نتایج جستجو برای: pedotransfer functions

تعداد نتایج: 490748  

Journal: :Journal of Hydrology and Hydromechanics 2021

Abstract The determination of soil hydraulic properties is important in several environmental sciences but may be expensive and time consuming. Therefore, during the last decades, a great effort has been made to develop relatively easy, robust, inexpensive methods for characterization. In this manuscript, we reviewed discussed different infiltrometer techniques light available experimental appl...

2012
J. Moeys M. Larsbo L. Bergström C. D. Brown N. J. Jarvis

Estimating pesticide leaching risks at the regional scale requires the ability to completely parameterise a pesticide fate model using only survey data, such as soil and land-use maps. Such parameterisations usually rely on a set of lookup tables and (pedo)transfer functions, relating elementary soil and site properties to model parameters. The aim of this paper is to describe and test a comple...

Journal: :مدیریت آب و آبیاری 0
مجید هماپور گورابجیری دانشجوی سابق علوم خاک، دانشکدۀ فناوری کشاورزی، دانشگاه محقق اردبیلی علی رسول زاده استادیار گروه مهندسی آب دانشکدۀ فناوری کشاورزی دانشگاه محقق اردبیلی

soil water retention curve is one of the crucial input parameters in any modeling study on water flow and solute transport in soils. direct measurement of soil water retention curve is time-consuming and costly. alternatively, pedotransfer functions (ptfs) may be used to indirectly estimate the soil water retention curve from easily measured soil properties. many equations for the soil water re...

Journal: :Water 2021

This study was undertaken to develop new pedotransfer functions (PTFs) for the estimation of soil moisture content at field capacity (FC, −33 kPa) and permanent wilting point (PWP, −1500 South African soils based on easily measurable physico-chemical properties. The PTFs were developed using stepwise multiple linear regressions with dependent variable (either FC or PWP) against clay, silt, sand...

2004
R. W. Vervoort C. Glendenning

Deep drainage (DD) is recognised as one of the main drivers for dryland and irrigated salinity. Review of the literature on risk and hazard highlights few Australian studies on assessing DD risk and the need to develop new methods for determining DD risk. This study developed a method to map DD risk for the Northern Murray Darling Basin Catchment of the Border Rivers. Deep drainage was predicte...

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