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| Titel |
Potential and limitations of using soil mapping information to understand landscape hydrology |
| VerfasserIn |
F. Terribile, A. Coppola, G. Langella, M. Martina, A. Basile |
| 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 ; 15, no. 12 ; Nr. 15, no. 12 (2011-12-22), S.3895-3933 |
| Datensatznummer |
250013063
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| Publikation (Nr.) |
 copernicus.org/hess-15-3895-2011.pdf |
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| Zusammenfassung |
This paper addresses the following points: how can whole soil data from
normally available soil mapping databases (both conventional and those
integrated by digital soil mapping procedures) be usefully employed in
hydrology? Answering this question requires a detailed knowledge of the
quality and quantity of information embedded in and behind a soil map.
To this end a description of the process of drafting soil maps was prepared
(which is included in Appendix A of this paper). Then a detailed screening
of content and availability of soil maps and database was performed, with
the objective of an analytical evaluation of the potential and the
limitations of soil data obtained through soil surveys and soil mapping.
Then we reclassified the soil features according to their direct, indirect
or low hydrologic relevance. During this phase, we also included information
regarding whether this data was obtained by qualitative, semi-quantitative
or quantitative methods. The analysis was performed according to two main
points of concern: (i) the hydrological interpretation of the soil data and
(ii) the quality of the estimate or measurement of the soil feature.
The interaction between pedology and hydrology processes representation was
developed through the following Italian case studies with different
hydropedological inputs: (i) comparative land evaluation models, by means of
an exhaustive itinerary from simple to complex modelling applications
depending on soil data availability, (ii) mapping of soil hydrological
behaviour for irrigation management at the district scale, where the main
hydropedological input was the application of calibrated pedo-transfer
functions and the Hydrological Function Unit concept, and (iii) flood event
simulation in an ungauged basin, with the functional aggregation of
different soil units for a simplified soil pattern.
In conclusion, we show that special care is required in handling data from
soil databases if full potential is to be achieved. Further, all the case
studies agree on the appropriate degree of complexity of the soil
hydrological model to be applied. We also emphasise that effective
interaction between pedology and hydrology to address landscape hydrology
requires (i) greater awareness of the hydrological community about the type of
soil information behind a soil map or a soil database, (ii) the development of
a better quantitative framework by the pedological community for evaluating
hydrological features, and (iii) quantitative information on soil spatial
variability. |
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