气候变化领域集成服务门户(CCPortal): Empirical Models for Predicting Water and Heat Flow Properties of Permafrost Soils

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DOI	10.1029/2020GL087646
	Empirical Models for Predicting Water and Heat Flow Properties of Permafrost Soils
	O'Connor M.T.; Cardenas M.B.; Ferencz S.B.; Wu Y.; Neilson B.T.; Chen J.; Kling G.W.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:11
英文摘要	Warming and thawing in the Arctic are promoting biogeochemical processing and hydrologic transport in carbon-rich permafrost and soils that transfer carbon to surface waters or the atmosphere. Hydrologic and biogeochemical impacts of thawing are challenging to predict with sparse information on arctic soil hydraulic and thermal properties. We developed empirical and statistical models of soil properties for three main strata in the shallow, seasonally thawed soils above permafrost in a study area of ~7,500 km2 in Alaska. The models show that soil vertical stratification and hydraulic properties are predictable based on vegetation cover and slope. We also show that the distinct hydraulic and thermal properties of each soil stratum can be predicted solely from bulk density. These findings fill the gap for a sparsely mapped region of the Arctic and enable regional interpolation of soil properties critical for determining future hydrologic responses and the fate of carbon in thawing permafrost. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Biogeochemistry; Carbon; Thawing; Thermodynamic properties; Biogeochemical; Empirical model; Hydraulic properties; Hydrologic response; Soil property; Soil stratum; Vegetation cover; Vertical stratification; Permafrost; empirical analysis; heat flow; interpolation; permafrost; prediction; soil structure; soil temperature; soil water; stratification; thawing; vegetation cover; warming; Alaska; United States; Calluna vulgaris
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170311
作者单位	Department of Geological Sciences, The University of Texas at Austin, Austin, TX, United States; Department of Aerospace Engineering and Engineering Mechanics, The University of Texas at Austin, Austin, TX, United States; Department of Civil Engineering, Utah State University, Logan, UT, United States; Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI, United States
推荐引用方式 GB/T 7714	O'Connor M.T.,Cardenas M.B.,Ferencz S.B.,et al. Empirical Models for Predicting Water and Heat Flow Properties of Permafrost Soils[J],2020,47(11).
APA	O'Connor M.T..,Cardenas M.B..,Ferencz S.B..,Wu Y..,Neilson B.T..,...&Kling G.W..(2020).Empirical Models for Predicting Water and Heat Flow Properties of Permafrost Soils.Geophysical Research Letters,47(11).
MLA	O'Connor M.T.,et al."Empirical Models for Predicting Water and Heat Flow Properties of Permafrost Soils".Geophysical Research Letters 47.11(2020).