Prediction of saturated hydraulic conductivity Ks of agricultural soil using pedotransfer functions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F23%3A96537" target="_blank" >RIV/60460709:41210/23:96537 - isvavai.cz</a>

Výsledek na webu

<a href="https://swr.agriculturejournals.cz/pdfs/swr/2023/01/04.pdf" target="_blank" >https://swr.agriculturejournals.cz/pdfs/swr/2023/01/04.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17221/130/2022-SWR" target="_blank" >10.17221/130/2022-SWR</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Prediction of saturated hydraulic conductivity Ks of agricultural soil using pedotransfer functions

Popis výsledku v původním jazyce

The determination of the saturated hydraulic conductivity Ks on a field scale presents a challenge in which several variables have to be considered. As there is no benchmark or reference method for the Ks determination, the suitability of each available method has to be evaluated. This study is aimed at the functional evaluation of three publicly available types of pedotransfer functions (PTFs) with different levels of utilised predictors. In total, ten PTF models were applied to the 56 data sets including the measured Ks value and the required predictors (% sand, silt and clay particles, dry bulk density, and organic matter/organic carbon content). A single agricultural field with a relatively homogenous particle size distribution was selected for the study to evaluate the ability of the PTF to reflect the variability of Ks. The correlation coefficient, coefficient of determination, mean error, and root mean square error were determined to evaluate the Ks prediction quality. The results showed a high variability in Ks within the field; the measured Ks values ranged between 10 and 1261 cm/day. Although the tested PTF models are based on a robust background of soil databases, they could not provide estimates with satisfactory accuracy unless local soil data were incorporated into the PTF development.

Název v anglickém jazyce

Prediction of saturated hydraulic conductivity Ks of agricultural soil using pedotransfer functions

Popis výsledku anglicky

The determination of the saturated hydraulic conductivity Ks on a field scale presents a challenge in which several variables have to be considered. As there is no benchmark or reference method for the Ks determination, the suitability of each available method has to be evaluated. This study is aimed at the functional evaluation of three publicly available types of pedotransfer functions (PTFs) with different levels of utilised predictors. In total, ten PTF models were applied to the 56 data sets including the measured Ks value and the required predictors (% sand, silt and clay particles, dry bulk density, and organic matter/organic carbon content). A single agricultural field with a relatively homogenous particle size distribution was selected for the study to evaluate the ability of the PTF to reflect the variability of Ks. The correlation coefficient, coefficient of determination, mean error, and root mean square error were determined to evaluate the Ks prediction quality. The results showed a high variability in Ks within the field; the measured Ks values ranged between 10 and 1261 cm/day. Although the tested PTF models are based on a robust background of soil databases, they could not provide estimates with satisfactory accuracy unless local soil data were incorporated into the PTF development.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40104 - Soil science

Projekt

<a href="/cs/project/QK1910086" target="_blank" >QK1910086: Snižování zátěže povrchových vod zdroji plošného zemědělského znečištění při uplatnění regulace drenážního odtoku na stávajících stavbách zemědělského odvodnění</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Soil and Water Research

ISSN

1801-5395

e-ISSN

1801-5395

Svazek periodika

18

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

7

Strana od-do

25-32

Kód UT WoS článku

000924361900001

EID výsledku v databázi Scopus

2-s2.0-85159149711