How is climate divided?
Based on the accumulated active temperature of each region, the zones are divided according to the heat indicators required for agricultural production:
1. 23°26′ N (Tropic of Cancer) to 23° 26′ S (Tropic of Capricorn) is the tropics.
2. The northern latitude (southern latitude) 23°26′ to the northern latitude (southern latitude) 66°34′ (Arctic Circle and Antarctic Circle) is the north and south temperate zones.
3. From 66°34′ north latitude (southern latitude) to 90° north latitude (southern latitude) are the north and south cold zones.
Most of China is located in the north temperate zone, and a small part is located in the tropics; it is divided into cold temperate zone (northern Heilongjiang, eastern Inner Mongolia), mid-temperate zone (Northeast, most of Inner Mongolia, northern Xinjiang), and warm temperate zone (Yellow River Most areas in the middle and lower reaches, southern Xinjiang);
Subtropical (south of the Qinling Mountains and the Huaihe River, east of the Qinghai-Tibet Plateau), tropical (southern Yunnan, Leizhou Peninsula, southern Taiwan and Hainan Province) and plateau climates.
Temperature zone rules
Climate zones are climate classification units that are roughly parallel to the latitudinal circle and distributed in a band around the earth. They are the largest climate regional units on the earth. Climatic zones are distributed in a certain order from low latitudes to high latitudes. The division of climate zones is determined by the most basic climate-forming factor - solar radiation.
The ancient Greek Aristotle once divided the earth's climate into five climate zones based on the Tropics of Cancer and the North and South Poles, namely: the tropics, the north temperate zone, the south temperate zone, the north frigid zone, and the south frigid zone. It is called astronomical climate zone or geographical climate zone. This ancient method of dividing climate zones is only based on the height of the sun and the length of day and night, so it is also called a solar climate zone.