Surface and subsurface flow in eucalyptus plantations in north-central Portugal

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Title:Surface and subsurface flow in eucalyptus plantations in north-central Portugal
Creators:
Boulet, Anne-K; anne dot karine at ua dot pt; Centro de Estudos do Ambiente e do Mar (CESAM), Departamento de Ambiente e Ordenamento, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
Prats, Sergio A.; Centro de Estudos do Ambiente e do Mar (CESAM), Departamento de Ambiente e Ordenamento, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
Malvar, Maruxa C.; Centro de Estudos do Ambiente e do Mar (CESAM), Departamento de Ambiente e Ordenamento, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
González-Pelayo, Oscar; Centro de Estudos do Ambiente e do Mar (CESAM), Departamento de Ambiente e Ordenamento, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
Coelho, Celeste O.A.; Centro de Estudos do Ambiente e do Mar (CESAM), Departamento de Ambiente e Ordenamento, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
Ferreira, Antonio J.D.; Departamento de Ciências Exatas e Ambientais, Escola Superior Agrária de Coimbra, Bencanta, 3040-316 Coimbra, Portugal.
Keozer, Jan J.; Centro de Estudos do Ambiente e do Mar (CESAM), Departamento de Ambiente e Ordenamento, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 63, 3, pp. 193-200
Uncontrolled Keywords:overland flow, subsurface flow, streanflow, soil moisture, eucalypt

Abstract

In the Baixo Vouga region of north-central Portugal, forests occupy half of the territory, of which two thirds are Eucalypts plantations. The hydrological implications of this large-scale introduction of eucalypt are unknown and the aim of this exploratory study, realized in the Caramulo Mountains, was to describe overland flow (OLF), subsurface flow (SSF) and stream flow (Q) in a catchment dominated by Eucalyptus plantations. The main conclusions are that annual OLF rate is low, spatially heterogeneous between 0.1% and 6% and concentrated during the wet season as saturation excess, particularly as return flow. Infiltration-excess OLF due to the strong soil water repellence (SWR) is dominant during dry season, but produces residual runoff amount. SSF is the principal mechanism of runoff formation. It originates from matrix flow and pipe flow at the soil-bedrock interface, principally during the wet season. Matrix flow is correlated with soil moisture (SM) content, with a threshold of 25 %. Pipe flow starts with saturation of soil bottom but without saturation of the entire soil profile, due to a large network of macropores. Stream flow response is highly correlated with matrix flow behaviour in timing and intensity. SWR induces a very patchy moistening of the soil, concentrates the fluxes and accelerates them almost 100 times greater than normal percolation of the water in the matrix.

Official URL: http://147.213.145.2/vc/vc1.asp

Title:Surface and subsurface flow in eucalyptus plantations in north-central Portugal
Translated title:Surface and subsurface flow in eucalyptus plantations in north-central Portugal
Creators:
Boulet, Anne-K; anne dot karine at ua dot pt; Centro de Estudos do Ambiente e do Mar (CESAM), Departamento de Ambiente e Ordenamento, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
Prats, Sergio A.; Centro de Estudos do Ambiente e do Mar (CESAM), Departamento de Ambiente e Ordenamento, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
Malvar, Maruxa C.; Centro de Estudos do Ambiente e do Mar (CESAM), Departamento de Ambiente e Ordenamento, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
González-Pelayo, Oscar; Centro de Estudos do Ambiente e do Mar (CESAM), Departamento de Ambiente e Ordenamento, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
Coelho, Celeste O.A.; Centro de Estudos do Ambiente e do Mar (CESAM), Departamento de Ambiente e Ordenamento, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
Ferreira, Antonio J.D.; Departamento de Ciências Exatas e Ambientais, Escola Superior Agrária de Coimbra, Bencanta, 3040-316 Coimbra, Portugal.
Keozer, Jan J.; Centro de Estudos do Ambiente e do Mar (CESAM), Departamento de Ambiente e Ordenamento, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
Uncontrolled Keywords:overland flow, subsurface flow, streanflow, soil moisture, eucalypt
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:63
Number:3
Page Range:pp. 193-200
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:8520
Item Type:Article
Deposited On:17 Dec 2015 12:38
Last Modified:17 Dec 2015 11:38

Citation

Boulet, Anne-K; Prats, Sergio A.; Malvar, Maruxa C.; González-Pelayo, Oscar; Coelho, Celeste O.A.; Ferreira, Antonio J.D.; Keozer, Jan J. (2015) Surface and subsurface flow in eucalyptus plantations in north-central Portugal. Journal of Hydrology and Hydromechanics, 63 (3). pp. 193-200. ISSN 0042-790X

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