http://www.cnr.it/ontology/cnr/individuo/prodotto/ID45097
Rainfall intermittency and vegetation feedbacks in drylands (Articolo in rivista)
- Type
- Label
- Rainfall intermittency and vegetation feedbacks in drylands (Articolo in rivista) (literal)
- Anno
- 2008-01-01T00:00:00+01:00 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Baudena M., A. Provenzale (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Baudena: CIMA, Savona, Italy
Provenzale: ISAC-CNR, Torino, Italy (literal)
- Titolo
- Rainfall intermittency and vegetation feedbacks in drylands (literal)
- Abstract
- We discuss a simplifed, conceptual model for the
dynamics of the soil-vegetation system in drylands. The
model considers the different dynamical processes taking
place in vegetated and non-vegetated soil and it distinguishes
between the upper soil layer, where rapid evaporation dominates,
and the deeper root layer where only plant transpiration
takes place. We explore the role of rainfall intermittency
and of different plant colonization strategies, and discuss in
detail the effect of two different vegetation feedbacks: reduced
evaporation due to plant shading and increased infiltration
in vegetated areas. The results of the analysis indicate
that both temporal rainfall intermittency and the shading/
infiltration feedbacks have a beneficial effect on vegetation.
However, it turns out that in this model rainfall intermittency
and vegetation feedbacks have almost a mutually
exclusive role: whenever one of these two components is
present, the addition of the other does not further affect vegetation
dynamics in a significant way. (literal)
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