Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR023329 |
How Spatial Patterns of Soil Moisture Dynamics Can Explain Field-Scale Soil Moisture Variability: Observations From a Sodic Landscape | |
Peterson, A. M.1; Helgason, W. H.1,2; Ireson, A. M.1,3 | |
2019-05-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:5页码:4410-4426 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada |
英文摘要 | Root-zone soil moisture (0-110cm) was monitored at 21 sites within a cold-region semiarid prairie grazing pasture over multiple growing seasons. There were large differences in the moisture dynamics for different sites, which was related to local-scale impacts of sodium-induced clay dispersion. Sites with high exchangeable sodium percentages, indicative of sodic soils, were characterized by small changes in soil moisture storage. The sites with the largest soil moisture changes had negligible exchangeable sodium percentage. We used this difference to divide the area into sites that participate in the field-scale water balance and those that do not. As a result of this heterogeneity, a unique soil moisture variability-mean relationship was observed; the spatial variability of root-zone soil moisture was lowest during intermediate wetness conditions and highest for wet and dry conditions. Furthermore, the shape of the variability-mean relationship depended on the depth over which soil moisture was integrated. The persistent differences in soil moisture dynamics were also responsible for the presence of two distinct spatial patterns of root-zone soil moisture, representing early and late growing season (i.e., wet and dry conditions). The participating versus nonparticipating framework may be applicable broadly to sodic soils and to other soil types and has practical implications for parameterizing the water balance in hydrological models and for designing representative soil moisture monitoring networks in such environments. |
英文关键词 | soil moisture spatial variability sodicity |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000474848500044 |
WOS关键词 | SPATIOTEMPORAL VARIABILITY ; TEMPORAL DYNAMICS ; SOLONETZIC SOILS ; WATER ; IRRIGATION |
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/183152 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Saskatchewan, Global Inst Water Secur, Saskatoon, SK, Canada; 2.Univ Saskatchewan, Dept Civil Geol & Environm Engn, Saskatoon, SK, Canada; 3.Univ Saskatchewan, Sch Environm & Sustainabil, Saskatoon, SK, Canada |
推荐引用方式 GB/T 7714 | Peterson, A. M.,Helgason, W. H.,Ireson, A. M.. How Spatial Patterns of Soil Moisture Dynamics Can Explain Field-Scale Soil Moisture Variability: Observations From a Sodic Landscape[J]. WATER RESOURCES RESEARCH,2019,55(5):4410-4426. |
APA | Peterson, A. M.,Helgason, W. H.,&Ireson, A. M..(2019).How Spatial Patterns of Soil Moisture Dynamics Can Explain Field-Scale Soil Moisture Variability: Observations From a Sodic Landscape.WATER RESOURCES RESEARCH,55(5),4410-4426. |
MLA | Peterson, A. M.,et al."How Spatial Patterns of Soil Moisture Dynamics Can Explain Field-Scale Soil Moisture Variability: Observations From a Sodic Landscape".WATER RESOURCES RESEARCH 55.5(2019):4410-4426. |
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