Transport of matters evoked with erosion in a small agricultural catchment

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027049%3A_____%2F19%3AN0000133" target="_blank" >RIV/00027049:_____/19:N0000133 - 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

Transport of matters evoked with erosion in a small agricultural catchment

Original language description

Harmful impacts of water erosion processes belong among the serious widespread problems of current environment conservation and maintaining of sustainable development of human population. Disturbance of soil surface, loss of soil particles and nutrients evokes reduction of soil fertility but, on the other side (among others), it negatively influences siltation of water bodies and surface water quality. Erosion events have been studied in a small agricultural catchment Němčický stream in the Czech Republic since 2005. The experimental catchment (3 km2) is situated in a hilly area north from Brno. There runs continual gauging of outflows and precipitations in the profile with a Thomson´s weir. Samples of surface water are taken with an automatic sampler during extreme rainfall-runoff events. Concentrations of insoluble matters, phosphorus and nitrogen are analysed in them. Erosion symptoms on the arable land (ridges, accumulation) are also studied and state of land use and vegetation cover are registered. Content of the nutrients (mentioned above) is monitored in soils and sediments in stream and on the bottom of reservoir closing the experimental catchment. The results enable to evaluate siltation velocity in the reservoir and to investigate nutrients transport in the catchment. From the year of the reservoir construction (2012), the bottom sediment has risen of 0.6 mm/year on the average. Total nitrogen and likewise phosphorus concentration in the bottom sediment appears to be nearly twice higher than in soils.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

<a href="/en/project/QK1910282" target="_blank" >QK1910282: Options for mitigation of the impacts of extreme hydrological events in small catchments with respect to the demands of sustainable agriculture and pond aquaculture</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

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