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| Publication Type:
| Report |
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| Author(s): | Dixon, Robert M.;
Carr, Ann B. |
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| Author Affiliation: | The Imprinting Foundation, Tucson, AZ |
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| Title: | Infiltration regulation for erosion control: Principles and practices |
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| Column Name: | Methods and techniques
Other records with the "Methods and techniques" Column
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| Section: | Technical papers
Other records with the "Technical papers" Section
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| Meeting Info.: | Nashville, TN: February 25-28, 1997 |
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| Source: | International Erosion Control Association Proceedings 28:Erosion Control and the Environment...Working in Harmony. February 1997, p. 153-164. |
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| Publishing Information: | Steamboat Springs, CO: International Erosion Control Association |
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| # of Pages: | 12 |
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| Keywords: | TIC Keywords: Infiltration; Erosion control; Soil texture; Porosity; Land reclamation; Planting; Technology
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| Abstract/Contents: | "This paper traces the course of research conducted by the senior author and several coworkers beginning in 1960 and continuing to the present time. A review of water infiltration literature and some infiltrometer trials in the early sixties led to the formulation of the Air-Earth-Intercept (AEI) Concept for water infiltration into initially dry soil which states that the microroughness and macroporosity of the AEI regulate the exchange of surface water and displaced soils air across the AEI with the rough open interface having very high exchange rates and with the smooth closed interface having very low rates. This concept was supported and verified by a series of sprinkling infiltrometer studies, wherein manipulation of surface microroughness and macroporosity gave an order-of-magnitude control over water infiltration. A tenfold increase in infiltration is enough to prevent water runoff even from high intensity storms, thereby eliminating soil erosion. The infiltration role of displaced soil air was verified by using border-irrigation and closed-top infiltrometers to demonstrate that very small soil air pressures could greatly reduce infiltration by blocking downward water flow in macropores. The next step was to apply the AEI Infiltration Concept to controlling erosion on degraded land areas through infiltration acceleration and revegetation. What was needed was a device or machine that would efficiently restore stable roughness and openness to the smooth sealed AEI of degraded land to, in turn, restore the high rates of rainwater infiltration required for erosion control and successful revegetation. This led to the invention and development of a series of land imprinting devices. By efficiently controlling infiltration and erosion, these devices have already restored perennail grasses to 20,000 hectares of degraded rangeland in southern Arizona alone. With the successful development of land imprinting, the AEI concept evolved into the AEI model for restoring degraded land through infiltration and erosion control. This diagrammatic and verbal model of four AEI processes helps guide revegetation projects to successful completion. Currently, imprinters are being developed for steep-slope revegetation. Imprinter attachements for seeding and inoculationg with mycorrhizae have already been developed and successfully field tested." |
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| Language: | English |
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| References: | 25 |
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| Note: | Pictures, b/w
Figures |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Dixon, R. M., and A. B. Carr. 1997. Infiltration regulation for erosion control: Principles and practices. Int. Erosion Control Assoc. Proc. p. 153-164. |
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MSU catalog number: S 622.2 .I58 1997 |
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