Laboratorní monitorování vztahu mezi kinetickou energií deště a rozpadem půdních agregátů

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00324619" target="_blank" >RIV/68407700:21110/18:00324619 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

čeština

Název v původním jazyce

Laboratorní monitorování vztahu mezi kinetickou energií deště a rozpadem půdních agregátů

Popis výsledku v původním jazyce

Rainfall simulator is a common tool used to study the impact of rainfall on soil. This study presents the effect of various rainfall intensities and related kinetic energies to splash erosion under controlled experimental conditions. We used “Norton ladder” laboratory rainfall simulator to recurrently simulate several rainfall patterns with given kinetic energy and rainfall intensity. Firstly, twelve positions under the simulator were assigned, the rainfall kinetic energy and intensity were measured for every position, as spatial distribution of neihter intensity nor kinetic energy is homogeneus. Range of kinetic energy was between 180 and 680 J m-2 h-1, the rainfall intensity was 19 - 71 mm h-1. Secondly, a soil sample packed into splash cup (a plastic cylinder with a surface area of 88 cm2) was positioned in the centre of the splash collector with outer diameter of 45 cm. The splash cups were placed on all the preselected positions. After every rainfall simulation, the splashed material was collected, filtered and dried in air dryer to estimate total amount of soil loss. Photographs of soil surface before and after the experiments were taken to create digital model of relief and to calculate change of roughness and rate of soil compaction. Here we present results of theobserved relationship between rainfall intensity, kinetic energy and splash erosion for a single tested loamy soil.

Název v anglickém jazyce

Experimental monitoring of the relationship between rainfall kinetic energy and splash erosion

Popis výsledku anglicky

Rainfall simulator is a common tool used to study the impact of rainfall on soil. This study presents the effect of various rainfall intensities and related kinetic energies to splash erosion under controlled experimental conditions. We used “Norton ladder” laboratory rainfall simulator to recurrently simulate several rainfall patterns with given kinetic energy and rainfall intensity. Firstly, twelve positions under the simulator were assigned, the rainfall kinetic energy and intensity were measured for every position, as spatial distribution of neihter intensity nor kinetic energy is homogeneus. Range of kinetic energy was between 180 and 680 J m-2 h-1, the rainfall intensity was 19 - 71 mm h-1. Secondly, a soil sample packed into splash cup (a plastic cylinder with a surface area of 88 cm2) was positioned in the centre of the splash collector with outer diameter of 45 cm. The splash cups were placed on all the preselected positions. After every rainfall simulation, the splashed material was collected, filtered and dried in air dryer to estimate total amount of soil loss. Photographs of soil surface before and after the experiments were taken to create digital model of relief and to calculate change of roughness and rate of soil compaction. Here we present results of theobserved relationship between rainfall intensity, kinetic energy and splash erosion for a single tested loamy soil.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10501 - Hydrology

Projekt

<a href="/cs/project/GF17-33751L" target="_blank" >GF17-33751L: Vliv kinetické energie deště na uvolňování a transport půdních částic</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

TRANSPORT VODY, CHEMIKÁLIÍ A ENERGIE V SYSTÉME PÔDA-RASTLINA-ATMOSFÉRA

ISBN

978-80-89139-42-2

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

216-223

Název nakladatele

Institute of Hydrology SAS

Místo vydání

Bratislava

Místo konání akce

Bratislava

Datum konání akce

7. 11. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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