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  • Open Access


    Cartographie des surfaces pastorales à l’aide des données Sentinel 2 L3A et des données ouvertes

    Promesses et réalités

    Urcel Kalenga Tshingomba1,2, Magali Jouven2, Lucile Sautot2 , Imad Shaqura2, Maguelonne Teisseire1

    Revue Internationale de Géomatique, Vol.30, No.2, pp. 245-277, 2020, DOI:10.3166/rig.2022.00112

    Abstract In this paper we experiment an approach allowing to produce a coherent land use and cover of rangelands in the French Mediterranean areas represented by the Occitania and Provence-Alpes-Côte d’Azur regions. Four different data sources are used: the OSO land use and cover (OSO), the Registre Parcellaire Graphique (RPG), the BD-Forêt V.2.0 and Sentinel 2 L3A satellite data. The RPG of 2019 and the BD-Forêt updated in 2018 were used as the main source of reference data for training the models to classify the OSO 2019 low F-score class objects, after extraction of the reflectances, spectral and textural indices variables… More >

  • Open Access


    Root traits and arbuscular mycorrhiza on perennial grasses exposed to defoliation after a controlled burning

    Ithurrart LS1,2, CA Busso1,2, YA Torres1,3, DV Peláez1,2,3, H Giorgetti4, G Rodríguez4, ML Ambrosino2,5

    Phyton-International Journal of Experimental Botany, Vol.87, pp. 51-59, 2018, DOI:10.32604/phyton.2018.87.051

    Abstract Plant competition for soil resources is common in semiarid rangelands. Plants have various, alternative mechanisms to deal with soil resource acquisition. They include (1) length, weight and proliferation of roots, (2) root length density, and (3) root colonization by arbuscular mycorrhiza. In rangelands of Argentina, plants are exposed to herbivory after natural fires. As a result, knowledge on how these disturbances impact root traits is important for outlining guidelines focused on rangeland management and improvement. Our aim was to analyze the effects of defoliation after a controlled burning on root traits (1) to (3) on two preferred (Poa ligularis and… More >

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