Etude phyto-ecologique et amenagement pastoral de Zagros meridional iranien (Region de Bouchir)

agropastoral systems arid climate biogeografia biogeographie biogeography changement climatique clima clima arido climat climat aride climate climatic change conduite des herbages ecologia ecologie ecology environment environmental management environnement estepas evapotranspiration flora flore geomorfologia geomorphologie geomorphology gestion des ressources grassland management manejo de praderas medio ambiente natural pastures nomadism nomadisme nomadismo pastizal natural pastizales pastoralism pastoralisme pastoralismo pastures prairie naturelle precipitation production possibilities soil sol steppe steppes suelo temperatura temperature transhumance trashumancia vegetation