DOI: 10.5194/tc-9-1321-2015
Scopus记录号: 2-s2.0-84933044196
论文题名: Changes in the timing and duration of the near-surface soil freeze/thaw status from 1956 to 2006 across China
作者: Wang K ; , Zhang T ; , Zhong X
刊名: Cryosphere
ISSN: 19940416
出版年: 2015
卷: 9, 期: 3 起始页码: 1321
结束页码: 1331
语种: 英语
英文关键词: air temperature
; arrival date
; climate change
; cryosphere
; environmental indicator
; freeze-thaw cycle
; frozen ground
; spatiotemporal analysis
; urbanization
; weather station
; China
英文摘要: The near-surface soil freeze/thaw status is an important indicator of climate change. Using data from 636 meteorological stations across China, we investigated the changes in the first date, the last date, the duration, and the number of days of the near-surface soil freeze over the period 1956-2006. The results reveal that the first date of the near-surface soil freeze was delayed by about 5 days, or at a rate of 0.10 ± 0.03 day yr-1, and the last date was advanced by about 7 days, or at a rate of 0.15 ± 0.02 day yr-1. The duration of the near-surface soil freeze decreased by about 12 days or at a rate of 0.25 ± 0.04 day yr-1, while the actual number of the near-surface soil freeze days decreased by about 10 days or at a rate of 0.20 ± 0.03 day yr-1. The rates of changes in the near-surface soil freeze/thaw status increased dramatically from the early 1990s through the end of the study period. Regionally, the changes in western China were greater than those in eastern China. Changes in the near-surface soil freeze/thaw status were primarily controlled by changes in air temperature, but urbanization may also play an important role. © 2015 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75278
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
There are no files associated with this item.
作者单位: Key Laboratory of Western China's Environmental Systems, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, China; Laboratory of Remote Sensing and Geospatial Science, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, China
Recommended Citation:
Wang K,, Zhang T,, Zhong X. Changes in the timing and duration of the near-surface soil freeze/thaw status from 1956 to 2006 across China[J]. Cryosphere,2015-01-01,9(3)