Beijing (CNS) -- Deteriorating environmental quality caused by irrational urbanization in China has brought hidden dangers to the sustainability of cities, according to a green book released by the Chinese Academy of Social Sciences (CASS) on Thursday.
Irrational urban expansion includes the construction model of "overground first, underground second," the book says.
Under the current urbanization model, construction of drainage systems has been neglected, which has led to flood control difficulties in cities across the country.
Statistics released by the green book show that 62 percent of cities in China experienced flooding between 2008 and 2010, while 137 cities experienced multiple floodings during this period.
Local government should work to improve urban sewage systems, the green book says.
The book also points out that urban dwellers are bearing the brunt of deteriorating air quality caused by the high energy consumption of cities.
To optimize China's urbanization pattern, policy makers should develop and implement stricter emissions regulations, it says.
The green book also suggests that cities should work together to set up a pre-warning system to combat air pollution.
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