Estimation of the Soil Water Retention Curve (SWRC) Using Pedotransfer Functions (PTFs)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F07%3A22014" target="_blank" >RIV/60460709:41210/07:22014 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Estimation of the Soil Water Retention Curve (SWRC) Using Pedotransfer Functions (PTFs)

Original language description

Soil hydraulic characteristics, especially the soil water retention curve and hydraulic conductivity, are essential for many agricultural, environmental, and engineering applictions. Their measuremetn is time-consuming and thus costly. Hence, many researchesrs focused on methods enabling their indirect estmation. In this paper, Wöstens continuous pedtransfer functions were applied to the data from a selected locality in the curves, and the informtion about the soil textue, bulk denstiy d, and organic matter content detrmined at the sme time. Own continuous pedotransfer functions were derived, following the methodology used in continuous pedotranser functions. Two types of fitting, 4-parameters and 3-parameters, were tested. In 4-parameters fitting, allparameters of the van Genuchten equation, were otimized, in 3-parameter fititing, only three parameters, were otpimised while the measured value of was set as constant. Based on the result, it can be concluded that the general equations

Czech name

Pedotransferové funkce jako metoda odhadu retenčních čar půdní vlhkosti

Czech description

Soil hydraulic characteristics, especially the soil water retention curve and hydraulic conductivity, are essential for many agricultural, environmental, and engineering applictions. Their measuremetn is time-consuming and thus costly. Hence, many researchesrs focused on methods enabling their indirect estmation. In this paper, Wöstens continuous pedtransfer functions were applied to the data from a selected locality in the curves, and the informtion about the soil textue, bulk denstiy d, and organic matter content detrmined at the sme time. Own continuous pedotransfer functions were derived, following the methodology used in continuous pedotranser functions. Two types of fitting, 4-parameters and 3-parameters, were tested. In 4-parameters fitting, allparameters of the van Genuchten equation, were otimized, in 3-parameter fititing, only three parameters, were otpimised while the measured value of was set as constant. Based on the result, it can be concluded that the general equations

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DF - Pedology

OECD FORD branch

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Project

<a href="/en/project/1G58095" target="_blank" >1G58095: Predictive soil agro-hydrological models of the retention of soil in the CR and their integration into the EU databases</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2007

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Soil and Water Research

ISSN

1801-5395

e-ISSN

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Volume of the periodical

2

Issue of the periodical within the volume

4

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

10

Pages from-to

113-122

UT code for WoS article

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EID of the result in the Scopus database

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