Transpiration in wet meadows and some other types of Grassland

Transpiration rate in four types of alluvial meadows has been studied. Water wapour output of different grassland communities seems to be proportional to their biomass, bearing no relation to the species composition even though transpiration of individual species differed considerably. The relation between the above-ground biomass and the daily transpiration has been ascertained for wet, mesophytic and dry grassland and seems to be constant under similar sets of environmental conditions. The coefficient for estimating the daily transpiration in meadows from their biomass is presented.