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The hydrological impact of the mediterranean forest: a review of French research

Abstract : Forest hydrology studies carried out in France have focused mainly on the Mediterranean part of the country. Three experimental catchment groups exist and have been monitored over a long period. Some forested catchments (Draix catchment) underwent no change during the study period, while others experienced either clear cutting (Lozère catchment) or forest fires (part of the Réal Collobrier catchments). In each case studied, the behaviour of the forested catchment was compared to that of a control catchment. Included with the experimental catchment studies are the results of research with a fundamentally different approach. The research is based on a statistical study of the interrelated development of afforestation rates and runoff characteristics for average-sized catchments (around 100 km(2)) in that part of the southern French Massif Central which is subject to Mediterranean rainfall conditions. The results differ considerably from one site to another, indicating the degree of complexity of the rainfall/runoff relationship. An increase in extreme flood events due to forest disturbance could by no means be confirmed in every case. A closer look at the hydrological behaviour of the catchments cleared up the apparent inconsistencies. It is mainly the contrast between bare soil and vegetated soil, rather than between forest and other types of vegetation witch is relevant in explaining the hydrological behaviour.
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https://hal.inrae.fr/hal-02584131
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Submitted on : Thursday, May 14, 2020 - 10:53:14 PM
Last modification on : Thursday, April 15, 2021 - 4:57:37 PM

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C. Cosandey, V. Andreassian, C. Martin, J.F. Didon Lescot, J. Lavabre, et al.. The hydrological impact of the mediterranean forest: a review of French research. Journal of Hydrology, Elsevier, 2005, 301 (1-4), pp.235-249. ⟨10.1016/j.jhydrol.2004.06.040⟩. ⟨hal-02584131⟩

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