Effect of drought on the livelihood of peasant families in the dry zone of Sri Lanka: a study of the Mahapotana Korale in the north central province

affectation de ressources asia asie catastrophe naturelle clima climat climate climatic zones condiciones ambientales condition de milieu desarrollo de recursos desastres naturales drought environment environmental conditions environnement land use losses medio ambiente natural disasters perte profitability rentabilidad resource allocation resource development site factors sociologia sociologie sociology utilisation du sol zone climatique zone semi-aride