Climatic characteristics and causes of four geographical regions in China.

The climate characteristics of (1) are cold and dry in winter, high temperature and rainy in summer, belonging to temperate monsoon climate, mainly distributed in the northern region; The climate is characterized by high temperature and rain in summer and mild and little rain in winter, belonging to subtropical monsoon climate, mainly distributed in southern China; In winter, Leng Xia is hot and the precipitation is scarce, which belongs to temperate continental climate, mainly distributed in northwest China. It belongs to alpine plateau climate, mainly distributed in Qinghai-Tibet area.

(2) The area with the most precipitation in China is the south, and the northwest is far inland and far from the ocean, with the least precipitation. Due to its high altitude, the Qinghai-Tibet region has the lowest temperature in summer in China.

(3) "Far mountain and near Sichuan" is a remarkable topographical feature in Qinghai-Tibet region, and the most remarkable natural environment feature in this region is extremely cold.

(4) Desert and Gobi are widely distributed in the northwest, and the "Silk Road" passed through the northwest in history.

(5) Lotus roots, bamboo shoots and coconuts live in the south of the four districts, belonging to subtropical monsoon climate and tropical monsoon climate.

The climate is complex and diverse.

In different regions, different climatic types and characteristics have been formed due to different climatic factors. China is a vast country with a land area of 9.6 million square kilometers and a large latitude span.

Judging from the division of temperature zones, hot zones range from tropical, subtropical, warm temperate zone, middle temperate zone to cold temperate zone; Located in the east of Eurasia, east of the Pacific Ocean and west of Eurasia; The underlying surface is high in the west and low in the east, with a three-step distribution and mountainous plateau.

Divided from dry and wet areas, there are humid areas, semi-humid areas, semi-arid areas and arid areas. In addition, the same temperature zone can contain different dry zones and wet zones; There are different temperature zones in the same dry and wet area. Therefore, under the same climate type, there will also be differences in heat and humidity. The complexity and diversity of terrain also make the climate more complex and diverse.