Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.2136/vzj2007.0159 |
Rapid Measurement of Field-Saturated Hydraulic Conductivity for Areal Characterization | |
Nimmo, John R.; Schmidt, Kevin M.; Perkins, Kim S.; Stock, Jonathan D. | |
通讯作者 | Nimmo, John R. |
来源期刊 | VADOSE ZONE JOURNAL
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ISSN | 1539-1663 |
出版年 | 2009 |
卷号 | 8期号:1页码:142-149 |
英文摘要 | To provide an improved methodology for characterizing the field-saturated hydraulic conductivity (K(fs)) over broad areas with extreme spatial variability and ordinary limitations oftime and resources, we developed and tested a simplified apparatus and procedure, correcting mathematically for the major deficiencies of the simplified implementation. The methodology includes use of a portable, falling-head, small-diameter (similar to 20 cm) single-ring infiltrometer and an analytical formula for K(fs) that compensates both for nonconstant falling head and for the subsurface radial spreading that unavoidably occurs with small ring size. We applied this method to alluvial fan deposits varying in degree of pedogenic maturity in the arid Mojave National Preserve, California. The measurements are consistent with a more rigorous and time-consuming K(fs) measurement method, produce the expected systematic trends in K(fs) when compared among soils of contrasting degrees of pedogenic development, and relate in expected ways to results of widely accepted methods. |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000263915100015 |
WOS关键词 | STEADY-STATE INFILTRATION ; RING INFILTROMETERS ; TENSION INFILTROMETER ; PONDED INFILTRATION ; SOIL ; WATER ; FLOW ; DESIGN ; AIR |
WOS类目 | Environmental Sciences ; Soil Science ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Agriculture ; Water Resources |
来源机构 | United States Geological Survey |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/162766 |
作者单位 | US Geol Survey, Menlo Pk, CA 94025 USA |
推荐引用方式 GB/T 7714 | Nimmo, John R.,Schmidt, Kevin M.,Perkins, Kim S.,et al. Rapid Measurement of Field-Saturated Hydraulic Conductivity for Areal Characterization[J]. United States Geological Survey,2009,8(1):142-149. |
APA | Nimmo, John R.,Schmidt, Kevin M.,Perkins, Kim S.,&Stock, Jonathan D..(2009).Rapid Measurement of Field-Saturated Hydraulic Conductivity for Areal Characterization.VADOSE ZONE JOURNAL,8(1),142-149. |
MLA | Nimmo, John R.,et al."Rapid Measurement of Field-Saturated Hydraulic Conductivity for Areal Characterization".VADOSE ZONE JOURNAL 8.1(2009):142-149. |
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