Abstract
In the high-speed urbanization of China, urban fringe is at the forward position of urban expansion whose ecological security pattern, special form, land uses, industrial structure and traffic model would determine the future of the city. Based on PLUREL program, this article analyzed the negative and positive influences of urban fringe to urban expansion, pondered the reasons behind those negative influences and put forward advice to Wise Urban Expansion in Chengdu such as crack-shape land layout, mixed land use, tie-in implementation for ecological Greenland, conversion from traditional agriculture to ecological agriculture and so on.
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