Influence of vegetation on the hydraulic behaviour of a reconstructed wetland

• Autorzy: Dal Cin L. , Bendoricchio G.
• Języki publikacji: EN

Abstrakty

EN

The ecohydrological approach can be applied to reconstructed wetlands where an appropriate vegetation design is needed in order to optimise hydraulic behaviour, water quality improvement and biodiversity increase. The purpose of this study is to examine the hydraulic effects of different development stages of vegetation in a demonstrative reconstructed wetland in Italy characterised by a central canal and two vegetated lateral shallow zones. Tracer tests were carried out in different vegetation conditions. The residence time distributions were analysed using several parameters. As expected, the results show that with more developed vegetation the hydraulic dead zones increase. On the other hand, a moderate increase of vegetation density doesn’t hinder the flow, but rather increases dispersion number. A proper design has to avoid hydraulic short circuiting and provide a good distribution of the flow especially in the vegetated zones.

Słowa kluczowe

EN

wetland; hydraulics; residence time; vegetation; meandering channel; reconstructed wetland; ecohydrology

• Wydawca: -
• Czasopismo: International Journal of Ecohydrology and Hydrobiology
• Rocznik: 2002
• Tom: 02
• Numer: 1-4
• Opis fizyczny: p.283-288,fig.,ref.

Twórcy

autor

Dal Cin L.

• Universita di Padova, Via Marzolo 9, 35131 Padova, Italy

autor

Bendoricchio G.