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Sustainability 2014, 6(10), 6488-6508; doi:10.3390/su6106488

Urban Land Pattern Impacts on Floods in a New District of China

1
State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 73 East Beijing Road, Nanjing 210008, China
2
University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China
*
Author to whom correspondence should be addressed.
Received: 4 June 2014 / Revised: 15 August 2014 / Accepted: 5 September 2014 / Published: 26 September 2014
(This article belongs to the Special Issue Landscape and Sustainability)
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Abstract

Urban floods are linked to patterns of land use, specifically urban sprawl. Since the 1980s, government-led new districts are sweeping across China, which account for many of the floods events. Focuses of urbanization impact on floods are extending gradually from hydraulic channels, to imperviousness ratio, to imperviousness pattern in urban areas or urbanized basins. Thus, the paper aims to explore how urban land pattern can affect floods in urban areas to provide decision makers with guidance on land use and stormwater management. Imperviousness was generally correlated with spatial variations in land use, with lower imperviousness in less dense, new districts, and higher imperviousness in more dense, uniform/clustered development in local areas adjacent to hot nodes. The way imperviousness and channel are organized, and the location of imperviousness within a catchment, can influence floods. Local government’s approach to new district planning, in terms of zoning provisions, has only considered some development aspects and has not adequately integrated flood management. A key issue for the planning should been done to adequately cater for flooding, particularly considering the benefits of keeping natural conveyance systems (rivers) and their floodplains to manage flood waters. View Full-Text
Keywords: urban land pattern; catchment; imperviousness; channel; floods; new district of China urban land pattern; catchment; imperviousness; channel; floods; new district of China
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Su, W.; Ye, G.; Yao, S.; Yang, G. Urban Land Pattern Impacts on Floods in a New District of China. Sustainability 2014, 6, 6488-6508.

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