Evolution of permafrost in China during the last 20 ka

doi:10.1007/s11430-018-9272-0

GIG OpenIR

	Jin, Huijun 1,2,3; Jin, Xiaoying 1,3; He, Ruixia 1; Luo, Dongliang 1; Chang, Xiaoli 1,4; Wang, Shaoling 1; Marchenko, Sergey S.1,5; Yang, Sizhong 1,6; Yi, Chaolu 7; Li, Shijie 8; Harris, Stuart A.9
	Evolution of permafrost in China during the last 20 ka
刊名	SCIENCE CHINA-EARTH SCIENCES
ISSN号	1674-7313
	2019-08-01
卷号	62 期号:8 页码:1207-1223
DOI	10.1007/s11430-018-9272-0
语种	英语
WOS研究方向	Geology
摘要	The formation and evolution of permafrost in China during the last 20 ka were reconstructed on the basis of large amount of paleo-permafrost remains and paleo-periglacial evidence, as well as paleo-glacial landforms, paleo-flora and paleofauna records. The results indicate that, during the local Last Glacial Maximum (LLGM) or local Last Permafrost Maximum (LLPMax), the extent of permafrost of China reached 5.3x10(6)-5.4x10(6) km(2), or thrice that of today, but permafrost shrank to only 0.80x10(6)-0.85x10(6) km(2), or 50% that of present, during the local Holocene Megathermal Period (LHMP), or the local Last Permafrost Minimum (LLPMin). On the basis of the dating of periglacial remains and their distributive features, the extent of permafrost in China was delineated for the two periods of LLGM (LLPMax) and LHMP (LLPMin), and the evolution of permafrost in China was divided into seven periods as follows: (1) LLGM in Late Pleistocene (ca. 20000 to 13000-10800 a BP) with extensive evidence for the presence of intensive ice-wedge expansion for outlining its LLPMax extent; (2) A period of dramatically changing climate during the early Holocene (10800 to 8500-7000 a BP) when permafrost remained relatively stable but with a general trend of shrinking areal extent; (3) The LHMP in the Mid-Holocene (8500-7000 to 4000-3000 a BP) when permafrost degraded intensively and extensively, and shrank to the LLPMin; (4) Neoglaciation during the late Holocene (4000-3000 to 1000 a BP, when permafrost again expanded; (5) Medieval Warming Period (MWP) in the late Holocene (1000-500 a BP) when permafrost was in a relative decline; (6) Little Ice Age (LIA) in the late Holocene (500-100 a BP), when permafrost relatively expanded, and; (7) Recent warming (during the 20th century), when permafrost continuously degraded and still is degrading. The paleo-climate, geography and paleopermafrost extents and other features were reconstructed for each of these seven periods.
关键词	Permafrost evolution Cryogenic wedge structures Local Last Glacial Maximum (LLGM) Local Holocene Megathermal Period (LHMP) China
WOS记录号	WOS:000472529900003
收录类别	SCI
引用统计
文献类型	期刊论文
条目标识符	http://ir.gig.ac.cn/handle/344008/50018
通讯作者	Jin, Huijun
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Northeast China Observat Stn Cold Reg Engn & Envi, State Key Lab Frozen Soils Engn, Lanzhou 730000, Gansu, Peoples R China 2.Harbin Inst Technol, Sch Civil Engn, Harbin 150090, Heilongjiang, Peoples R China 3.Univ Chinese Acad Sci, Sch Resources & Environm, Beijing 100049, Peoples R China 4.Hunan Univ Sci & Technol, Xiangtan 411201, Peoples R China 5.Univ Alaska Fairbanks, Geophys Inst, Permafrost Lab, Fairbanks, AK 99775 USA 6.GFZ German Res Ctr Geosci, D-14473 Potsdam, Germany 7.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100010, Peoples R China 8.Chinese Acad Sci, Inst Geochem, Guiyang 550081, Guizhou, Peoples R China 9.Univ Calgary, Dept Geog, Calgary, AB T2N 1N4, Canada
推荐引用方式 GB/T 7714	Jin, Huijun,Jin, Xiaoying,He, Ruixia,et al. Evolution of permafrost in China during the last 20 ka[J]. SCIENCE CHINA-EARTH SCIENCES,2019,62(8):1207-1223.
APA	Jin, Huijun.,Jin, Xiaoying.,He, Ruixia.,Luo, Dongliang.,Chang, Xiaoli.,...&Harris, Stuart A..(2019).Evolution of permafrost in China during the last 20 ka.SCIENCE CHINA-EARTH SCIENCES,62(8),1207-1223.
MLA	Jin, Huijun,et al."Evolution of permafrost in China during the last 20 ka".SCIENCE CHINA-EARTH SCIENCES 62.8(2019):1207-1223.