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| Titel |
The role of olive trees in rainfall erosivity and runoff and sediment yield in the soil beneath |
| VerfasserIn |
E. Luna, A. Laguna, J. V. Giráldez |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 4, no. 1 ; Nr. 4, no. 1, S.141-153 |
| Datensatznummer |
250001525
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| Publikation (Nr.) |
 copernicus.org/hess-4-141-2000.pdf |
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| Zusammenfassung |
| The modification of raindrops by the canopy of olive trees
increases the kinetic energy of the rain per unit area. The kinetic energy
computed from the measured drop size distribution under the tree canopy in
simulated rainfall experiments is greater than that received in the open,
17.1 J mm-1, as against 15.7 J mm-1 . This causes higher soil
detachment and loss than that observed outside the canopy. Tillage treatments of
the soil modify its erodibility, accelerate soil detachment and reduce,
simultaneously, the velocity of runoff. Both effects reduce the amount of
sediment compared to that observed in the non-tilled soil. The average values of
soil lost per unit of rain depth and unit area were 5.81 g mm-1 m-2
(conventional tillage) and 4.02 g mm-1 m-2 (zero tillage)
under the canopy compared to 0.89 g mm-1 m-2 (conventional
tillage) and 0.95 g mm-1 m-2 (zero tillage) in the open. |
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