Abstract
Long term dynamics of beachside vegetation, Carex kobomugi Ohwi.was evaluated by their growth model. The model was formulated by rhizome formation characteristics and long-term senescence with panicle formation obtained at Ryuyo beach. The model agrees well for the seasonal variation of their aboveground and belowground biomass. This model describes the future horizontal enlargement and distribution of their biomass. For horizontal distribution, we analyzed with 0.2, 0.4, 0.6, 0.8, 1.0 and 1.6 m transplanting distances. With 0.2 - 0.4 m distances, we couldn’t expect to control brown sand in wide area within a few years. Moreover, with 1.0 - 1.6 m distances, it took much time until controlling brown sand within expectable. The optimized transplant distances were found within 0.6 - 0.8 m by considering their enlargement and belowground biomass.
