气候变化领域集成服务门户(CCPortal): Historical changes in the depth of seasonal freezing of Xing'anling-Baikal permafrost in China

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DOI	10.1007/s10113-018-1407-6
	Historical changes in the depth of seasonal freezing of Xing'anling-Baikal permafrost in China
	Zhang, Zhongqiong; Hou, Meiting; Wu, Qingbai; Gao, Siru
发表日期	2019
ISSN	1436-3798
EISSN	1436-378X
起始页码	451
结束页码	460
卷号	19 期号:2
英文摘要	Xing'anling-Baikal permafrost is located in the southern edge of the Northern Hemisphere permafrost, which is one of the most important regions of permafrost changes. Based on the monthly meteorological data and circumpolar active layer monitoring data in the last few decades, we analyzed the changes in the depth of seasonal freezing (DSF) and the thermal regime of Xing'anling-Baikal permafrost in China, and compared the state with that of the permafrost in Mongolia at the same latitude (LAT). The Xing'anling-Baikal permafrost in China was not connected in the section. The DSF changed between 0.78 and 3.25m. In the study area, DSF was the thickest in Tulihe and reduced to around. The change rate reached -16.0-4.9cm/a and decreased in most areas. The ground temperature raised at a rate of 0-0.41 degrees C/a, whereas that of other few areas decreased with a rate of -0.35 degrees C/a. Freezing duration spanned 141-176days. The changes were related to air temperature, altitude, LAT, and precipitation in the local area. Compared with the state of permafrost in Mongolia at the same LAT, the permafrost in China exhibited a faster rate of degradation. The permafrost in the Xing'anling area significantly responded to climate change. The results will aid in understanding the temporal and spatial variation in local permafrost and provide relevant verification for regional permafrost.
英文关键词	Xing'anling-Baikal permafrost; Ground temperature; Depth of seasonal freezing; Local factors
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences ; Environmental Studies
WOS关键词	ACTIVE-LAYER THICKNESS ; NORTHERN-HEMISPHERE ; THERMAL REGIME ; CLIMATE-CHANGE ; SNOW COVER ; SOIL ; DEGRADATION ; VEGETATION ; MOUNTAINS ; DYNAMICS
WOS记录号	WOS:000458271700013
来源期刊	REGIONAL ENVIRONMENTAL CHANGE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/240203
作者单位	[Zhang, Zhongqiong; Wu, Qingbai; Gao, Siru] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, 320 Donggangxi Rd, Lanzhou 730000, Gansu, Peoples R China; [Hou, Meiting] China Meteorol Adm Training Ctr, 46 Zhongguancun Nandajie, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhongqiong,Hou, Meiting,Wu, Qingbai,et al. Historical changes in the depth of seasonal freezing of Xing'anling-Baikal permafrost in China[J]. 中国科学院西北生态环境资源研究院,2019,19(2).
APA	Zhang, Zhongqiong,Hou, Meiting,Wu, Qingbai,&Gao, Siru.(2019).Historical changes in the depth of seasonal freezing of Xing'anling-Baikal permafrost in China.REGIONAL ENVIRONMENTAL CHANGE,19(2).
MLA	Zhang, Zhongqiong,et al."Historical changes in the depth of seasonal freezing of Xing'anling-Baikal permafrost in China".REGIONAL ENVIRONMENTAL CHANGE 19.2(2019).