title: Adaptation to urbanization impacts on drainage in the city of Hohhot, China.
abstract: This study presents a quantitative assessment of urbanization effects on hydrological runoff and drainage network in the city of Hohhot, China. The evolution of urban spatial morphology for the historical years (1987-2010) and projected year (2020) is described by changes in geographic information system (GIS)-based land use maps and further represented in hydrological parameters in the Storm Water Management Model (SWMM) simulation. The results show the levels of service of historical drainage were too low to have dominant impacts on flood risks, and hence a significant upward trend in catchment runoff response was observed over time. Comparisons with changes in system overloading indicate that the relative increase in flood risk is greatest at the early stage of urbanization with relatively low levels of development. The proposed adaptation measures based on a cost-effective optimal approach was found feasible to significantly improve the drainage performance and mitigate the increasing flooding impacts.
authors.affiliation: School of Civil and Transportation Engineering, Guangdong University of Technology, Waihuan Xi Road, Guangzhou 510006, China E-mail: qiaz@gdut.edu.cn.
authors.forename: Qianqian
authors.initials: Q
authors.lastname: Zhou
authors.affiliation: China Water Resources Pearl River Planning Surveying & Designing Co., Ltd, No. 19 Zhanyizhi Street, Tianshou Road, Guangzhou 510610, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Ren
authors.affiliation: School of Civil and Transportation Engineering, Guangdong University of Technology, Waihuan Xi Road, Guangzhou 510006, China E-mail: qiaz@gdut.edu.cn.
authors.forename: Miaomiao
authors.initials: M
authors.lastname: Xu
authors.affiliation: China Water Resources Pearl River Planning Surveying & Designing Co., Ltd, No. 19 Zhanyizhi Street, Tianshou Road, Guangzhou 510610, China.
authors.forename: Nini
authors.initials: N
authors.lastname: Han
authors.affiliation: School of Civil and Transportation Engineering, Guangdong University of Technology, Waihuan Xi Road, Guangzhou 510006, China E-mail: qiaz@gdut.edu.cn.
authors.forename: Heping
authors.initials: H
authors.lastname: Wang
mesh_terms: D002681:China; D002947:Cities; D002958:City Planning; D004323:Drainage, Sanitary; D055868:Floods; D040362:Geographic Information Systems; D062070:Hydrology; D008962:Models, Theoretical; D011891:Rain; D014507:Urbanization