Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Evapotranspiration of the Vetiver and Tifton 85 grasses grown in horizontal subsurface flow constructed wetlands
Estimation of the Crop Evapotranspiration (ETC) in Horizontal Subsurface Flow Constructed Wetlands (HSSF-CWs) is of great importance for hydrological modeling of these systems. The objective of this work was to obtain the Crop Coefficient (KC) values of Vetiver (Chrysopogon zizanioides) and Tifton 85 (Cynodon spp.) grasses when grown in HSSF-CWs whose porous medium was saturated with solutions containing different nutrients concentrations. The water balance was performed every day in order to determine the KC of the grasses. It was verified that the KC values of the Vetiver grass were independent of the nutrient availability, expressed in terms of Electrical Conductivity (EC) of the nutrient solution. The KC value in the initial growth phase (Phase I) was 0.99, independent of the seasons. In Phase II, the KC were 0.95 and 1.36 for autumn and spring, respectively, and for Phase III were 1.12 in autumn and 1.60 in spring. In relation to the Tifton 85 grass, the KC values showed a quadratic behavior as a function of the EC, where the KC estimation models were obtained by the cluster analysis in Phase II and III. For Phase I, the KC value was 1.17, independent of the EC and the time of year.
Evapotranspiration of the Vetiver and Tifton 85 grasses grown in horizontal subsurface flow constructed wetlands
Estimation of the Crop Evapotranspiration (ETC) in Horizontal Subsurface Flow Constructed Wetlands (HSSF-CWs) is of great importance for hydrological modeling of these systems. The objective of this work was to obtain the Crop Coefficient (KC) values of Vetiver (Chrysopogon zizanioides) and Tifton 85 (Cynodon spp.) grasses when grown in HSSF-CWs whose porous medium was saturated with solutions containing different nutrients concentrations. The water balance was performed every day in order to determine the KC of the grasses. It was verified that the KC values of the Vetiver grass were independent of the nutrient availability, expressed in terms of Electrical Conductivity (EC) of the nutrient solution. The KC value in the initial growth phase (Phase I) was 0.99, independent of the seasons. In Phase II, the KC were 0.95 and 1.36 for autumn and spring, respectively, and for Phase III were 1.12 in autumn and 1.60 in spring. In relation to the Tifton 85 grass, the KC values showed a quadratic behavior as a function of the EC, where the KC estimation models were obtained by the cluster analysis in Phase II and III. For Phase I, the KC value was 1.17, independent of the EC and the time of year.
Evapotranspiration of the Vetiver and Tifton 85 grasses grown in horizontal subsurface flow constructed wetlands
Teixeira, Denis L. (Autor:in) / Matos, Antonio T. (Autor:in) / Matos, Mateus P. (Autor:in) / Hamakawa, Paulo J. (Autor:in) / Teixeira, Delilah V. (Autor:in)
Journal of Environmental Science and Health, Part A ; 55 ; 661-668
11.05.2020
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Pollutant Removal by Horizontal Subsurface Flow Constructed Wetlands in Lithuania
| Online Contents | 2005
Modeling of Pollutants Removal in Subsurface Vertical Flow and Horizontal Flow Constructed Wetlands
| DOAJ | 2019
| Taylor & Francis Verlag | 2015