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Introduction
Plant ecology, agroecology, ecological engineering, soil-plant interactions, natural ressources managment at the catchment scale.
Current institution
Eco-Altitude
Publications
Publications (16)
In the hills of south-east Asia shifting cultivation is developing towards more permanent cropping systems. In association with short fallow periods, fields suffer from weed pressure and this, in turn, leads to more frequent and deeper manual tillage. Due to steep slopes these operations induce tillage erosion. Measurements of such soil losses unde...
Mise en oeuvre d'un Secteur de Référence des sols en montagne Pyrénéenne, autour de la double question de la dégradation des sols (érosion) et du maintien de leur productivité fourragère.
Bassin versant du Bastan, dans les Hautes-Pyrénées.
Machine levelling for the creation or maintenance of ski slopes is a major source of disturbance in high elevation ecosystems. Traditional, exogenous seed mixtures can help restoring plant cover and mitigate soil erosion, but they comprise species that are not ecologically adapted to high elevation conditions. Here, the use of local seed mixtures,...
For more than 10 years, stakeholders have been trying to use native seeds for ecological restoration at high altitude. They aim at restoring dense vegetation covers and typical high altitude pastures. From 2000, they have been technically supported by the Botanical conservatory for Pyrenees and Midi-Pyrenees districts and the Amidev environment age...
Introduction Madagascar est une économie fondée sur le riz (UPDR/FAO/CIRAD, 2000, Dabat 2005). Résultat de l'implantation très ancienne de la riziculture à Madagascar, la consommation moyenne par tête, évaluée à 138 kg en milieu rural et 118 kg en milieu urbain, classe le pays parmi les plus gros consommateurs de riz au monde » (UPDR/FAO, op cité)....
The multiplicity of above-ground biomass uses is a major issue regarding conservation agriculture (CA) systems (Erenstein, 2003; Giller et al, 2009). We have simulated the biomass potential uses in the two CA cropping systems usually applied in the Alaotra Lake region of Madagascar for producing rainfed rice. The first is a two year rotation betwee...
La région de l'Alaotra repose sur un plateau situé à 750 mètres d'altitude avec au cœur de la plaine le lac Alaotra. La surface cultivée en riziculture est estimée à 148 500 ha en 2000 (FAO/UPDR, 2000), dont 75-80 000 ha dans la cuvette du Lac et plus de 65-70 000 ha au sud et dans les zones en périphérie, qui constitue 10% de la surface rizicole n...
Document de travail BV lac n° 51.
La région de l’Alaotra repose sur un plateau situé à 750 mètres d’altitude avec au coeur de la
plaine le lac Alaotra. La surface cultivée en riziculture est estimée à 148 500 ha en 2000
(FAO/UPDR, 2000), dont 75-80 000 ha dans la cuvette du Lac et plus de 65-70 000 ha au sud
et dans les zones en périphérie, qui constitue 10% de la surface rizicole...
Abstract Abstract Abstract Abstract Rotational shifting cultivation in the mountainous land of Northern Laos is responding to population pressure by intensification of land use. In many areas the rotational cycle has been shortened to an unsustainable three to five years. With shorter rotations weed infestation becomes the major constraint in uplan...
