landscapes, ecosystems and hydrological processes. On the basis of daily soil freeze observational data at 476 meteorological stations over 50 freezing years from September 1, 1961 to August 31, 2011, the spatial distributions and temporal variations of the near-surface soil freeze state were estimated using five freeze variables (first date, last date, maximum seasonally frozen depth, duration and actual number of freeze days) across China, which was divided into three regions (eastern China, northwestern China and the Qinghai-Tibetan Plateau (QTP)). The near-surface soil freeze state varied greatly across China. The QTP has an earlier freeze, later thaw, longer freeze days and deeper seasonally frozen depth than the other two regions. The spatial distributions of the near-surface soil freeze state can be explained largely by altitude in northwestern China and on the QTP, whereas they can be explained by latitude in eastern China. The near-surface soil freeze state has changed significantly over 50 freezing years. On average across China over the study period, the first date of freezing was delayed by approximately 10 +/- 1 days with a rate of 0.20 +/- 0.02 days/year, the last date advanced by approximately 18 +/- 2 days with a rate of 0.36 +/- 0.04 days/year, the duration and the number of freeze days decreased by 28 +/- 2 and 23 +/- 2 days with rates of 0.56 +/- 0.04 and 0.45 +/- 0.04 days/year, respectively, and the maximum seasonally frozen depth decreased by 20 +/- 3 cm with a rate of 0.41 +/- 0.06 cm/year. The change in the freeze variables is relatively large in high-latitude and high-altitude regions. |
| 收录类别 | SCI |
| WOS关键词 | PERMAFROST REGIONS ; ACTIVE LAYER ; TIME-SERIES ; FROZEN ; THAW ; PRECIPITATION ; TEMPERATURE ; DYNAMICS ; REGIMES |
| WOS研究方向 | Physical Geography ; Geology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000456222800012 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558203 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Chen, Rensheng |
| 作者单位 | 1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Qilian Alpine Ecol & Hydrol Res Stn, Lanzhou 730000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xiqiang,Chen, Rensheng,Liu, Guohua,et al. Spatial distributions and temporal variations of the near-surface soil freeze state across China under climate change[J]. GLOBAL AND PLANETARY CHANGE,2019,172:150-158. |
| APA | Wang, Xiqiang.,Chen, Rensheng.,Liu, Guohua.,Yang, Yong.,Song, Yaoxuan.,...&Zheng, Qin.(2019).Spatial distributions and temporal variations of the near-surface soil freeze state across China under climate change.GLOBAL AND PLANETARY CHANGE,172,150-158. |
| MLA | Wang, Xiqiang,et al."Spatial distributions and temporal variations of the near-surface soil freeze state across China under climate change".GLOBAL AND PLANETARY CHANGE 172(2019):150-158. |
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来源：寒区旱区环境与工程研究所
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