气候变化领域集成服务门户(CCPortal): Evidence of Warming From Long-Term Records of Climate and Permafrost in the Hinterland of the Qinghai-Tibet Plateau

CCPortal

DOI	10.3389/fenvs.2022.836085
	Evidence of Warming From Long-Term Records of Climate and Permafrost in the Hinterland of the Qinghai-Tibet Plateau
	Zhou, Fujun; Yao, Miaomiao; Fan, Xingwen; Yin, Guoan; Meng, Xianglian; Lin, Zhanju
通讯作者	Fan, XW ; Lin, ZJ (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou, Peoples R China. ; Fan, XW (通讯作者)，Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China.
发表日期	2022
EISSN	2296-665X
卷号	10
英文摘要	The Qinghai-Tibet Plateau (QTP) is characterized by its extreme climate and dominated by periglacial processes. Permafrost conditions vary greatly, and the recent changes on the QTP are not well known in the hinterland. Here, we examine the changes in climate and permafrost temperatures in several different regions. Climate data were obtained from three weather stations from 1957 to 2019. Annual mean air temperature (T-a) has gradually increased at .031 degrees C/yr-.039 degrees C/yr. Climate warming has been more rapid in the past two decades, particularly during the cold season (November to February). Precipitation has also been slowly increasing during the instrumental record. However, there is pronounced heterogeneity in the seasonal distribution of precipitation, with very little falling between October and April. Ground temperatures and active-layer thickness (ALT) have been investigated over similar to 20 years at five sites representative of the hinterland of the QTP. These sites are located along the Qinghai-Tibet Highway, which crosses the permafrost zone and traverses the mountainous area and basin areas. Annual mean ground temperatures within the active layer (T-al similar to 1 m depth) indicate recent ground warming at all sites, at rates near .05 degrees C/yr. The ALT at five sites has been increasing steadily by 2-9 cm/yr, with an average of 4.6 cm/yr. The temperature near the permafrost table (T-ps) has been increasing at .01 degrees C/yr and .06 degrees C/yr, with an average of .03 degrees C/yr. Permafrost temperatures at 15 m depth (T-g) have been increasing by about .01 degrees C/yr-.02 degrees C/yr. The southern boundary (AD site) of the permafrost has warmed the least among the five locations. In high mountainous areas where permafrost temperatures are low (e.g., KLS site), the annual mean T-g has increased by nearly .02 degrees C/yr. The rate of permafrost warming at a basin site (BLH), with relatively high ground temperatures, was approximately .01 degrees C/yr. The GIPL2.0 model simulation results indicate that the annual mean permafrost temperature at 1 m depth at these sites will increase by .6 degrees C-1.8 degrees C in the next 100 years (to 2100) and that ALT will increase by similar to 40-100 cm. We also discuss the impacts of permafrost changes on the environment and infrastructure on the QTP. This study provides useful information to understand observed and anticipated permafrost changes in this region, under different shared socioeconomic pathways, which will allow engineers to develop adaptation measures.
关键词	THERMAL REGIME ENGINEERING CORRIDOR GROUND TEMPERATURES THERMOKARST LAKES REGIONS DEGRADATION BASIN PRECIPITATION DISTURBANCE VEGETATION
英文关键词	climate change; permafrost warming; active-layer thickness; ground temperature; Qinghai-Tibet Plateau
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000769766700001
来源期刊	FRONTIERS IN ENVIRONMENTAL SCIENCE
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/253798
作者单位	[Zhou, Fujun; Yao, Miaomiao; Fan, Xingwen; Yin, Guoan; Lin, Zhanju] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou, Peoples R China; [Zhou, Fujun; Meng, Xianglian] China Railway First Survey & Design Inst Grp Co L, Xian, Peoples R China; [Yao, Miaomiao; Fan, Xingwen] Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Fujun,Yao, Miaomiao,Fan, Xingwen,et al. Evidence of Warming From Long-Term Records of Climate and Permafrost in the Hinterland of the Qinghai-Tibet Plateau[J]. 中国科学院西北生态环境资源研究院,2022,10.
APA	Zhou, Fujun,Yao, Miaomiao,Fan, Xingwen,Yin, Guoan,Meng, Xianglian,&Lin, Zhanju.(2022).Evidence of Warming From Long-Term Records of Climate and Permafrost in the Hinterland of the Qinghai-Tibet Plateau.FRONTIERS IN ENVIRONMENTAL SCIENCE,10.
MLA	Zhou, Fujun,et al."Evidence of Warming From Long-Term Records of Climate and Permafrost in the Hinterland of the Qinghai-Tibet Plateau".FRONTIERS IN ENVIRONMENTAL SCIENCE 10(2022).