摘要
自1985年夏至1986年夏,笔者用漏斗作为花粉收集器,收集长白山红松暗针叶林的现代花粉雨,用体积及外加花粉两种方法计算出花粉沉积率。将植物与其所产生的花粉作数量比较,得到各类乔木花粉的代表性。并讨论在同一植被带内用花粉收集器所得与从表土中分析所得两者的花粉谱间的异同及其产生的原因。
In order to study pollen rain six funnel-like pollen traps were set up on tree trunks 1.3m above the ground in a fir-spruce forest in.Changbai Mt.at 1,150 m a.s.1,for a time interval from June 1985 to August 1986.Pollen influx values were calculated by volumetrical and exo- tic pollen methods(see Table 1).Pollen representation of each major tree type,e.g.Pinus, Abies,Picea,Betula,Larix and some decideous broad-leaved trees,was deduced from a com- parison between the percentage of the tree typ in pollen spectrum and that in forest.The pollen spectrum obtained from pollen trap was compared with that extracted from surface sample taken from the same vegetation zone;the differences and their possible causes are also discussed.
基金
国家自然科学基金会资助的课题
