GROWTH DYNAMIC ANALYSIS OF Typha latifolia AND Typha angstifolia BASED ON THE CHARACTERISTICS IN INITIAL GROWING SEASON

The growth dynamic model of Typha angustifolia and Typha latifolia was developed by considering the characteristics of initial biomass allocation and their energy transport from below to aboveground organ while heterotrophic growing season. Growth characteristics of Typha spp. were investigated by sampling their each organ in their early growing stage. Initial relationships among belowground biomass, aboveground biomass and shoot height were investigated. Typha spp. have less capacity for utilizing the reserved material than Phragmites australis. Shoot elongation is seasonally changed in each species and the highest at start of growth. The vertical productive structures of Typha spp. were not so change seasonally. By using above obtained characteristics, the model was successfully applied to simulate the seasonal variation of the total biomass with different water depth for Typha angustifolia and Typha latifolia.