摘要
利用改制的花粉采样仪,分别在北京,兴隆,香河3个不同的地点,对华北本底大气,大都市及其周围近郊城镇的近地面边界层大气中花粉气溶胶浓度的日变化和季节变化进行了近2年的连续观测.结果表明,花粉气溶胶浓度的日变化和季节变化显著,季节变化模式为:春季>秋季>夏季>冬季;统计分析显示花粉浓度与气象因子间具有显著的相关性,其与大气的相对湿度显著负相关(r=?0.227,P=0.012),与风速呈极显著正相关(r=0.288,P=0.001).花粉季节中,大气中花粉气溶胶的清除与风速和风向的变化也有明显的相关性.
Utilizing the changed pollen sampling apparatus, the diurnal and seasonal variations of pollen aerosols concentration in atmosphere near surface ground boundary layer of north China great cities and their neighboring cities and towns, were observed continuously near 2 years at 3 different sites of Beijing, Xinglong and Xianghe, respectively. The diurnal and seasonal changes of pollen aerosols were marked. The seasonal change mode was： spring 〉 autumn 〉 summer 〉 winter. Statistical results showed that pollen concentration varied significant, correlativity with weather factor clearly, negative correlation with relative humidity （r=-0.227, P=0.012）, and marked positive correlation with wind speed（r =0.288,P=0.001）, In flowering season, the cleaning out of the pollens around in atmosphere also had obvious correlativity with wind velocity and direction.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2007年第4期477-481,共5页
China Environmental Science
基金
中国科学院野外台站网络基金项目
中国科学院知识创新工程大气所领域前沿面上项目(IAP07213)
关键词
近地面边界层
花粉气溶胶
日变化
季节变化
气象因子
near surface boundary layer
pollen aerosols
diurnal variation
seasonal variation
weather factor
