【摘要】 山西西部吕梁山中北段关帝山和芦芽山地区7个不同植被类型共计15个表土样品和7个捕捉器样品表土花粉组合特征和花粉通量研究表明:(1)表土和捕捉器样品花粉组合中主要类型与植被组成中优势类型一致。(2)关帝山与芦芽山现代花粉组合特征差异明显,芦芽山地区花粉组合中草本花粉占优势,百分比多高于50%,乔木花粉百分比多低于50%,花粉通量平均为27194 grains/(cm.2a);关帝山乔木花粉占优势,百分比多高于50%,草本花粉多低于30%,花粉通量平均为57961 grains/(cm.2a)。(3)松属、云杉属和蒿属花粉在表土样品中的百分比远高于捕捉器样品,显示较强的保存能力;落叶松属、桦属和栎属花粉在表土样品中的百分比明显低于捕捉器样品,显示花粉保存能力相对较差。(4)样品聚类分析和DCA分析结果显示:二者分析结果具有很好的一致性,花粉组合最主要的控制因子是温度。更多还原

【Abstract】 A total of 15 surface soil samples and additional 7 pollen trap samples form middle(Guangdi Mts.) and northern(Luya Mts.) sections of Luliang Mountains,Shanxi Province,were palynologically analyzed.The pollen percentage and influx results show that:(1)Major pollen types in most samples reflect dominant members of the local plant communities.(2)In both surface and trap samples,pollen assemblages show significant difference between Guandi Mountains and Luya Mountains: in most of Luya Mountains,non-arboreal pollen grains exceeds 50% of the total pollen sum and the pollen influx averaged for all the sites is 2.7×104 grains/(cm2·a).In Guandi Mountains,however,arboreal pollen becomes dominant(>50%) NAP percentages drops down to less than 30%.The average pollen influx reached 5.8×104 grains/(cm2·a):(3)The percentages of Pinus,Picea and Artermisia are higher in surface soil samples than that in pollen trap samples, indicating their higher preservation potential in soil.However the percentages of Larix Betula and Quercus are lower in surface soil than in pollen traps suggesting their relatively lower preservation potential in soil.(4) Both Cluster analysis(CLA) and detrended correspondence analysis(DCA) show similar results with temperature as the important environmental factors to control pollen assemblages.更多还原