Effect of erosive efficient rains specification on rainfall erosivity factor

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F23%3A00584242" target="_blank" >RIV/86652079:_____/23:00584242 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00020699:_____/23:N0000100

Výsledek na webu

<a href="https://journal.geo.sav.sk/cgg/article/view/472/427" target="_blank" >https://journal.geo.sav.sk/cgg/article/view/472/427</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.31577/congeo.2023.53.3.7" target="_blank" >10.31577/congeo.2023.53.3.7</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of erosive efficient rains specification on rainfall erosivity factor

Popis výsledku v původním jazyce

The water erosion represents one of the most dangerous degradation processes on agricultural land. Its estimation is thus necessary for setting rules and defining appropriate strategies for soil protection. An estimation of a long-term average annual soil loss by water erosion is frequently based on the Universal Soil Loss Equation (USLE) defined as a product of six factors, where rainfall erosivity factor (R factor) is a leading one. R factor is a multi-annual average index that measures rainfall kinetic energy and intensity describing the effect of erosive efficient rains (EER) on sheet and rill erosion. EER were defined by total higher than 12.7 mm and intensity higher than 6.4 mm in 15 minutes. As those ERR criteria are being used differently by various studies, we decided to compare R factor derived by two variants of ERR criteria: i) EER must fulfil both minimal total and minimal intensity (VAR_AND), ERR must fulfil either minimal total or minimal intensity (VAR_OR). Based on 1-minute precipitation totals database of Czech hydrometeorological institute for 111 stations for 1991-2021 we conclude that mean of Ra VAR_AND across altitude is about 30% lower than Ra VAR OR while there is high statistical significant correlation between those two variants. In addition, annual values of R factor derived by both variants show a statistically significant increase in a long run which calls for updating the R-factor values to reflect increasing climate change impacts.

Název v anglickém jazyce

Effect of erosive efficient rains specification on rainfall erosivity factor

Popis výsledku anglicky

The water erosion represents one of the most dangerous degradation processes on agricultural land. Its estimation is thus necessary for setting rules and defining appropriate strategies for soil protection. An estimation of a long-term average annual soil loss by water erosion is frequently based on the Universal Soil Loss Equation (USLE) defined as a product of six factors, where rainfall erosivity factor (R factor) is a leading one. R factor is a multi-annual average index that measures rainfall kinetic energy and intensity describing the effect of erosive efficient rains (EER) on sheet and rill erosion. EER were defined by total higher than 12.7 mm and intensity higher than 6.4 mm in 15 minutes. As those ERR criteria are being used differently by various studies, we decided to compare R factor derived by two variants of ERR criteria: i) EER must fulfil both minimal total and minimal intensity (VAR_AND), ERR must fulfil either minimal total or minimal intensity (VAR_OR). Based on 1-minute precipitation totals database of Czech hydrometeorological institute for 111 stations for 1991-2021 we conclude that mean of Ra VAR_AND across altitude is about 30% lower than Ra VAR OR while there is high statistical significant correlation between those two variants. In addition, annual values of R factor derived by both variants show a statistically significant increase in a long run which calls for updating the R-factor values to reflect increasing climate change impacts.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10510 - Climatic research

Projekt

<a href="/cs/project/QK22020130" target="_blank" >QK22020130: Implementace inovací BPEJ do systému státní správy</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Contributions to geophysics and geodesy

ISSN

1338-0540

e-ISSN

—

Svazek periodika

53

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

18

Strana od-do

301-318

Kód UT WoS článku

001167648700007

EID výsledku v databázi Scopus

2-s2.0-85175043302