(1901-1978) ; Analyse discriminante ; Analyse multivariée ; Anomalie des précipitations ; Anomalie thermique ; Classification ; Géographie de l'Europe ; Kazahskaja SSR ; Probabilité ; Précipitation ; Prévision ; Période de végétation
A classification of vegetation periods from the ratio of the number of large positive and negative anomalies is presented. The value of 1.2 is accepted as a criterion of a large anomaly. Four classes of vegetation periods is singled out