The weather in northern Xinjiang

(1) Shihezi, Urumqi and other places are located on the windward slope of Tianshan Mountain, and the snowfall is larger than other areas. Snowmelt floods and geological disasters such as landslides and mudslides.

(2) South Xinjiang Basin is located on the leeward slope of Tianshan Mountain, with little precipitation; Strong wind; The surface is rich in loose particles and lacks vegetation cover.

Test and analysis: (1) According to the geographical position shown in the figure, we can see the influence of topography on climate. Shihezi and Urumqi are located in the northern Tianshan Mountains, which are windward slopes of northerly winds, while northern Xinjiang is located in basins with less precipitation. The cooling after cooling may bring snow melting, and a large amount of surface runoff may cause floods, even landslides, mudslides and other disasters in mountainous areas. (2) Sand blowing, floating dust or sandstorm are affected by cold front weather, and their natural causes are also related to factors such as strong wind, loose surface materials, less vegetation and drought.

Comments: This question is generally difficult. Grasping the general situation of China's regional geography is the key to solve the problem, and we can analyze the influence of topography on climate and the causes of sandstorms.