When did the population distribution center of China first move from the Yellow River basin to the Yangtze River basin?

The plain in the middle and lower reaches of the Yellow River is the birthplace of the Chinese nation. Later, the population spread from the plain in the middle and lower reaches of the Yellow River to the Yangtze River and Pearl River basins in the south. Historically, the most direct reasons for China's population migration are immigration, war and natural disasters. During the Anshi Rebellion in the Tang Dynasty, the population distribution center of China first shifted from the Yellow River basin to the Yangtze River basin.

Trajectory of population migration in China

In the history of population migration in China, due to the influence of social system, economic development and many other factors in different historical periods, the situation of population migration is not the same.

(1) Ancient times: ① "Yongjia Rebellion" period. During the Yongjia period in the Western Jin Dynasty, decadent rulers brutally exploited and oppressed people of all ethnic groups. As a result, the people in the Yellow River Basin were displaced and forced to migrate to the Jianghuai Basin on a large scale (mainly to Jiangsu, Anhui, Hubei, Sichuan and other places). This is a landmark event that the population distribution center of China has shifted to the Yangtze River basin.

② "An Shi Rebellion" period. About1100,000 people moved south in the Tang Dynasty, which fundamentally changed the pattern of population distribution in China concentrated in the Yellow River Basin.

③ The "Jingkang Rebellion" period. It happened in the Northern Song Dynasty, and the war caused a large number of residents in the Yellow River basin to migrate to the Yangtze River basin, which was the biggest stage of population migration in the late Northern Song Dynasty.

④ The period of "Mongolian soldiers invading south". After Kublai Khan ascended the throne of Khan, he launched a war to destroy the Southern Song Dynasty, and a large number of residents moved to the Pearl River Valley to escape the war. After the above-mentioned population migration, the population in the south greatly exceeded the population in the north, and southern China became the most densely populated area in China. At the same time, the social economy in the south of the Yangtze River basin has developed greatly, which can be said to be the transfer of China's population center and cultural center from the Yellow River basin to the Yangtze River basin.

(2) Modern times: ① the period of "going west and going east". /kloc-After the imperialist invasion of old China, Russia and Japan in the late 9th century, the two countries competed to expand their power in the northeast and build railways; Plundering resources requires a lot of labor, forcing bankrupt farmers in North China to move to Northeast China.

(2) The period of "Southeast Coast Down to Nanyang". After European and American capitalism invaded Southeast Asia, in order to plunder the resources of Southeast Asia, they recruited bankrupt farmers from China as cheap labor for developing colonies and sold labor from China, which led to a sharp increase in the population of Southeast Asia.

(3) Modernity: From the founding of New China to the period of reform and opening up, China's population migration was influenced by the planned economy and directly guided by the government. Among them, the following have great influence:

The state has organized a large number of cadres, workers and technicians from big cities in the east to support the construction of the interior and frontier areas. & lt 1 & gt； Cadres go south. & lt2> supports new industrial bases and "third-line construction".

(2) mobilize a large number of demobilized soldiers and urban educated youth to participate in the construction of state-owned farms.

& lt 1 & gt； The officers and men reclaimed land and supported the frontier. & lt2> Young intellectuals go to the countryside.

(4) After 1980s: After the reform and opening up, China changed from a planned economy to a socialist market economy, and the population migration was directly guided by the state as spontaneous migration.

① Migrant workers' tide: Since the reform and opening up, with the rapid economic development in cities and coastal areas, a large number of surplus laborers have appeared in rural areas, leaving their hometowns and flooding into the economically developed southeast coastal areas for job hunting.

② Peacock flies southeast: After the reform and opening up, special economic zones and economic development zones have been established in the southeast coastal areas of China. Good working and living conditions have attracted a large number of scientific and technological talents, forming a situation of "peacocks flying southeast" and "one river flowing eastward".

③ Water conservancy project migration: Since the founding of New China, more than 86,000 water conservancy projects have been built nationwide, and 30 million mu of cultivated land have been flooded; Immigrants12.5 million people, of which the Three Gorges immigrants are the largest in China at present. By the end of 2009, the project was completed, with planned resettlement of1130,000 people. By the end of 2000, 250,000 people had been resettled.

(4) Western Development: In order to accelerate the development of the western region and promote China's economic development, social stability and national unity, the central government and local governments in the west have taken various measures to attract high-quality talents from the eastern region to flow to the west, forming a new population migration trend, that is, the population moves from east to west.

Looking at the population migration in China, it can be said that the population migration has enabled China to be preserved and developed in a larger area, further accelerating the integration of multi-ethnic groups and promoting the development of the Chinese nation. Therefore, population migration is the booster of China's historical and economic development.

Since you didn't give points, let's do it for the time being.