Hydraulic conductivity and index of soil physical quality of a forest haplic arenosol
MAJA BRYK
Instytut Gleboznawstwa i Kształtowania Środowiska, Uniwersytet Przyrodniczy Lublinie, ul. Leszczyńskiego 7, 20-069 LublinAbstract
For a forest Haplic Arenosol the retention curve and saturated hydraulic conductivity were experimentally determined. On the basis of experimental data there were evaluated the parameters of a retention curve in accordance with van Genuchten model and then Dexter’s physical quality index. Next, the hydraulic conductivity for the full range of soil water potential and soil water content was calculated for each soil horizon using the Mualem model. Saturated hydraulic conductivity was not statistically differentiated throughout the soil profile, and its mean value was 180 µm s–1. Hydraulic conductivity radically decreased as the water content decreased, more slowly in the mineral horizons and more rapidly in the organic one. For the discussed sandy soil a high value of Dexter’s index of soil physical quality was not related to the existence of aggregate structure. The Dexter’s index should be tested further on a large group of sandy and organic soils.
Keywords:
Haplic Arenosol, hydraulic conductivity, Dexter’s soil quality indexReferences
Dexter A.R., 2004a. Soil physical quality. Part I: Theory, effects of soil texture, density, and organic matter, and effects on root growth. Geoderma, 120, 201–214.
Dexter A.R., 2004b. Soil physical quality. Part III: Unsaturated hydraulic conductivity and general conclusions about S-theory. Geoderma, 120, 227–239.
Hasegawa S., Sato T., 1985. Soil water movement in the vicinity of soybean roots determined by root plane experiments. Transactions of JSIDRE, 117, 17–24.
Head K.H., 1998. Manual of soil laboratory testing. Vol. 3: Effective stress tests, Chichester, Wiley, 442 ss.
Kaczyński R., 1998. Przewodność hydrauliczna. [W:] Właściwości gruntów nienasyconych, red. B. Grabowska-Olszewska, Wyd. Nauk. PWN, Warszawa, 190–196.
Li Y., Wallach R., Cohen Y., 2002. The role of soil hydraulic conductivity on the spatial and temporal variation of root water uptake in drip-irrigated corn. Plant and Soil, 243, 131–142.
Lipiec J., 1983. Możliwości oceny przewodnictwa wodnego gleb na podstawie ich niektórych właściwości. Probl. Agrof., 40, 1–63.
Luckner L, van Genuchten M.Th., Nielsen D.R, 1989. A consistent set of parametric models for the two-phase flow of immiscible fluids in the subsurface. Water Resour. Res., 25, 2187–2193.
Mualem Y., 1976. A new model for predicting the hydraulic conductivity of unsaturated porous media. Water Resour. Res., 12, 513–522.
Pazdro Z., Kozerski B., 1990. Hydrogeologia ogólna. Wyd. Geologiczne, Warszawa, 623 ss.
PN-R-04032, 1998. Gleby i utwory mineralne. Pobieranie próbek i oznaczanie składu granulometrycznego. PKN.
Polak A., Wallach R., 2001. Analysis of soil moisture variations in an irrigated orchard root zone. Plant and Soil, 233, 145–159.
Van Genuchten M.Th., 1980. A closed-form equation for predicting the hydraulic conductivity of unsaturated soils. Soil Sci. Soc. Amer. J., 44, 892–898.
Van Genuchten M.Th, Nielsen D.R., 1985. On describing and predicting the hydraulic properties of unsaturated soils. Ann. Geoph., 3, 615–628.
Van Genuchten M.Th., Leij F.J., Yates S.R., 1991. The RECT code for quantifying the hydraulic functions of unsaturated soils EPA/600/2-91/065.
Instytut Gleboznawstwa i Kształtowania Środowiska, Uniwersytet Przyrodniczy Lublinie, ul. Leszczyńskiego 7, 20-069 Lublin
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