通辽地区近50年沙尘暴形成因素分析

Analysis of the Sandstorm Forming in Tongliao Area Within 50 Years

从通辽地区沙尘暴形成的历史气候背景和近代气候的变化两方面对通辽地区的沙尘暴形成进行阐述 ,指出松散的沙质地表和暖干化的气候在时间上的一致性是通辽地区沙尘暴形成的根本原因 .进一步分析表明 ,地表植被覆盖率的增长 。

The thesis analyses the forming factor of sandstorm in Tongliao area from both the historical climate background and the weather changing in recent years, pointing out that the coherence of the loosen terrene of the earth's surface with warmth-desiccation climate is the fundamental cause of sandstorm formation in Tongliao area. In addition, the sandstorm decreasing is directly resulted by the coverage rate increasing in recent years.