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Effects of afforestation on soil water balance : eucalyptus plantation in the Kouilou basin (Congo)

Nizinski G., Morand D., Bouillet J.P., Nzila J.D.D.. 1998. In : CIFOR. Site Management and Productivity in Tropical Forest Plantations. Impact on Soils and Options for Management over Successive Rotations. 2. Pointe-Noire : CIRAD-Forêt, 6 p.. CIFOR. Site Management and Productivity in Tropical Forest Plantations. Impact on Soils and Options for Management over Successive Rotations. 2, 1998-02-16/1998-02-20, Pietermaritzburg (Afrique du Sud).

In a five years-old Eucalyptus plantation and in a savannah with Loudetia arundinacea, gross precipitations, throughfall and soil water content were measured weekly during the rainy season from october 1996 to april 1997 and during the dry season, from june to september 1997. Actual evapotranspiration, net interception and transpiration was derived from the water balance equation method. Moreover, transpiration was measured using the radial flow meter. The soil water profiles were established, giving an account of preferential water uptake zones and rooting depths of Eucalyptus plantation and savannah species

Mots-clés : eucalyptus; eucalyptus urophylla; extension forestière; plantation forestière; savane; bilan hydrique du sol; Évapotranspiration; teneur en eau du sol; précipitation; durabilité; congo; eucalyptus alba; interception des précipitations

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