Where is Qinling-Huaihe River?

The Qinling-Huaihe line runs through Gansu, Shaanxi, Henan, Anhui and Jiangsu provinces, which is an important geographical dividing line in central and eastern China. There are significant differences in climate, rivers, vegetation, soil and agricultural production between the north and the south.

Qinling-Huaihe Line is the geographical dividing line between north and south 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.

There is an east-west mountain range in central China-Qinling Mountains. It is like a "wind wall", which blocks cold air from going south in winter and southeast monsoon from going north in summer.

Since ancient times, due to the special geographical environment in which the Qinling Mountains are located and the differences in climate change, cultural landscape and living customs between the north and the south of the Qinling Mountains, it has been called the dividing line between the north and the south of China. Traditionally, the south of Qinling Mountains is the south of China, and the north of Qinling Mountains is the north of China. However, the official name of Qinling Mountain began to exist only in the Han Dynasty.

Extended data:

In fact, the natural dividing line between north and south in China is the climate dividing line first. As far as the hot zone is concerned, it is the dividing line between the northern warm temperate zone and the southern subtropical zone; In the division of water, it is the dividing line between the arid and semi-humid climate in the north and the humid climate in the south; In the division of rainy season and dry season, it is the dividing line between spring drought and summer rain climate in the north and spring rain, plum rain and summer drought climate in the south.

However, this transition and change is completed through a fairly wide belt. We can't see any changes in climate, agriculture, natural landscape, etc. on both sides of the Huaihe River, which are more than ten or twenty kilometers apart. In fact, because the Huaihe River area is mainly a plain area, the cold and warm air flow between the north and the south is unimpeded, and it is really impossible to produce a clear north-south dividing line.

Take "orange crossing Huaihe River, turning north into bitter orange" as an example. Due to the strong cold air in the central and southern parts of eastern China in winter, it often brings fatal low temperature to citrus. Therefore, even on the banks of the Yangtze River south of Huaihe River, except for some favorable areas, citrus cultivation generally has no economic value.

References:

Baidu Encyclopedia-North-South Boundary Line