Adaptation to urbanization impacts on drainage in the city of Hohhot, China.
Adaptation to urbanization impacts on drainage in the city of Hohhot, China.
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DOI：
10.2166/wst.2015.478
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发表时间：
2016-01
期刊：
影响因子：
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通讯作者：
Qianqian Zhou;Yiyong Ren;Miaomiao Xu;Nini Han;Heping Wang
中科院分区：
文献类型：
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作者：
Qianqian Zhou;Yiyong Ren;Miaomiao Xu;Nini Han;Heping Wang
本研究对中国呼和浩特市城市化对水文径流和排水网络的影响进行了定量评估。历史年份（1987-2010）和预测年份（2020）的城市空间形态演变通过基于地理信息系统（GIS）的土地利用地图的变化来描述，并进一步以雨水管理模型（SWMM）模拟中的水文参数来表示。结果表明，历史排水系统的服务水平太低，无法对洪水风险产生主要影响，因此随着时间的推移，观察到流域径流响应呈显着上升趋势。与系统过载变化的比较表明，在发展水平相对较低的城市化早期阶段，洪水风险相对增加最大。所提出的基于具有成本效益的最佳方法的适应措施被认为是可行的，可以显着改善排水性能并减轻日益严重的洪水影响。
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.