A new method for modelling dissolved phosphorus transport with the use of WaTEM/SEDEM

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00312913" target="_blank" >RIV/68407700:21110/17:00312913 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007%2Fs10661-017-6082-4#citeas" target="_blank" >https://link.springer.com/article/10.1007%2Fs10661-017-6082-4#citeas</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10661-017-6082-4" target="_blank" >10.1007/s10661-017-6082-4</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A new method for modelling dissolved phosphorus transport with the use of WaTEM/SEDEM

Popis výsledku v původním jazyce

This paper presents a newly derived method for directly determining the amount of transported dissolved phosphorus by water erosion. The results of the method are compared to prediction based on enrichment ratio (as proposed by Sharpley and average share of DP in total transported phosphorus (5%) that is widely-used in the Czech Republic. Four study areas (catchments of dozens of sq km) were chosen for their different characteristics (land-use, average slope, average elevation, phosphorus concentration in the soil) which influence their rainfall-runoff behavior. The modelled results are compared with data measured in-situ. The two methods provide similar results in intensively agriculturally used regions. Agreement among the methods was observed for three study areas with significant erosion intensity (above 4 t/ha/year). In the catchment with significantly lower erosion intensity (0.5 t/ha/year), the indirect method (Sharpley) underestimates the amount of DP transported in the watercourses. The sum of transports of suspended solids into watercourses, and the average available phosphorus content in the soil determined by the Mehlich 3 method (PM3) are the main factors influencing the results provided by the two methods. An analysis of the impact of these factors on the difference between the results of the methods was provided. Transport of suspended solids is related to the method difference (R range from 0.37 to 0.71). However, no significant relationship was found between the difference in the results and the average PM3 content in the soil (R range from 0.15 to 0.36).

Název v anglickém jazyce

A new method for modelling dissolved phosphorus transport with the use of WaTEM/SEDEM

Popis výsledku anglicky

This paper presents a newly derived method for directly determining the amount of transported dissolved phosphorus by water erosion. The results of the method are compared to prediction based on enrichment ratio (as proposed by Sharpley and average share of DP in total transported phosphorus (5%) that is widely-used in the Czech Republic. Four study areas (catchments of dozens of sq km) were chosen for their different characteristics (land-use, average slope, average elevation, phosphorus concentration in the soil) which influence their rainfall-runoff behavior. The modelled results are compared with data measured in-situ. The two methods provide similar results in intensively agriculturally used regions. Agreement among the methods was observed for three study areas with significant erosion intensity (above 4 t/ha/year). In the catchment with significantly lower erosion intensity (0.5 t/ha/year), the indirect method (Sharpley) underestimates the amount of DP transported in the watercourses. The sum of transports of suspended solids into watercourses, and the average available phosphorus content in the soil determined by the Mehlich 3 method (PM3) are the main factors influencing the results provided by the two methods. An analysis of the impact of these factors on the difference between the results of the methods was provided. Transport of suspended solids is related to the method difference (R range from 0.37 to 0.71). However, no significant relationship was found between the difference in the results and the average PM3 content in the soil (R range from 0.15 to 0.36).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Environmental Monitoring and Assessment

ISSN

0167-6369

e-ISSN

1573-2959

Svazek periodika

189

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

14

Strana od-do

—

Kód UT WoS článku

000405440300012

EID výsledku v databázi Scopus

2-s2.0-85021692250