The average temperature in the month of 65438+ 10 north of the Huaihe River line in Qinling Mountains is below 0℃, and the annual precipitation is below 800 mm. The temperature zone belongs to the warm temperate zone and semi-humid zone, with large temperature difference, dry air and many extreme weather. Dry season refers to a month or months with little rain and drought in a certain climate type.
Qinling-Huaihe Line (or Qinling-Huaihe Line for short) is the geographical dividing line between the north and south (especially the east) of China. There are obvious differences between the north and the south of this line in natural conditions, agricultural production methods, geographical characteristics and people's living customs.
Extended data:
Geographical significance of Qinling-Huaihe line
Climate dividing line ① The average temperature in June 5438+1October north of Qinling Huaihe River Line was below 0℃, and in June 5438+1October south of Qinling Huaihe River Line was above 0℃; ② The annual precipitation in the north is below 800 mm, and that in the south is above 800 mm; ③ The temperature zone in the north belongs to warm temperate zone, while the temperature zone in the south belongs to subtropical zone; ④ The northern part belongs to semi-humid area and the southern part belongs to humid area.
The dividing line of river hydrological characteristics is in the north of Huaihe River in Qinling Mountains-small water volume, short flood season, large sediment concentration and ice age; South of Huaihe River in Qinling Mountains-large amount of water, long flood season, small sediment concentration and no ice age.
The dividing line of soil types is fertile cinnamon soil (yellow soil) north of Huaihe River in Qinling Mountains. There are many barren red soils south of Huaihe River in Qinling Mountains.
The boundary of natural vegetation types is temperate deciduous broad-leaved forest north of Huaihe River in Qinling Mountains. South of Huaihe River in Qinling Mountains-subtropical evergreen broad-leaved forest.
The dividing line of agricultural production is in the north of Huaihe River in Qinling Mountains-the farming system is three crops every two years or one crop every year, the cultivated land is mainly dry land, and the main crops are wheat, corn, cotton and peanuts; South of Huaihe River in Qinling Mountains-The farming system is two or three crops a year, with paddy fields as the main cultivated land and rice, wheat, cotton and rape as the main crops.
References:
Baidu Encyclopedia-Qinling Huaihe Line