Modelling the impact of increasing soil sealing on runoff coefficients at regional scale: a hydropedological approach

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Title:Modelling the impact of increasing soil sealing on runoff coefficients at regional scale: a hydropedological approach
Creators:
Ungaro, Fabrizio; fabrizio dot ungaro at cnr dot it; CNR IBIMET - Via Madonna del Piano 10. I-50019 Sesto F.no (FI), Italy.
Calzolari, Costanza; CNR IBIMET - Via Madonna del Piano 10. I-50019 Sesto F.no (FI), Italy.
Pistocchi, Alberto; GECOsistema srl - Botengasse, 27 I-39050 Jenesien (BZ), Regione Emilia Romagna - Autorità dei bacini regionali romagnoli, via Biondini, 1 I-47100 Forlì (FC), Italy.
Malucelli, Francesco; Regione Emilia Romagna - Servizio Geologico, Sismico e dei Suoli, Viale A. Moro, Bologna (BO), Italy.
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 62, 1, pp. 33-42
Uncontrolled Keywords:land use change, soil functional groups, urbanization, runoff, Emilia-Romagna

Abstract

Soil sealing is the permanent covering of the land surface by buildings, infrastructures or any impermeable ar-tificial material. Beside the loss of fertile soils with a direct impact on food security, soil sealing modifies the hydrologi-cal cycle. This can cause an increased flooding risk, due to urban development in potential risk areas and to the increased volumes of runoff. This work estimates the increase of runoff due to sealing following urbanization and land take in the plain of Emilia Romagna (Italy), using the Green and Ampt infiltration model for two rainfall return periods (20 and 200 years) in two different years, 1976 and 2008. To this goal a hydropedological approach was adopted in order to charac-terize soil hydraulic properties via locally calibrated pedotransfer functions (PTF). PTF inputs were estimated via se-quential Gaussian simulations coupled with a simple kriging with varying local means, taking into account soil type and dominant land use. Results show that in the study area an average increment of 8.4% in sealed areas due to urbanization and sprawl induces an average increment in surface runoff equal to 3.5 and 2.7% respectively for 20 and 200-years return periods, with a maximum > 20% for highly sealed coast areas.

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Title:Modelling the impact of increasing soil sealing on runoff coefficients at regional scale: a hydropedological approach
Translated title:Modelling the impact of increasing soil sealing on runoff coefficients at regional scale: a hydropedological approach
Creators:
Ungaro, Fabrizio; fabrizio dot ungaro at cnr dot it; CNR IBIMET - Via Madonna del Piano 10. I-50019 Sesto F.no (FI), Italy.
Calzolari, Costanza; CNR IBIMET - Via Madonna del Piano 10. I-50019 Sesto F.no (FI), Italy.
Pistocchi, Alberto; GECOsistema srl - Botengasse, 27 I-39050 Jenesien (BZ), Regione Emilia Romagna - Autorità dei bacini regionali romagnoli, via Biondini, 1 I-47100 Forlì (FC), Italy.
Malucelli, Francesco; Regione Emilia Romagna - Servizio Geologico, Sismico e dei Suoli, Viale A. Moro, Bologna (BO), Italy.
Uncontrolled Keywords:land use change, soil functional groups, urbanization, runoff, Emilia-Romagna
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mathematics, Physics and Earth Sciences > Institute of Hydrodynamics > Journal of Hydrology and Hydromechanics
Journal or Publication Title:Journal of Hydrology and Hydromechanics
Volume:62
Number:1
Page Range:pp. 33-42
ISSN:0042-790X
Publisher:Institute of Hydrology of the Slovak Academy of Sciences and the Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic
Related URLs:
URLURL Type
http://avi.lib.cas.cz/node/55Publisher
ID Code:8184
Item Type:Article
Deposited On:05 Jun 2014 18:30
Last Modified:05 Jun 2014 16:30

Citation

Ungaro, Fabrizio; Calzolari, Costanza; Pistocchi, Alberto; Malucelli, Francesco (2014) Modelling the impact of increasing soil sealing on runoff coefficients at regional scale: a hydropedological approach. Journal of Hydrology and Hydromechanics, 62 (1). pp. 33-42. ISSN 0042-790X

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