摘要
根据表土取样中松属(Pinus)花粉百分含量,及植被中松的百分含量统计,认为纯松林中,松粉占90%以上。无松地段,一般含量为30%以下。除产量外,对花粉散布影响最大因素是气流和地形。在松的混交林中,共生乔木种类花粉的行为直接影响松粉统计效果。用幂回归计算得到的松粉与植物百分含量的拟合曲线,具有有效参考价值。尽管松粉产量巨大而又传布规律复杂,其数量规律可算是比较稳定的。
Based on percentages of Pinus pollen in surface samples and that of Pinus vegetation,the data indicates that,in Pinus forest its pollen is more then 90% of total tree pollen,while in non-pine area it is usually less than 30%.The factors influencing dispersal of the Pinus pollen, besides production,are air currents and landform.In the Pinus mixed forest the behavior of as- sociate tree pollen has great effect on statistical result of Pinus pollen percentage.To estimate quantitatively the relationship between Pinus plant and its pollen,two curves are fitted by po- wer regression.Although Pinus pollen has great productivity and complex dispersal characte- ristics,the relationships between Pinus trees and Pinus poen shown in our data are relatively consistant.
基金
中国科学院科学基金资助的课题
关键词
松属
花粉
植物
数量关系
Pinus pollen
Plant
Quantitative relationship
