秦岭及黄土区现代栎林的孢粉组合研究

根据秦岭及黄土区六种栎林的表土孢粉分析，探讨了不同栎林孢粉组合的差异。资料表明，六种栎林在乔木、灌木、草本、藤本花粉和蕨类孢子组成和数量方面均有一定差异。据此，我们选出了３７个科属的植物作为定量判别的依据，提出了定量判别不同栎林的标准。

A STUDY ON THE SPORE-POLLEN ASSEMBLAGE OF MODERN OAK FORESTS IN QINLING MOUNTAINS AND LOESS AREA

On the basis of spore pollen analysis in the surface soil under six oak forests in Qinling mountains and loess area,the difference of spore pollen assemblage of various oak forests is discussed.The results show that the pollen of tree,bush,herb,vine and the sporo of pteridophyte are different in composition and content.According to the difference,37 families or genera of plants are chosen as basis for distinguishing different oak forests,and the quantity standard for distinguishing six oak forests is presented.Because the change for composition and content in the pollen of tree,bush,herb,vine and the spore of pteridophyte is consistent with the change in the ecology condition of different oak forests,the quantity basis determined for distinguishing six oak forests is coincidence with the actual situation.