气候变化领域集成服务门户(CCPortal): A 10-yr thermal regime of permafrost beneath and adjacent to an alpine thermokarst lake, Beiluhe Basin, Qinghai-Tibet Plateau, China

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DOI	10.1002/ppp.2107
	A 10-yr thermal regime of permafrost beneath and adjacent to an alpine thermokarst lake, Beiluhe Basin, Qinghai-Tibet Plateau, China
	Sun, Zhizhong; Zhang, Shujuan; Li, Guoyu; Wu, Guilong; Liu, Yongzhi
通讯作者	Sun, ZZ (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou, Peoples R China.
发表日期	2021
ISSN	1045-6740
EISSN	1099-1530
起始页码	618
结束页码	626
卷号	32 期号:4
英文摘要	Thermokarst lakes are distributed widely in permafrost regions on the Qinghai-Tibet Plateau (QTP), China. Better knowledge of ground thermal variability beneath and around thermokarst lakes is important for understanding future landscape development and hydrological changes. At a typical undisturbed small, shallow, alpine thermokarst lake in the Beiluhe Basin on the QTP, ground temperatures beneath and adjacent to the lake were monitored at four locations with maximum 30 m depth from the lake center to natural ground. The lake is elliptical with an area of similar to 700 m(2) and maximum water depth of 0.6 m. Permafrost was present beneath and adjacent to the lake during the monitoring period. However, supra-taliks were present above the permafrost table beneath the lake before monitoring of ground temperature began, but were absent around the lake. The supra-permafrost taliks beneath the lake have thickened over time. The difference in mean permafrost table depth between the lake center and natural ground reached 5.14 m, and permafrost table depths increased beneath the lake, but changed indistinctively around the lake. Mean annual ground temperatures at different depths (5, 10, 20 and 30 m) were higher beneath the lake than around the lake, and mean increasing rates of ground temperature were also greater beneath the lake than around the lake. Ground temperature differences between the lake bottom and natural ground surface are important for understanding ground thermal patterns beneath and around thermokarst lakes.
英文关键词	Beiluhe Basin; permafrost; Qinghai-Tibet Plateau; supra-permafrost talik; thermal regime; thermokarst lake
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geology
WOS记录号	WOS:000693900400001
来源期刊	PERMAFROST AND PERIGLACIAL PROCESSES
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/253721
作者单位	[Sun, Zhizhong; Zhang, Shujuan; Li, Guoyu; Wu, Guilong; Liu, Yongzhi] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou, Peoples R China; [Li, Guoyu] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Da Xinganling Observat & Res Stn Frozen Ground En, Jiagedaqi, Peoples R China; [Wu, Guilong; Liu, Yongzhi] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Beiluhe Observat & Res Stn Frozen Soil Engn & Env, Geermu, Peoples R China
推荐引用方式 GB/T 7714	Sun, Zhizhong,Zhang, Shujuan,Li, Guoyu,et al. A 10-yr thermal regime of permafrost beneath and adjacent to an alpine thermokarst lake, Beiluhe Basin, Qinghai-Tibet Plateau, China[J]. 中国科学院西北生态环境资源研究院,2021,32(4).
APA	Sun, Zhizhong,Zhang, Shujuan,Li, Guoyu,Wu, Guilong,&Liu, Yongzhi.(2021).A 10-yr thermal regime of permafrost beneath and adjacent to an alpine thermokarst lake, Beiluhe Basin, Qinghai-Tibet Plateau, China.PERMAFROST AND PERIGLACIAL PROCESSES,32(4).
MLA	Sun, Zhizhong,et al."A 10-yr thermal regime of permafrost beneath and adjacent to an alpine thermokarst lake, Beiluhe Basin, Qinghai-Tibet Plateau, China".PERMAFROST AND PERIGLACIAL PROCESSES 32.4(2021).