摘要
In the past 30 years,China has experienced development at full speed,and the cities have expanded rapidly.There have been dozens of megacities with millions of people.Due to the lack of preparation of various factors,these cities will inevitably also have some urban diseases similar to those in the mega-cities of the world.How to develop mega-cities,especially how to ensure the sustainable development of mega-cities,such as Beijing,Shanghai,Guangzhou,etc.,is a question that must be answered.This paper mainly discusses the challenges faced with city planning,especially for mega-cities,taking Beijing as an example and analyzes from following aspects:institutional challenges,demographic challenges,and environmental challenges,and hopes to provide references for city planners.
