中文摘要：

摘要选取黄土高原东部边缘地区的山西省浑源县为研究对象，通过对比2007～2009年空气花粉数据，研究和描示夺。e化粉组合特征、通镀及子之川的火系。化粉绀合特征显爪浑源地区2007～2009年化粉组合慕本一致，以草本植物花粉占绝对优势（80．9％），显示啦原植被的特点。不H季1，和年份花粉通母的对比显示，2007～2008年度春季木本植物和蒿属、黎科等花粉的通量离于2008～2009年度，而其他季节均明显低于2008～2009年度，尤以蒿属花粉最为明显；两年花粉通繁的峰值，出现时间基本一致，但2008～2009年间秋冬季冉草奉花粉通量明显较上年高。花粉通帚与常弛气候闪子RDA分析硅示：该研究区主要花粉类酗通量主要受平均风速、最大风速拧制，其次为相对湿度、温度和降水，风向时其也有一定的影响。其中，木本植物化粉通节主要受平均风速影响；草本植物则受风向影响较大，北-西北风有利于草本植物，特别是蒿属、藜科、菊科、禾本科等花粉数母的增加。各季节化粉通帚与气候因子的RDA分析显示，春季化粉通毓受温度的影响最显著；夏季受最大风速风向及最大风速的影响最大；秋、冬季受风速影响最为显籍。

英文摘要：

This paper tries to reveal the characteristics of airborne pollen assemblages and their relationship with climatic factors based on the pollen trap data collecting from 2007 to 2009 at the eastern Loess Plateau in Hunyuan County, Shanxi Province. The airborne pollen assemblages show that the herbaceous taxa dominate the pollen assemblages with their percentages higher than $0.9% , which is consistent with the steppe vegetation in this study area. The pollen influxes of trees and Artemisia and Chenopodiaceae in 2007- 2008 are higher than that in the spring of 2008-2009, but lower than that in other seasons of 2008. The peak time of pollen influxes is similar for the two study years, while the herbaceous pollen influxes coming from fall and winter of 2008-2009 are obviously higher than in 2007 ~ 2008. The RDA analysis between pollen influxes and climate factors show that the pollen assemblages at Hunyuan are mainly influenced by the average wind speed and maximum wind speed, then by the relative humidity, temperature and precipitation. In addition, the wind direction also has some effects, and the influxes of different pollen taxa are influenced by different climatic factors. The arboreal pollen influxes are mainly influenced by the average wind speed, but the herbaceous pollen influxes have more significant correlation with the wind direction. Because the wind in the study area usually comes from north to northwest, which will bring more steppe pollen taxa, such as Artemisia, Chenopodiaceae, Asteraceae, Poaceae etc. The RDA analysis of pollen influxes and climatic factors in different seasons show that temperature is the major factor to the pollen influxes in spring, while the wind direction of maximum wind speed become more important in summer, and the wind speed shows significant correlation with pollen influxes in winter and autumn.