中文摘要：

中国北方多个城市空气颗粒物来源解析结果表明，开放源是空气颗粒物污染的主要来源，裸土风蚀型开放源是主要的排放源类。对裸土风蚀型开放源起尘机制进行了诠释，提出了裸土风蚀型开放源、裸土风蚀起尘、裸土风蚀尘的概念，并对裸土风蚀型开放源的风蚀影响因素进行了研究，为城市空气质量达标及空气颗粒物污染防治提供科学参考。

英文摘要：

The data of particulate matters in ambient air for many northern cities of China showed that the open sources were primarily responsible for the observed particulate matters and that the wind erosion of bare soil was a major open source of the ambient air particulate matters. The paper presented fundamentals and relevant discussions on the subjects of open sources, bare soil, wind erosion, jump-start dust blowing wind velocity, the mechanism of open source blowing dust resulting from wind erosion of bare soil and the affecting factors. It provides helpful information for the control of particulate matters in the air and the improvement of urban air quality.