干旱区生态环境知识资源中心(Arid): Trends of freezing period and its main cause on the Qinghai-Tibetan Plateau from 1961 to 2018

Arid

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; Gao, Xuan; Yang, Yi
通讯作者	Zhao, DS (corresponding author), Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, 11A Datun Rd, Beijing 100101, Peoples R China.
来源期刊	THEORETICAL AND APPLIED CLIMATOLOGY
ISSN	0177-798X
EISSN	1434-4483
出版年	2021
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.
类型	Article
语种	英语
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000704185900001
WOS关键词	CLIMATE-CHANGE ; PERMAFROST REGION ; ALPINE MEADOW ; TEMPERATURE ; VEGETATION ; ACCLIMATION ; RESPIRATION ; EXTREMES ; SHIFTS ; SEASON
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364791
作者单位	[Zhao, Dongsheng; Gao, Xuan] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, 11A Datun Rd, Beijing 100101, Peoples R China; [Gao, Xuan; Yang, Yi] Chinese Acad Sci, Inst Mt Hazards & Environm, 9,Block 4,Renminnanlu Rd, Chengdu 610041, Peoples R China; [Yang, Yi] 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]. 中国科学院地理科学与资源研究所,2021.
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.
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).