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| Titel |
Analysis of soil and vegetation patterns in semi-arid Mediterranean landscapes by way of a conceptual water balance model |
| VerfasserIn |
I. Portoghese, V. Iacobellis, M. Sivapalan  |
| 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 ; 12, no. 3 ; Nr. 12, no. 3 (2008-06-13), S.899-911 |
| Datensatznummer |
250010664
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| Publikation (Nr.) |
 copernicus.org/hess-12-899-2008.pdf |
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| Zusammenfassung |
| This paper investigates the impact of various vegetation types on water
balance variability in semi-arid Mediterranean landscapes, and the different
strategies they may have developed to succeed in such water-limited
environments. The existence of preferential associations between soil water
holding capacity and vegetation species is assessed through an extensive
soil geo-database focused on a study region in Southern Italy. Water balance
constraints that dominate the organization of landscapes are investigated by
a conceptual bucket approach. The temporal water balance dynamics are
modelled, with vegetation water use efficiency being parameterized through
the use of empirically obtained crop coefficients as surrogates of
vegetation behavior in various developmental stages. Sensitivity analyses
with respect to the root zone depth and soil water holding capacity are
carried out with the aim of explaining the existence of preferential
soil-vegetation associations and, hence, the spatial distribution of
vegetation types within the study region. Based on these sensitivity
analyses the degrees of suitability and adaptability of each vegetation type
to parts of the study region are explored with respect of the soil water
holding capacity, and the model results were found consistent with the
observed affinity patterns. |
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