辽东半岛结缕草无性系种群构件生物量相关模型及形成规律

按生物构件的理论,分析了辽东半岛结缕草无性系种群叶片、叶鞘、分株、匍匐茎各构件生物量以及总生物量间的相关模型和构件生物量的分配、形成规律,探讨了其不同生物量基于种群大小(密度)的形成规律。结果表明,辽东半岛结缕草无性系种群的总生物量及各构件生物量均随着种群密度的增大而以线性函数增加,各构件生物量与总生物量以及各构件生物量间亦均以线性函数增加,生物量增加比率均表现为:分株>匍匐茎,叶鞘>叶片,总生物量增量的27.2%分配给叶片,29.2%分配给叶鞘,43.6%分配给匍匐茎,叶片,叶鞘和匍匐茎构件生物量的积累是按1∶1.1∶1.6比例形成。

Quantitative correlation models and formation patterns of modular biomass in clonal population of Zoysia japonica in Liaodong Peninsula of China

The total biomass and the biomass of modules(including leaf,sheath,ramet and creeping stem)of clonal population of Zoysia japonica in Liaodong Peninsula of China were measured and the study on the relationship between total biomass and module biomass,the formation patterns of biomass was carried out as well.The results indicated that both total biomass and the biomass of different modules increased with the population size(population density),the biomass of modules also increased with total biomass,and the biomass of leaf,leaf sheath modules also increased with the biomass of ramet by a linear model.The increasing ratios of ramet and leaf sheath were more than those of creeping stem and leaf respectively.Of the increased total biomass,56.43% and 43.57% of which were allocated to ramet and creeping stem respectively.The biomass ratio among leaf,sheath and creeping stem was 1∶1.1∶1.6.