Geophysical Methods for Field-Scale Imaging of Root Zone Properties and Processes
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| Title: | Main Title: Geophysical Methods for Field-Scale Imaging of Root Zone Properties and Processes |
| Description: | Abstract: Geophysical methods offer the possibility to image noninvasively three-dimensional subsurface structures of soil properties and associated flow and transport processes at spatial scales ranging from soil columns to whole field plots. Measured geophysical properties can be related to soil state variables, such as soil moisture and salt concentration, soil properties, such as clay content, and root properties, such as root mass and surface area. Because of their noninvasive nature, time lapse geophysical measurements can be used to monitor spatial patterns of processes such as water flow, root water uptake, and solute transport in soils. Geophysical methods have also been used to detect the presence of roots and to characterize the architecture, distribution and density of roots. Exciting research questions dealing with the feedback between vegetation, soil heterogeneity and soil moisture patterns, such as row-inter row variations, effects of three-dimensional root system of trees, redistribution of rainfall by canopies and stem flow, re-infiltration of runoff in vegetated patches, could all be addressed using geophysical methods. In this contribution, we give an overview of geophysical methods that show the greatest promise in plant-root related research: electrical resistivity tomography (ERT), electrical impedance spectroscopy and tomography (EIT), and ground penetrating radar (GPR). For each method, we discuss the geoelectrical (soil) properties they measure, their relation to soil state variables and properties, and their ability to directly detect roots. We will also present examples of applications of these methods to noninvasively study soil–root interactions. |
| Identifier: | 10.2136/sssaspecpub61.c12 (DOI) |
Responsible Party
| Creators: | Jan Vanderborght (Author), Johan A. Huisman (Author), Jan van der Kruk (Author), Harry Vereecken (Author) |
| Publisher: | Soil Science Society of America |
| Publication Year: | 2013 |
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File Details
| Filename: | 2013_Vanderborght_SSSA_Metadata |
| Data Type: | Text - Book Section |
| File Size: | Unknown |
| Date: | Issued: 30.07.2013 |
| Mime Type: | Unknown |
| Language: | English |
| Status: | Completed |
Constraints
| Download Permission: | Only Project Members |
| General Access and Use Conditions: | For internal use only |
| Access Limitations: | For internal use only |
| Licence: | [TR32DB] Data policy agreement |
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Specific Information - Publication
| Publication Status: | Published |
| Review Status: | Peer reviewed |
| Publication Type: | Book Section |
| Book Title: | Soil–Water–Root Processes: Advances in Tomography and Imaging |
| Editors: | Stephen H. Anderson, Jan W. Hopmans |
| Series Title: | SSSA Special Publication |
| City: | Madison, USA |
| Chapter: | 12 |
| Volume: | 61 |
| Number of Pages: | 36 (247 - 282) |
Metadata Details
| Metadata Creator: | Jan Vanderborght |
| Metadata Created: | 10.12.2013 |
| Metadata Last Updated: | 11.05.2021 |
| Subproject: | B4 |
| Funding Phase: | 2 |
| Metadata Language: | English |
| Metadata Version: | V50 |
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| Page Visits: | 1018 |
| Metadata Downloads: | 0 |
| Dataset Downloads: | 0 |
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