Global climatic changes: modelling the potential responses of agro-ecosystems with special reference to crop protection.

carbon dioxide clima climat climate climatic change crop yield dioxyde de carbone distribution naturelle ecologia ecologie ecology efecto invernadero effet de serre enfermedades de las plantas greenhouse effect maladie des plantes malezas mauvaise herbe methode methods modele modelos models natural distribution pests of plants photosynthese photosynthesis plagas de plantas plant diseases racine ravageur des plantes rayonnement ultraviolet rendement des cultures rendimiento de cultivos roots ultraviolet radiation weeds