SSSA Special Publications · 2015
Effects of Root-Induced Biopores on Pore Space Architecture Investigated with Industrial X-Ray Computed Tomography
Pagenkemper, S. K., Peth, S., Puschmann, D. U., Horn, R.
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Effects of Root-Induced Biopores on Pore Space Architecture …
Abstract
Over the last decade, the application of X-ray computed tomography (CT) in soil science showed rapid improvement in terms of image quality and acquisition time. Its noninvasive nature in combination with sophisticated image analysis tools provides excellent opportunities to study soil‒water‒root processes at various scales. In this chapter, we show examples, demonstrating the possibilities of X-ray CT analysis for a qualitative/visual and quantitative evaluation of root-induced structure formation. Soil samples ranging in size from large monoliths (20-cm diameter, 70-cm height) to small cores (5.1-cm diameter, 4.4-cm height) were collected from a Haplic Luvisol (Hypereutic, Siltic) from loess of an experimental field trial with various preceding crops [Medicago sativa L. subsp. sativa (alfalfa), Cichorium intybus L. (chicory), and Festuca arundinacea Schreb. (fescue)]. Morphological and topological parameters, such as pore volume size distribution, biopore surface area, and properties of the network skeleton (path length, diameter, and tortuosity), were calculated and used to assess how root-induced biopores of the different preceding crops modify pore space architectures.
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Over the last decade, the application of X-ray computed tomography (CT) in soil science showed rapid improvement in terms of image quality and acquisition time. Its noninvasive nature in combination with sophisticated image analysis tools provides excellent opportunities to study soil‒water‒root processes at various scales. In this chapter, we show examples, demonstrating the possibilities of X-ray CT analysis for a qualitative/visual and quantitative evaluation of root-induced structure formation. Soil samples ranging in size from large monoliths (20-cm diameter, 70-cm height) to small cores (5.1-cm diameter, 4.4-cm height) were collected from a Haplic Luvisol (Hypereutic, Siltic) from loess of an experimental field trial with various preceding crops [Medicago sativa L. subsp. sativa (alfalfa), Cichorium intybus L. (chicory), and Festuca arundinacea Schreb. (fescue)]. Morphological and topological parameters, such as pore volume size distribution, biopore surface area, and properties of the network skeleton (path length, diameter, and tortuosity), were calculated and used to assess how root-induced biopores of the different preceding crops modify pore space architectures.
Over the last decade, the application of X-ray computed tomography (CT) in soil science showed rapid improvement in terms of image quality and acquisition time. Its noninvasive nature in combination with sophisticated image analysis tools provides excellent opportunities to study soil‒water‒root processes at various scales. In this chapter, we show examples, demonstrating the possibilities of X-ray CT analysis for a qualitative/visual and quantitative evaluation of root-induced structure formation. Soil samples ranging in size from large monoliths (20-cm diameter, 70-cm height) to small cores (5.1-cm diameter, 4.4-cm height) were collected from a Haplic Luvisol (Hypereutic, Siltic) from loess of an experimental field trial with various preceding crops [Medicago sativa L. subsp. sativa (alfalfa), Cichorium intybus L. (chicory), and Festuca arundinacea Schreb. (fescue)]. Morphological and topological parameters, such as pore volume size distribution, biopore surface area, and properties of the network skeleton (path length, diameter, and tortuosity), were calculated and used to assess how root-induced biopores of the different preceding crops modify pore space architectures.
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