Age structures of Spodiopogon sibiricus populations on weedy meadow and elm woodland in Songnen Plain, Northeast China.
In 2003 and 2006, investigations were made on the age structures of Spodiopogon sibiricus populations as well as the matter productivities and vegetative reproduction capacities of different age-class modules of the populations on the weedy meadow and elm woodland in Songnen Plain of Northeast China. At the two habitats, the tillers of S. Sibiricus all consisted of 2-3 age classes, and the rhizomes all composed of 4 age classes. Both the tillers and the rhizomes had the greatest proportion of 1- or 2-year-old, and the age structures were of expansive or stable. The 1- or 2-year-old tiller-node buds were dominant, and the rhizome topmost buds occupied 29.4% -45. 0% , being of significance to the population regeneration in the next year. The 1- or 2-year-old modules of the tillers and rhizomes had the highest matter productivity and vegetative reproduction capacity, and the rhizomes had higher vegetative reproduction capacity than the tiller-nodes.
国家科技期刊平台
NSTL
万方数据
维普
