An Analysis of Seasonal Variation of Vegetative Propagation and the Relationships Between Biomass and Population Density of Aneurolepidium chinense in Songnen Plain of China
Abstract:Aneurolepidium chinense (Trin.) Kitag. is a perennial rhizome grass with fertile vegetative propagation. According to the field-investigation at fixed locations in fixed period, the seasonal change of vegetative propagation of A. chinense population and the autopopulation were specifically analysed. The results showed that both A. chinense population and the autopopulation could continuously make vegetative propagation in the entire growh season. The vegetative propagation brought more potential into play in the autopopulation of planting tillering than in the autopopulation of planting seedling, and the dynamics conformed to the Logistic curve growth for every experimental autopopulation in the planting growth season. The vegetative propagation of the population and the autopopulation was more seriously affected by the sexual development and the growth. The plant size was rigorously restricted by the population density, and the change of regularity followed–0.6699 power between mean weight per plant and the population density in the period of maximum biomass in the natural cutting grassland. The comprehensive analysis showed that A. chinense population depended on vegetative propagation and the population regeneration of the self-regulation, but the population hadnt far reached the most density which could be accommodated by standing conditions in the natural cutting grassland in the Songnen Plain of China.