The paper is focused upon detail production-ecological analysis of the total herb layer biomass (above- and belowground) in four broad-leaved forest ecosystems (Carici pilosae-Carpinetum, Carici pilosae-Fagetum, Aceri-Carpinetum and Stellario-Alnetum) near Skalica (Zlatnícka dolina valley) in the Biele Karpaty Mts. Results (Table 2) are discussed and compared with other ones obtained from similar forest ecosystems of Slovakia.