2009年春季兰州大学花粉雨研究

目的]探讨大气花粉沉降过程中,花粉类型和开花植物的关系以及花粉丰度与气象因子间的关系。方法]以高10 m平台自然沉降方法获取2009年兰州大学校园春季花粉的沉降记录,并分析花粉沉降数量、持续时间、沉降种类与周围植被及天气的关系。结果]主要花粉种类为杨属、柳属、泡桐属、悬铃木科等,其花粉沉降数量、持续时间和校园相应植被的花期相一致;花粉沉积种类和丰度主要受风力影响,风力越大种类越丰富,基本没有外来花粉;尘暴天气未观测到孢粉组合的明显变化。结论]该研究可为自然植被花粉的现代过程研究奠定基础。

Study on the Pollen Rain in Lanzhou University in Spring, 2009

Objective]The aim was to explore the relationship of pollen types and blooming plants,pollen fertility and meteorological factors during the falling process of pollen in the atmosphere.Method]The falling record of pollen in Lanzhou University in spring in 2009 was obtained by 10 m platform natural falling method.The pollen falling number,duration,relationship among falling types and surrounding plants,as well as weather were discussed.Result]Main pollen types included Populus L.,Salix,Paulownia and Platanaceae.Its pollen falling number,duration was consistent with the flowering period of corresponding plants in the garden;the classification and richness of falling of pollen was influenced by wind.The larger the wind was,the richer the variety become.There was basically no pollen from outside.The authors failed to observe the distinct changes of palynological assemblage in sandy storm weather.Conclusion]The study could lay basis for the study of the modern progress of natural plants pollen.