What does the Heihe Tengchong Line mean?

China population density demarcation line.

Heihe-Tengchong Line, namely Aihui-Tengchong Line, or Hu Huanyong Line, is an imaginary straight line that runs through China. It is the contrast line for dividing the population density of China proposed by Hu Huanyong, a famous geographer in China (1901998) in 1935. This line extends from Heilongjiang City in the northeast of China to Tengchong County in the southwest of China.

It roughly divides the distribution of China's population in this area, reflecting the differences between the southeast and northwest of China. Aihui-Tengchong Line occupies an important position in China's population geography, which is of great significance in geography (especially population geography and human geography) and demography. It is a unique line and watershed in the development of historical geography in China.

Extended data:

Reasons for formation:

1, the first is the dividing line of population geography. From northeast to southwest, from Aihui in Heilongjiang to Tengchong in Yunnan, it is the dividing line of China's population geography. Taking this line as the boundary, about 94% of the population lives in the southeast of China, accounting for 43% of the land area, and about 6% of the population lives in the northwest of China, accounting for 57% of the land area.

2. It is the dividing line of physical geography. It is basically consistent with the 400 mm precipitation line in China, and the geographical and climatic conditions on both sides of the strait are also very different. Therefore, it is not only the geographical boundary of China's population and nationalities, but also the natural geographical boundary of China.

3. It is the dividing line of historical geography. Historically, this line is the dividing line between the Central Plains Dynasty and the territory directly controlled by the central government, the lifeline of Han nationality's war and peace, and the dividing line of China's historical geography.

Baidu encyclopedia-Heihe-Tengchong line

Baidu Encyclopedia —— An Important Geographical Boundary of China