Field measurement of surface runoff and soil loss on agricultural land using rainfall simulator

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00323649" target="_blank" >RIV/68407700:21110/18:00323649 - 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

Field measurement of surface runoff and soil loss on agricultural land using rainfall simulator

Original language description

Measurement in the field conditions is an essential tool for understanding and describing the runoff generation and related soil loss processes and for modeling and design of control measures. This contribution introduces the results of field experiments with a rainfall simulator, targeted on determination of surface runoff and soil loss and their relation to various vegetation cover types. The dataset is used for various purposes: determination of USLE C-factor values, calibration of rainfall-runoff models, revision of runoff coefficients, etc. Presented results cover two experimental seasons, further research however is expected. The runoff and soil erosion experiments were repeatedly carried out on a set of the experimental plots located on an inclined field with various crops. Each plot of size 16 m2 and 9 % slope was enclosed by metal plates and at the lower end directed into a collection funnel. The artificial rainfall was generated with the mobile field rainfall simulator of CTU in Prague. The rainfall intensity was set to a constant rate of 60 mm/h. Duration of each experiment was fixed to 30 minutes after the surface runoff initiation. The experiment started on the soil surface with natural initial soil moisture conditions and then was repeated after 15 minutes pause on the fully saturated soil from the previous sprinkling. The same setup was applied on a plot with the seedbed conditions, once in every experimental day. In the 2,5 minutes interval the instantaneous surface runoff and soil loss at the plot outlet were measured. So far we tested 10 different crops during different grow stages (3 BBCH stages for each crop during vegetation season) and the bare soil (seed bed conditions). In total, 134 experiments were performed during two years. Testing different phenophases of crops allows to evaluate the vegetation protective effect on soil during the crop life-cycle. Presented research was funded by research grants QJ1530181 and SGS 17/173/OHK1.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

10501 - Hydrology

Project

<a href="/en/project/QJ1530181" target="_blank" >QJ1530181: Determination of the actual values of the protective effect of vegetation in order to quantification and efficiency improvement of erosion control of agricultural land in the Czech Republic</a><br>

Continuities

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

Publication year

2018

Confidentiality

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