Spatial distribution difference of radiation-driven effect in China regional central cities

The spatial distribution difference of radiation-driven function of regional central cities in China is that metropolitan area is an urbanization spatial form with megacities, megacities or megacities with strong radiation-driven function as the center and 1 hour commuting circle as the basic scope.

At present, there are 10 metropolitan areas with more than 30 million people,10 metropolitan areas with 20-30 million people in Hefei, Bengbu, Chengyu and Hangzhou, and/kloc-0 metropolitan areas with 0-20 million people in Xi 'an and Ning Hang.

China's 34 metropolitan areas have gathered about 63% of the permanent residents with a land area of 18.6%, creating about 78% of GDP, and most of them are in a state of continuous inflow.

In 2022, Shanghai, Shenzhen, Beijing and Guangzhou have the highest development potential, followed by Suzhou, Wuxi, Changzhou, Nanjing, Chengdu, Hefei, Changsha, Zhuzhou and Xiangtan.

Characteristics of metropolitan areas:

1, Shanghai metropolitan area: the "strong core" of the Yangtze River Delta urban agglomeration, radiating the surrounding metropolitan areas. In 20021year, the GDP of Shanghai metropolitan area reached 12.6 trillion yuan, accounting for 54.5% of the Yangtze River Delta urban agglomeration, and there were five cities with GDP exceeding one trillion in the circle.

2. Shenzhen Metropolitan Area: an entrepreneurial paradise for young immigrants, a big economic city and a small land city. The rapid growth of population and economy in Shenzhen metropolitan area is not only a paradise for young people to start businesses, but also one of the "hard cores" of Pearl River Delta urban agglomeration, forming a "two-legged" development pattern with Guangzhou metropolitan area.

3. Beijing Metropolitan Area: From single center to deconstructing the function of non-capital, Tongzhou District and "three northern counties" develop in a coordinated way. Relieve the function of Beijing's non-capital, and change from the pie-spreading single-center radiation to the dense multi-group pattern. Form an urban spatial structure of "one core, one main and one auxiliary, two axes, multiple points and one side".

4. Guangzhou Metropolitan Area: Greater Bay Area's modern manufacturing center is in the same city as Guangzhou and Buddha. From Guangfo City to Guangfo Zhao Metropolitan Area, Guangfo City has been basically realized, and the total economic output of Guangfo City is equivalent to that of Guangfo City.