Abstract: Based on percentages of Pinus pollen in surface samples and that of Pinto 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 associate tree pollen has great effect on statistical result of Pin,ts pollen percentage. To estimate quantitatively the relationship between Pinus plant and its pollen, two curves are fitted by powet regression. Although Pinus pollen has great productivity and complex dispersal characteristics, the relationships between Pinus trees and Pinus pollen shown in our data are relatively consistant.

Key words: Pinus pollen, Plant, Quantitative relationship