An interesting theory is making the rounds. It claims to identify turning points in population scale and density where the growth of Chinese cities' sustainability will slow down or stall. [Hong Kong company registration]The experts behind the theory are urging improvement in China's urban management and a change in the way cities are laid out with no goal beyond generating revenue.
It's difficult to improve a Chinese city's sustainability by boosting per capita GDP alone, particularly once the population exceeds 4.5 million or population density reaches 8,000 people per square kilometer, according to a recent study from the Urban China Initiative, a joint initiative of a panel of institutions, including consultancy McKinsey & Co Inc.
The Urban Sustainability Index displays positive correlations between environmental sustainability and per capita GDP, population size and density. But that's only when a city has fewer than 4.5 million residents or density of less than 8,000 people per sq km.
"Those 'turning points' in China are unique and don't hold in cities across the world," said Li Shantong, senior research fellow at the Development Research Center of the State Council.
Consider Tokyo, whose density is about 14,440 people per sq km, about the same as in Shanghai. Tokyo's per capita GDP was $72,000 in 2011, five times the level in Shanghai.
But Tokyo wins out in all aspects over Shanghai, such as livability, traffic management and social security.
"These facts suggest that, for further growth of sustainability, our cities must accelerate steps to narrow the gap between them and other global cities regarding urban management capacity," [Hong Kong Company Formation] Li said.
"China, on the one hand, has witnessed the absurd phenomenon of 'ghost cities' and excess investment in property development. On the other hand, it has large, densely packed cities that have scant traffic management and medical resources," said Li Xun, vice-president of the China Academy of Urban Planning and Design.
"It requires a careful approach to improve and balance (this situation) for our cities' sustainability," he added.
Urban administrators have been too obsessed with economic results, resulting in cities whose layout "drags down the pace of sustainable development", said Cao Jianhai, a professor at the Institute of Industrial Economics of the Chinese Academy of Social Sciences, a top government think tank.
"In terms of city development, Chinese municipal governments have always concentrated on maximizing interests and collecting tax revenue over social welfare and the environment," said Cao.
China's local fiscal revenue in 2013 reached 6.8 trillion yuan ($1.1 trillion), with land transfer fees accounting for almost 60 percent.
With that much money at stake, [Hong Kong Company Formation]local governments tend to be reluctant to allocate land for public use, such as green space.
"If this short-sighted behavior doesn't cease, the constraints on cities' sustainability will never be broken," Cao said.
Another factor is foreign direct investment. That has also found to be positively correlated with the level of sustainability, until it reaches $3 billion.
At least 11 cities, including Shanghai, Beijing and Shenzhen, home to 21 percent of China's urban population, have crossed all three turning points, the study found. For most of the 11 cities, additional improvements in sustainability as a result of a growing population or higher GDP will be very limited.
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