Subjects: | DESERTIFICATION,
DESERT SOILS,
ARID ZONES,
LAND USE,
DEFORESTATION,
OVERGRAZING,
SOIL DEGRADATION,
DUST,
STORMS,
PRECIPITATION,
DROUGHT,
CLIMATE,
SEA POLLUTION,
FISHERY RESOURCES,
RESOURCE DEPLETION,
MARINE AREAS,
HUMAN POPULATION,
DESERTS,
RECLAMATION,
USSR,
RANGELANDS,
SOMALIA,
SOL DE DESERT,
ZONE ARIDE,
DESERTIFICACION,
SUELO DE DESIERTOS,
ZONA ARIDA,
UTILISATION DES TERRES,
DEBOISEMENT,
SURPATURAGE,
DEGRADATION DU SOL,
POUSSIERE,
TEMPETE,
SECHERESSE,
CLIMAT,
POLLUTION DES MERS,
RESSOURCE HALIEUTIQUE,
EPUISEMENT DES RESSOURCES,
REGION MARINE,
POPULATION HUMAINE,
DESERT,
RECUPERATION DES SOLS,
URSS,
PARCOURS,
SOMALIE,
UTILIZACION DE LA TIERRA,
DEFORESTACION,
SOBREPASTOREO,
DEGRADACION DEL SUELO,
POLVO (CONTAMINANTES),
TORMENTAS,
PRECIPITACION ATMOSFERICA,
SEQUIA,
CLIMA,
POLUCION MARINA,
RECURSOS PESQUEROS,
AGOTAMIENTO DE RECURSOS,
ZONAS MARINAS,
POBLACION HUMANA,
DESIERTOS,
REHABILITACION DE TIERRAS,
TIERRAS DE PASTOS, |