气候变化领域集成服务门户(CCPortal): The thermal state of soils in Northern Yakutia

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DOI	10.21782/KZ1560-7496-2018-3(52-66
	The thermal state of soils in Northern Yakutia
	Fedoryov-Davydov D.G.; Davydov S.P.; Davydova A.I.; Shmelev D.G.; Ostroymov V.E.; Kholodov A.L.; Sorokovikov V.A.
发表日期	2018
ISSN	15607496
卷号	22 期号:3
英文摘要	Soil profile temperatures in Northern Yakutia depend on their location in tundra or taiga zones and subzones, water content (drainage conditions), ice content in the underlying permafrost, vegetation cover, as well as soil particle size (texture) and thickness of organic horizons. The studied soils differ mainly in winter temperatures. The mean coldest month temperatures of loam soils measured at 20 cm below the surface are 10°C higher in northern taiga than in southern tundra. However, the mean annual temperatures at this depth vary from -4.3 to -9.7°C in tundra and from -1.2 to -4.9°C in taiga. This discrepancy is primarily due to the effect of the snow cover which is thicker, less dense, and more stable in the forest landscapes. Sandy podburs have larger thawing degree-day sums and deeper 0°C, 5°C, and 10°C isotherms than the loamy soils of tundra or taiga zones. Xeromorphic soils of steppe ecosystems in the northern taiga subzone have the warmest summer temperatures and are most responsive to temperature change. © 2018 Scientific Journal Earth's Cryosphere.
英文关键词	Active layer; Northern taiga soils; Northern Yakutia; Seasonal thawing; Soil cover heterogeneity; Temperature regime of soil; Tundra soils
学科领域	boreal forest; heterogeneity; loam; soil cover; soil profile; soil temperature; thawing; tundra soil; water content; Russian Federation; Sakha
语种	英语
scopus关键词	boreal forest; heterogeneity; loam; soil cover; soil profile; soil temperature; thawing; tundra soil; water content; Russian Federation; Sakha
来源期刊	Earth's Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119162
作者单位	Institute of Physicochemical and Biological Problems in Soil Science, RAS, 2, Institutskaya str., Pushchino, Moscow region, 142290, Russian Federation; North-Eastern Science Station, Pacific Geographical Institute, FEB RAS, P/O box 18, Cherskiy Village, Nizhnekolymskiy Region, Yakutia, 678830, Russian Federation
推荐引用方式 GB/T 7714	Fedoryov-Davydov D.G.,Davydov S.P.,Davydova A.I.,et al. The thermal state of soils in Northern Yakutia[J],2018,22(3).
APA	Fedoryov-Davydov D.G..,Davydov S.P..,Davydova A.I..,Shmelev D.G..,Ostroymov V.E..,...&Sorokovikov V.A..(2018).The thermal state of soils in Northern Yakutia.Earth's Cryosphere,22(3).
MLA	Fedoryov-Davydov D.G.,et al."The thermal state of soils in Northern Yakutia".Earth's Cryosphere 22.3(2018).