Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR023673 |
Soil Physical, Hydraulic, and Thermal Properties in Interior Alaska, USA: Implications for Hydrologic Response to Thawing Permafrost Conditions | |
Ebel, Brian A.1; Koch, Joshua C.2; Walvoord, Michelle A.1 | |
2019-05-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:5页码:4427-4447 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Boreal forest regions are a focal point for investigations of coupled water and biogeochemical fluxes in response to wildfire disturbances, climate warming, and permafrost thaw. Soil hydraulic, physical, and thermal property measurements for mineral soils in permafrost regions are limited, despite substantial influences on cryohydrogeologic model results. This work expands mineral soil property quantification in cold regions through soil characterization from the discontinuous permafrost zone of interior Alaska, USA. Values extend beyond the range of prior measurement magnitudes in analogous regions, highlighting the importance of this data set. Rocky and silty upland soil landscape classifications and wildfire disturbance provided guiding frameworks for the sampling and analysis for potential implications for the hydrologic response to thawing permafrost. Bulk density (rho(b)), soil organic matter, soil-particle size distributions (sand, silt, and gravel fractions), and soil hydraulic properties of van Genuchten parameters alpha and N had moderate evidence of differences between silty and rocky classifications. Burned and unburned sites had only moderate evidence of differences for silt fraction. Field-saturated hydraulic conductivity (K-fs) was more variable at burned sites compared to unburned sites, which corresponded to observations of greater rooting depths at burned sites and observations of root paths in soil cores for K-fs measurement. Soil thermal properties suggested that gravel content may reduce the accuracy of commonly used estimation methods for thermal conductivity. This work provides soil parameter constraints necessary for hypothesis testing and site-specific prediction with cryohydrogeologic models to examine controls on active layer and permafrost dynamics in upland boreal forests. |
英文关键词 | interior Alaska permafrost soil hydraulic properties Arctic boreal forest preferential flow |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000474848500045 |
WOS关键词 | BOREAL CATCHMENT UNDERLAIN ; ROOT-GROWTH ; PREFERENTIAL FLOW ; CLIMATE-CHANGE ; DISCONTINUOUS PERMAFROST ; NORTHERN ALASKA ; SUBSURFACE FLOW ; ORGANIC-MATTER ; ACTIVE LAYER ; WATER |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/183153 |
专题 | 资源环境科学 |
作者单位 | 1.US Geol Survey, Water Cycle Branch, Water Miss Area, Lakewood, CO 80225 USA; 2.US Geol Survey, Alaska Sci Ctr, Anchorage, AK USA |
推荐引用方式 GB/T 7714 | Ebel, Brian A.,Koch, Joshua C.,Walvoord, Michelle A.. Soil Physical, Hydraulic, and Thermal Properties in Interior Alaska, USA: Implications for Hydrologic Response to Thawing Permafrost Conditions[J]. WATER RESOURCES RESEARCH,2019,55(5):4427-4447. |
APA | Ebel, Brian A.,Koch, Joshua C.,&Walvoord, Michelle A..(2019).Soil Physical, Hydraulic, and Thermal Properties in Interior Alaska, USA: Implications for Hydrologic Response to Thawing Permafrost Conditions.WATER RESOURCES RESEARCH,55(5),4427-4447. |
MLA | Ebel, Brian A.,et al."Soil Physical, Hydraulic, and Thermal Properties in Interior Alaska, USA: Implications for Hydrologic Response to Thawing Permafrost Conditions".WATER RESOURCES RESEARCH 55.5(2019):4427-4447. |
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