Age structures of modules on Leymus chinensis clonal populations in the process of restoration succession after the flooded meadow in the Songnen Plains, China

Research on age structure is an important part of population ecology. Dynamics of population and community can be predicted based on age structure. By using the method of dividing age classes of perennial rhizome grass according to vegetative propagation generations of tiller nodes, the age structures of Leymus chinensis clonal population modules were studied in the process of restoration succession of the flooded L. chinensis meadow,and the restoration process of the flooded succession was forecasted in the Songnen Plains of China. L. chinensis is a typical clonal plant with vigorous vegetative propagation. The seeds in soil seed banks germinated at different time and formed unequal approximate circular clonal patches, which distributed in Carex duriuscula community in the process of restoration succession of the flooded L. chinensis meadow in the Songnen Plains of China.