中文摘要：

喷雾器的一些地实验在过去的 30 年在中国在干旱、半干旱的区域上被执行了，但是有很少听说半 -- 黄土的干旱区域高原。用版本， 2.0 从 AERONET (喷雾器机器的网络) 铺平 2.0 数据集 Lanzhon_city 地点，喷雾器光性质在在空气 pollrtion 经常最经常发生了的冬季和小枝的尘封、非尘封的时期期间被表明。在为春天的 Lanzhou 和北京之间的一样的参数的比较也被分析。一些新信息有关喷雾器被获得在黄土的半干旱的区域上的光性质高原。结果证明在尘封、非尘封的时期期间测量的喷雾器性质在 Lanzhon 是显著地不同的，特别地在春天，并且与那些也不同在北京。

英文摘要：

Some field experiments of aerosols had been carried out over the arid and semi-arid regions in China over the past 30 years,but there were little learning of the semi-arid region of Loess Plateau.Using Version 2.0 Level 2.0 dataset from the AERONET（Aerosol Robotic Network）Lanzhou_city site,the aerosol optical properties during dusty and non-dusty periods in winter and spring when air pollution frequently occured most frequently were demonstrated.A comparison of the same parameters between Lanzhou and Beijing for spring was also analyzed.Some new information was gained concerning aerosol optical properties over the semi-arid region of Loess Plateau.The results show that the aerosol properties measured during dusty and non-dusty periods are significantly different at Lanzhou,particularly in spring,and also different from those at Beijing.