A Research To The Mechanism And Adjustment Methods Of Urban Sprawl Of Guangzhou

As a new urban spatial expanding mode, urban sprawl 1st occurred in America during 1920s-1930s, and got a quick development after the war. Urban sprawl depletes lots of land resourse, destroys agricultural environment, makes developments more traffic-dependent, and harms the health and security of human body.After the Reform-and-Opening Policy of 1979, the urban sprawl grew to some extent in Guangzhou, and reached its climax as the constructing of projects related to the 9th National Games. At present, Guangzhou exhibits apparent characterstics of urban sprawl in aspects such as population distribution, compactness, density of new developments, land use mix, continuity, accessibility, etc. As urban sprawl advances, farmland has been decreased, open space reduced, environment pollution and the frequency of red tide increased, traffic deteriorated, social segregation rose, and these add up to affect the efficiency and the sustainable development of Guangzhou. Seven mechanisms, including the economic development and globalization, the constructing of major projects, motorization and the fast growing of express transportation, large scale real estate developments at the fringe of urban, the adjustment of local regionalism, as well as policy factors have led to the sprawl of Guangzhou. Moreover, the latest policy factors lie on the bottom of urban sprawl causes, so they are also key elements to urban sprawl restraint of Guangzhou.To hold back urban sprawl tendency of Guangzhou, we should adopt the concept of Smart Growth, pay more attention to the quality of growth, make out far-sighted traffic policies and industrial policies, and give fully demonstration before the start of major projects. At the same time, amend policies related to urban planning, land use and land property, coordinate relationship between adjacent districts.