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Quantification of soil macroporosity and its relationship with soil properties
Authors: S.N. Asarc. R.P. Rudra, W.T. Dickinson and A. Fenster
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Download file: https://library.csbe-scgab.ca/docs/journal/41/41_1_23_ocr.pdf
Published in: CBE Journal » CBE Journal Volume 41 (1999)
Download RAW file: https://library.csbe-scgab.ca/docs/journal/41/41_1_23_raw.pdf
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Description: Image analysis was used to estimate macroporosity (pores ~ 0.54 mm in diameter) of undisturbed soil columns obtained from a field under no-till for 5 years. A high resolution x-ray Image Intensifier (XRII)-based CT scanner was used to investigate soil macroporosity at different depths in the soil column. Total macroporosity in the Aand Bhorizons averaged 3.70 and 1.94%, respectively, and was consistently lower in the B-horizon. The relative contributions of macroporosity to the total porosity in the A and B horizons were 7.76 and 4.92%, respectively. There was a statistically significant decreasing trend of macroporosity through the combined A and B horizon depth (0 - 400 mm) and in the A horizon (depth 0 - 200 mm), but not in the B-horizon (depth 200 - 400 mm). Saturated hydraulic conductivity correlated significantly with the total macroporosity of the Aand the B horizons, within the A horizon, bulk density also significantly correlating with total macroporosity. Keywords: bulk density, computer tomography, image analysis, macroporosity, hydraulic conductivity, no-till.
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Citation: S.N. Asarc. R.P. Rudra, W.T. Dickinson and A. Fenster 1999. QUANTIFICATION OF SOIL MACROPOROSITY AND ITS RELATIONSHIP WITH SOIL PROPERTIES. Canadian Agricultural Engineering 41(1):23-34.
Volume: 41
Issue: 1
Pages -
Contributor:
Date: 1999
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Type: Text.Article
Format: PDF
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Coverage: Canada
Language 1: en
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Rights: Canadian Society for Bioengineering
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DOI:
Description: Image analysis was used to estimate macroporosity (pores ~ 0.54 mm in diameter) of undisturbed soil columns obtained from a field under no-till for 5 years. A high resolution x-ray Image Intensifier (XRII)-based CT scanner was used to investigate soil macroporosity at different depths in the soil column. Total macroporosity in the Aand Bhorizons averaged 3.70 and 1.94%, respectively, and was consistently lower in the B-horizon. The relative contributions of macroporosity to the total porosity in the A and B horizons were 7.76 and 4.92%, respectively. There was a statistically significant decreasing trend of macroporosity through the combined A and B horizon depth (0 - 400 mm) and in the A horizon (depth 0 - 200 mm), but not in the B-horizon (depth 200 - 400 mm). Saturated hydraulic conductivity correlated significantly with the total macroporosity of the Aand the B horizons, within the A horizon, bulk density also significantly correlating with total macroporosity. Keywords: bulk density, computer tomography, image analysis, macroporosity, hydraulic conductivity, no-till.
Keywords:
Résumé:
Mots-clés:
Citation: S.N. Asarc. R.P. Rudra, W.T. Dickinson and A. Fenster 1999. QUANTIFICATION OF SOIL MACROPOROSITY AND ITS RELATIONSHIP WITH SOIL PROPERTIES. Canadian Agricultural Engineering 41(1):23-34.
Volume: 41
Issue: 1
Pages -
Contributor:
Date: 1999
Technical field:
Conference name:
Session name:
Other information:
Type: Text.Article
Format: PDF
Publication type:
Source:
Relation:
Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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