Agriculture de subsistance ; Agriculture traditionnelle ; Andes ; Bolivie ; Climatologie ; Culturel ; Dégradation de l'environnement ; Environnement ; Mode de vie ; Montagne ; Pression démographique ; Zonation altitudinale
Altitudinal zonation ; Andes ; Bolivia ; Climatology ; Cultural geography ; Environment ; Environmental degradation ; Mountain ; Population pressure ; Subsistence agriculture;Subsistence farming ; Traditional agriculture ; Way of life
As exemplified by the Callawaya people of Bolivia, traditional Andean agriculture arranged in a zonation of vertical belts was adapted to the climate. External social and technological changes have upset the equilibrium resulting in environmental