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Antecedent moisture content and aging duration effects on seal formation and erosion in smectitic soils
Year:
2006
Authors :
Levy, Guy
;
.
Mamedov, Amrakh
;
.
Volume :
70
Co-Authors:
Mamedov, A.I., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization (ARO), Volcani Center, P.O. Box 6, Bet-Dagan 50-250, Israel, National Soil Erosion Research Lab., USDA-ARS-MWA, West Lafayette, IN 47907, United States
Huang, C., National Soil Erosion Research Lab., USDA-ARS-MWA, West Lafayette, IN 47907, United States
Levy, G.J., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization (ARO), Volcani Center, P.O. Box 6, Bet-Dagan 50-250, Israel
Facilitators :
From page:
832
To page:
843
(
Total pages:
12
)
Abstract:
Soil susceptibility to seal formation and erosion depends on its inherent properties and surface conditions. Our objective was to study the interaction of two different surface conditions, antecedent moisture content (AMC) and aging duration, on seal formation and erosion in four smectitic soils. Soil samples were packed in trays and wetted with different amounts of water (0, 1, 2, 3, 4, 6, 8, or 16 mm) with a mist type rain. The wetted samples were put in plastic bags and allowed to age for 0.01, 1, 3, or 7 d. The soil trays were exposed to 60 mm of distilled water rain of high energy. At no aging (0.01 d), runoff volume (a measure for seal development) and soil loss increased with an increase in AMC mainly because of enhanced slaking. In general, runoff and soil loss decreased with the increase in aging duration. For instance, in the Clay (Y) soil, to which 3 mm of water was added, as aging increased from 1 to 7 d, runoff decreased from 39 to 28 mm, and soil loss decreased from 660 to 397 g m 2. For any given aging duration, the smallest runoff volume and soil loss were obtained at the intermediate AMC levels (2, 3, and 4 mm of water added); at this AMC range, increasing aging time resulted in up to 40% decrease in runoff or soil loss. The effects of aging at these AMC levels (generally between wilting point and field capacity [i.e., pF 4.1-2.4]) were significantly more pronounced for clay soils probably because at these AMCs water-filled pores in the clay fabric were considered active in the stabilization process and the development of cohesive bonds between and within particles during the aging period. Soil erosion changed with the increase in aging duration in a manner similar to runoff, suggesting that runoff was the main precursor to erosion under these conditions. © Soil Science Society of America.
Note:
Related Files :
aging
Aging of materials
Erosion
Pore pressure
rainfall
runoff
Seal
Smectitic soils
soil moisture
Soils
Wetting
Show More
Related Content
More details
DOI :
10.2136/sssaj2004.0391
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
24356
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:06
Scientific Publication
Antecedent moisture content and aging duration effects on seal formation and erosion in smectitic soils
70
Mamedov, A.I., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization (ARO), Volcani Center, P.O. Box 6, Bet-Dagan 50-250, Israel, National Soil Erosion Research Lab., USDA-ARS-MWA, West Lafayette, IN 47907, United States
Huang, C., National Soil Erosion Research Lab., USDA-ARS-MWA, West Lafayette, IN 47907, United States
Levy, G.J., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization (ARO), Volcani Center, P.O. Box 6, Bet-Dagan 50-250, Israel
Antecedent moisture content and aging duration effects on seal formation and erosion in smectitic soils
Soil susceptibility to seal formation and erosion depends on its inherent properties and surface conditions. Our objective was to study the interaction of two different surface conditions, antecedent moisture content (AMC) and aging duration, on seal formation and erosion in four smectitic soils. Soil samples were packed in trays and wetted with different amounts of water (0, 1, 2, 3, 4, 6, 8, or 16 mm) with a mist type rain. The wetted samples were put in plastic bags and allowed to age for 0.01, 1, 3, or 7 d. The soil trays were exposed to 60 mm of distilled water rain of high energy. At no aging (0.01 d), runoff volume (a measure for seal development) and soil loss increased with an increase in AMC mainly because of enhanced slaking. In general, runoff and soil loss decreased with the increase in aging duration. For instance, in the Clay (Y) soil, to which 3 mm of water was added, as aging increased from 1 to 7 d, runoff decreased from 39 to 28 mm, and soil loss decreased from 660 to 397 g m 2. For any given aging duration, the smallest runoff volume and soil loss were obtained at the intermediate AMC levels (2, 3, and 4 mm of water added); at this AMC range, increasing aging time resulted in up to 40% decrease in runoff or soil loss. The effects of aging at these AMC levels (generally between wilting point and field capacity [i.e., pF 4.1-2.4]) were significantly more pronounced for clay soils probably because at these AMCs water-filled pores in the clay fabric were considered active in the stabilization process and the development of cohesive bonds between and within particles during the aging period. Soil erosion changed with the increase in aging duration in a manner similar to runoff, suggesting that runoff was the main precursor to erosion under these conditions. © Soil Science Society of America.
Scientific Publication
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