Trends of freezing period and its main cause on the Qinghai-Tibetan Plateau from 1961 to 2018

doi:10.1007/s00704-021-03798-4

	Trends of freezing period and its main cause on the Qinghai-Tibetan Plateau from 1961 to 2018
	Zhao, Dongsheng 2; Gao, Xuan 1,2; Yang, Yi 1,3
刊名	THEORETICAL AND APPLIED CLIMATOLOGY
	2021-10-04
页码	12
ISSN号	0177-798X
DOI	10.1007/s00704-021-03798-4
通讯作者	Zhao, Dongsheng(zhaods@igsnrr.ac.cn)
英文摘要	The ecosystems of Qinghai-Tibetan Plateau (QTP) are very sensitive to climate change because of their unique structure and function. However, little attention has been paid to variations in cold non-growing season. In this study, based on daily mean temperature from 63 meteorological stations throughout the QTP during the period 1961 - 2018, the spatial and temporal variations in the freezing period (FP) were investigated. The FP was defined as the period between the date of the first autumn freeze and the date of the first spring thaw in the second year. Understanding how the FP changes are imperative in predicting future climate change and decision-making for implementing ecological conservation on the plateau. The results showed that the start of freezing period (SFP) exhibited a pronounced increasing trend with a rate of 0.0704 days year(-1) and the end of freezing period (EFP) showed an obviously decreasing trend with a rate of - 0.2537 days year(-1) at the regional scale. The length of freezing period (LFP) presented a significant negative trend at a rate of - 0.3256 days year(-1) for regional scale, which was mainly attributed to the earlier EFP. Spatially, later mean SFP, earlier mean EFP, and shorter mean LFP mainly occurred in the south of the QTP, covered the plateau temperate semi-arid (HIIC2) and plateau temperate humid/sub-humid (HIIAB1). For interannual trends, greater delayed SFP and greater advanced EFP were mainly observed in the south and east of the plateau. Furthermore, this study found that the variations in the SFP, EFP, and LFP were highly dependent on the elevation with EFP and LFP are positively correlated with elevation, while SFP is negatively correlated with elevation. At the regional scale, mean annual temperature was positively correlated with SFP and negatively correlated with EFP and LFP. Increasing temperature dominated interannual variation in FP on the plateau.
资助项目	Second Tibetan Plateau Scientific Expedition and Research Program[2019QZKK0403] ; National Natural Science Foundation of China[41571193] ; 'Strategic Priority Research Program' of the Chinese Academy of Sciences[XDA20020202]
WOS关键词	CLIMATE-CHANGE ; PERMAFROST REGION ; ALPINE MEADOW ; TEMPERATURE ; VEGETATION ; ACCLIMATION ; RESPIRATION ; EXTREMES ; SHIFTS ; SEASON
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000704185900001
资助机构	Second Tibetan Plateau Scientific Expedition and Research Program ; National Natural Science Foundation of China ; 'Strategic Priority Research Program' of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/165796]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhao, Dongsheng
作者单位	1.Chinese Acad Sci, Inst Mt Hazards & Environm, 9,Block 4,Renminnanlu Rd, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, 11A Datun Rd, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Dongsheng,Gao, Xuan,Yang, Yi. Trends of freezing period and its main cause on the Qinghai-Tibetan Plateau from 1961 to 2018[J]. THEORETICAL AND APPLIED CLIMATOLOGY,2021:12.
APA	Zhao, Dongsheng,Gao, Xuan,&Yang, Yi.(2021).Trends of freezing period and its main cause on the Qinghai-Tibetan Plateau from 1961 to 2018.THEORETICAL AND APPLIED CLIMATOLOGY,12.
MLA	Zhao, Dongsheng,et al."Trends of freezing period and its main cause on the Qinghai-Tibetan Plateau from 1961 to 2018".THEORETICAL AND APPLIED CLIMATOLOGY (2021):12.