scholarly journals Preferential Flow Effects on NO3-N Losses with Tile Flow

2013 ◽  
Author(s):  
A. Bakhsh ◽  
R. S. Kanwar ◽  
D. B. Jaynes ◽  
T. S. Colvin ◽  
and L. R. Ahuja
Keyword(s):  
Preferential Flow ◽  
N Losses ◽  
Flow Effects ◽  
Tile Flow

Ponded infiltration into soil with biopores — field experiment and modeling

Biologia ◽  
2009 ◽  
Vol 64 (3) ◽  
Author(s):  
Michal Dohnal ◽  
Jaromír Dušek ◽  
Tomáš Vogel ◽  
Milena Císlerová ◽  
Ľubomír Lichner ◽  
...  
Keyword(s):  
Water Flow ◽  
Preferential Flow ◽  
Water Pressure ◽  
Three Dimensional ◽  
Detailed Knowledge ◽  
Dye Tracer ◽  
Simulation Based ◽  
Flow Through ◽  
Flow Effects ◽  
Infiltration Experiment

AbstractPreferential movement of water in macropores plays an important role when the process of ponded infiltration in natural porous systems is studied. For example, the detailed knowledge of water flow through macropores is of a major importance when predicting runoff responses to rainfall events. The main objectives of this study are to detect preferential movement of water in Chernozem soil and to employ numerical modeling to describe the variably saturated flow during a field ponded infiltration experiment. The infiltration experiment was performed at the Macov experimental station (Calcari-Haplic Chernozem in Danubian Lowland, Slovakia). The experiment involved single ring ponded infiltration. At the quasi steady state phase of the experiment dye tracer was added to the infiltrating water. Then the soil profile was excavated and the penetration pattern of the applied tracer was recorded. The abundance of biopores as a product of fauna and flora was found. To quantify the preferential flow effects during the infiltration experiment, three-dimensional axisymmetric simulations were carried out by a two-dimensional dual-continuum numerical model. The water flow simulations based on measured hydraulic characteristics without consideration of preferential flow effects failed to describe the infiltration experiment adequately. The 3D axisymmetric simulation based on dual-permeability approach provided relatively realistic space-time distribution of soil water pressure below the infiltration ring.

Preferential Flow Effects on Infiltration and Runoff in Grassland and Forest Soils

2011 ◽  
Vol 10 (1) ◽  
pp. 367-377 ◽  
Author(s):  
A. Alaoui ◽  
U. Caduff ◽  
H.H. Gerke ◽  
R. Weingartner
Keyword(s):  
Forest Soils ◽  
Preferential Flow ◽  
Flow Effects

Preferential Flow Effects on Subsurface Contaminant Transport in Alluvial Floodplains

2010 ◽  
Vol 53 (1) ◽  
pp. 127-136 ◽  
Author(s):  
D. M. Heeren ◽  
R. B. Miller ◽  
G. A. Fox ◽  
D. E. Storm ◽  
T. Halihan ◽  
...  
Keyword(s):  
Contaminant Transport ◽  
Preferential Flow ◽  
Flow Effects ◽  
Alluvial Floodplains

Determination of Concentration and Preferential Flow Effects on Pesticide Fate and Transport in Soil

1992 ◽  
Author(s):  
Robert Bowman ◽  
Zev Gerstl ◽  
Herman Bouwer ◽  
Bruno Yaron ◽  
Dan Jaynes ◽  
...  
Keyword(s):  
Preferential Flow ◽  
Fate And Transport ◽  
Flow Effects
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