THE STUDY OF MECHANISM OF PREFERENTIAL FLOW OF OLUTE WITH AND WITHOUT MACROPORES ON TWO DIFFERENT FLUXES RATE

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AMIRI F.; SHORAFA M.; LIAGHAT A.; MOHAMMADI M.H.

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Paper Information

Journal: Iranian Journal of Irrigation and Drainage Year:2008 | Volume:2 | Issue:2 Page(s): 73-80

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Title

THE STUDY OF MECHANISM OF PREFERENTIAL FLOW OF OLUTE WITH AND WITHOUT MACROPORES ON TWO DIFFERENT FLUXES RATE

Author(s)

AMIRI F. | SHORAFA M. | LIAGHAT A. | MOHAMMADI M.H. | Issue Writer Certificate

Keywords

PREFERENTIAL FLOWQ2

BREAK THROUGH CURVESQ3

MACROPOREQ2

NITRATE IONQ3

FLUX AND PEAKQ3

Abstract

The prediction of transport flux process in soil is important and vitual in many of soil science branches and environmental. PREFERENTIAL FLOW is one of the mechanism of water and solute transport in soil. These pathways are created by movement of earthworms or decomposion of roots or swelling and shrinkage of soils. The aim of this research is the study of preferentially flow of NITRATE ION in soil with and without MACROPOREs under two water fluxes of 0.3 Ks and 0.7 Ks (Ks is hydraulic conductivity of saturated soil). For this purpose two kinds of soils, loamy and sandy clay soils were chosen. Disturbed column soil with 30cm hight and 20cm diameter were prepared. The bulk density of soil in columns were as the same as undisturbed soils, 16 columns of soils were prepared, the treatments were 2 different soil textures. 2 water fluxes, with and without MACROPOREs with 2 replicates. The resukt showed that in soil columns without MACROPOREs BTCs had only one peak which means PREFERENTIAL FLOW did not occure in both soils. But in columns with MACROPOREs, PREFERENTIAL FLOWs occurred and two peaks appearrrred. The first one showed preferentially movement of NITRATE ION through MACROPOREs and the second one showed nitrate transportation among soil matrix. Increasing flixes from 0.3 Ks to 0.7 Ks, the PREFERENTIAL FLOW increases. But some times in sandy clay loam soil PREFERENTIAL FLOW did not occure. Probably it is due to collapsing of MACROPOREs and sealing of these pores.

Cites

LABORATORY STUDY OF THE INFLUENCE OF CONTINUOUS AND NON-CONTINUOUS MACROPORE LAYERS ON SOLUTE TRANSPORT IN SOIL

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APA: Copy

AMIRI, F., SHORAFA, M., LIAGHAT, A., & MOHAMMADI, M.H.. (2008). THE STUDY OF MECHANISM OF PREFERENTIAL FLOW OF OLUTE WITH AND WITHOUT MACROPORES ON TWO DIFFERENT FLUXES RATE. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, 2(2), 73-80. SID. https://sid.ir/paper/131445/en

Vancouver: Copy

AMIRI F., SHORAFA M., LIAGHAT A., MOHAMMADI M.H.. THE STUDY OF MECHANISM OF PREFERENTIAL FLOW OF OLUTE WITH AND WITHOUT MACROPORES ON TWO DIFFERENT FLUXES RATE. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE[Internet]. 2008;2(2):73-80. Available from: https://sid.ir/paper/131445/en

IEEE: Copy

F. AMIRI, M. SHORAFA, A. LIAGHAT, and M.H. MOHAMMADI, “THE STUDY OF MECHANISM OF PREFERENTIAL FLOW OF OLUTE WITH AND WITHOUT MACROPORES ON TWO DIFFERENT FLUXES RATE,” IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, vol. 2, no. 2, pp. 73–80, 2008, [Online]. Available: https://sid.ir/paper/131445/en

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