北京及周边地区大气边界层中花粉气溶胶的观测.pdf

7 27 2007,27(4) 477~481 China Environmental Science * (, 100029) , , , 3 , , 2 .,,: ;,(r=−0.227,P 0.012), (r 0.288,P 0.001).,. X131 A 2007 * Measurement research of pollen aerosols in atmospheric boundary layer of Beijing and around areas. DU Rui (Institute of Atmosphere Physics, Chinese Academy of Science, Beijing 100029, China).China Environmental Science, 2007,27(4) 477~481 Abstract 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 . Key words near surface boundary layer pollen aerosols diurnal variation seasonal variation weather factor . ,, ,, ,