The foggy weather in recent days

(1) Combined with the map 1, the areas with severe smog are mainly concentrated in the North China Plain;

(2) The area shown in Figure 2 is the industrial base of Beijing-Tianjin-Tangshan area, mainly involving Beijing, Tianjin and neighboring Hebei Province; This area is the largest comprehensive industrial base in northern China;

The advantage of base development is rich mineral resources; Convenient land and water transportation; Strong scientific and technological strength; Broad market, etc. ;

(3) Because coal and other minerals are used as fuel in industrial production, a large number of pollutants are discharged into the air, coupled with a large number of automobile exhaust emissions, heating in winter also discharges dust into the air, resulting in a large number of tiny dust particles, smoke particles or salt particles suspended in the atmosphere, forming smog. Therefore, it is known that the industrial sectors that may induce or aggravate smog in this area include coal industry and chemical industry.

(4) The industrial development in many areas in the south of China is no worse than that in the north, but the smog is light, mainly because the climate in the south of China is humid, there is much precipitation, the monsoon has a great influence, the air is easy to flow, and the tiny particles in the air are not easy to gather.

So the answer is: (1) North China; (2) hey; Comprehensive; Rich in mineral resources; Convenient land and water transportation; Strong scientific and technological strength; Broad market, etc. ; (3) Coal industry and chemical industry;

(4) The climate in southern China is humid, with more precipitation, which is greatly influenced by monsoon. Air flows easily, and tiny particles in the air are not easy to gather.