The dust weather of Northwest China during the Qing Dynasty
清代西北地区的沙尘天气

Through overall reviewing and analyzing History Draft of Qing Dynasty,Actual Annals of Qing Dynasty,local chronicles and other historical books about Northwest China compiled in periods of the Qing Dynasty and the Republic of China,it is concluded that during the Qing Dynasty,there were 62 dust weather events confirmed from historical books about the study area.Through analyzing these 62 dust weather events,it is found that the occurrence of dust weather in Northwest China fluctuated obviously with time.From 1650 to 1710 and from 1810 to 1910,the dust weather occurred frequently but with less frequency from 1710 to 1810 in Northwest China.In terms of season,the dust weather mainly occurred in spring;and in terms of spatial distribution,there were four dust weather frequently occurred regions,including the Guanzhong Plain region,centered around Xi'an and Weinan,the Loess Plateau region Zhenyuan and Qingyang in eastern Gansu,the Hexi Corridor region,Centered around Zhongwei,Gulang,Yongdeng and Shandan,and the Loess Plateau region,Mizhi and Zichang in northern Shaanxi.The occurrence of dust weather in Northwest China during the Qing Dynasty was connected closely with temperature change,but insignificant with precipitation change.