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Elmaloglou, S. ; Diamantopoulos, Efstathios:
The effect of hysteresis on three-dimensional transient water flow during surface trickle irrigation.
In: Irrigation and Drainage.
Bd. 57
(2008)
Heft 1
.
- S. 57-70.
ISSN 1531-0361
DOI: https://doi.org/10.1002/ird.353
Abstract
The effect of hysteresis on deep percolation, irrigation efficiency and soil water content profiles by surface point sources was studied through the use of a cylindrical flow model which incorporates hysteresis in the soil water characteristic curve (Scott et al., 1983), evaporation from the soil surface and water extraction by roots. Several combinations of discharge rate and irrigation durations were tested. The dripper spacing was 60 × 60 cm. The implementation of the mathematical model took place against two of the twelve USDA soil classes. Water content profiles are presented for a radial distance of 1, 17 and 32.8 cm from the point source and for various times. The results show that hysteresis seems to reduce the water losses under the root zone at the end of the simulation time to a great extent. In addition, it was found that hysteresis reduced the deep percolation more in the coarse-grained soil than in the fine-grained soil. Finally, for both soils hysteresis increased the irrigation efficiency.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Lehrstuhl Bodenphysik Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Lehrstuhl Bodenphysik > Lehrstuhl Bodenphysik - Univ.-Prof. Dr. Efstathios Diamantopoulos |
| Titel an der UBT entstanden: | Nein |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 500 Naturwissenschaften 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften, Geologie |
| Eingestellt am: | 21 Mai 2026 08:04 |
| Letzte Änderung: | 21 Mai 2026 08:04 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/97280 |