Vegetative reproduction characteristics of Leymus chinensis populations in Tumuji National Nature Reserve, Inner Mongolia ANALYSIS AND MEASUREMENT OF THE FITNESS OF SEED REPRODUCTION AND VEGETATIVE REPRODUCTION OF CLONAL PLANT Vegetative Reproduction and Biomass Allocation Characteristics of Mikania micrantha H.B.K under Different Seedling Periods Structure and development regulation on dormancy modules of Hordeum brevisubulatum clone on cultivated condition in the Songnen Plains of China Clone growth and its age structure of Leymus secalimus modules in the Songnen Plain of China Dispersal of staghorn sumac in Beijing areas Relationships between plant reproductive strategy and disturbance Studies on vegetative reproduction pattern of Kingdonia uniflora Relationship between vegetative potential populations and actual populations of Agropyron michnoi