The changing pattern of urban flooding in Guangzhou, China

Huang, Huabing; Chen, Xi; Zhu, Zhanqiang; Xie, Yuhuan; Liu, Lin; Wang, Xianwei; Li, Kai

doi:10.1016/j.scitotenv.2017.11.358

Cited by 92 publications

(49 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The urban areas in Guangzhou are seriously threatened by waterlogging due to the uneven spatiotemporal distribution of rainfall events [28]. From 2009 to 2015, there were 739 flooding hotspots and 1908 urban flooding events in Guangzhou [29]. In addition, Zhao et al [30] analyzed the spatial and temporal changes of precipitation extremes and found that daily intensity shows a significant positive trend in Guangzhou.…”

Section: Study Sitementioning

confidence: 99%

Assessing Hydrological Effects of Bioretention Cells for Urban Stormwater Runoff in Response to Climatic Changes

Wang

Zhang

Lou

et al. 2019

Water

View full text Add to dashboard Cite

An investigation into the effectiveness of bioretention cells (BCs) under potential climatic changes was conducted using representative concentration pathways. A case study of Guangzhou showed changes in peak runoff in climate change scenarios, with obvious growth in RCP8.5 and slight growth in RCP2.6. The performance of BCs on multiple parameters, including reduction of runoff volume, peak runoff, and first flush, were examined in different design storms using a hydrology model (SWMM). The effectiveness of BCs varied non-linearly with scale. Their performance fell by varying amounts in the various scenarios. BCs could provide sufficient effects in response to short-return-period and short-duration storms, but the performance of BCs decreased with heavy storms, especially considering climate change. Hence, BCs cannot replace grey infrastructure but should be integrated with them. The method developed in this study could be useful in the planning and design of low impact development in view of future climate changes.

show abstract

Section: Study Sitementioning

confidence: 99%

Assessing Hydrological Effects of Bioretention Cells for Urban Stormwater Runoff in Response to Climatic Changes

Wang

Zhang

Lou

et al. 2019

Water

View full text Add to dashboard Cite

show abstract

“…The removal of vegetation and soil, the grading of the road surfaces, and the establishment of drainage networks give rise to increasing rainfall and snowmelt on river runoff. The common consequence of urban development is an increase in the flood peak discharge and flood frequency [4][5][6][7]. In general, the annual maximum discharge of rivers will increase with an increase in urban development, although this growth will sometimes be covered by large changes during storm years, which are well marked in the annual maximum discharge of some large cities in China after 2000 [8].…”

Section: Introductionmentioning

confidence: 99%

A New Integrated Scheme for Urban Road Traffic Flood Control Using Liquid Air Spray/Vaporization Technology

Zhang

Tang

et al. 2020

Sustainability

View full text Add to dashboard Cite

With the rapid progress of urbanization, cities’ demands for traffic flood control are steadily on the increase, and people are gradually paying more attention to traffic safety and environmental issues. Considering the considerable convenience and service ability of liquid air and corresponding products, people have begun to switch to using liquid air as an emergency coolant. However, this air’s cryogenic operation and vigorous vaporization expansion restricts its widespread application. Our study explores innovative applications based on liquid air spray/evaporation icing and natural melting, which can be applied to urban flood protection. This study also includes a brief introduction to the nature of liquid air and road icing, a conceptual design based on liquid air flash evaporation (for urban flood protection), and the modeling and solving of natural road ice melting. This paper introduces many innovative key technologies, which include the rapid solidification of floods to form emergency ice dams or diversion channels and the application of liquid air spray to form icy roads for the temporary passage of small cars or pickup trucks. Additionally, the economic estimations are performed by using downtown traffic flood control in Wuhan as an example to showcase our innovative scheme for applying liquid air spray/vaporization for urban traffic flooding control, which is practical, pollution free, and cost effective. Our innovative scheme will be promising for flood control in modern cities.

show abstract

“…Presently, many researches established models by using remote sensing and geographic information system technology to dynamically simulate the urban flooding process (Bernardini et al, ; Guidolin et al, ; Meesuk, Vojinovic, Mynett, & Abdullah, ; Smith, Liang, & Quinn, ), to analyse the mechanism of urban waterlogging (S. Du, Shi, Van Rompaey, & Wen, ; L. Yao, Wei, & Chen, ), to evaluate the characteristics of the risk of waterlogging (Chang & Huang, ; H. Huang et al, ), and to design the urban drainage system (Duan, Li, & Yan, ; Smith et al, ). These models included hydrologic models and digital surface and terrain models.…”

Section: Introductionmentioning

confidence: 99%

“…waterlogging (Chang & Huang, 2015;H. Huang et al, 2017), and to design the urban drainage system (Duan, Li, & Yan, 2016;Smith et al, 2015).…”

mentioning

confidence: 99%

Assessing urban flood and drought risks under climate change, China

Chen

Yuan

et al. 2019

Hydrological Processes

View full text Add to dashboard Cite

Risk analysis of urban flood and drought can provide useful guidance for urban rainwater management. Based on an analysis of urban climate characteristics in 2,264 Chinese cities from 1958 to 2017, this study evaluated urban flood and drought risks. The results demonstrated that the annual average values of precipitation, aridity index, frequency and intensity of extreme precipitation and extreme drought events differed significantly in these cities. The values of the above six climatic indicators in the cities ranged from 9.29–2639.30 mm, 0.47–54.73, 1.08–8.79 time, 7.82–107.25 mm, 0.76–2.99 time, and 10.30–131.19 days, respectively. The geographical patterns of urban precipitation, aridity index, intensity and frequency of extreme precipitation and drought events in China fit well to the Hu‐Huanyong Line that was created in 1940s to identify the pattern of population distribution. Extreme precipitation in most cities has upward trends, except for those around the Hu‐Huanyong Line. The extreme drought events had upward trends in the cities east of the Hu‐Huanyong Line, but there were downward trends in the cities west of the line. The risk assessment indicated that 3.80% cities were facing serious flood and 6.01% cities were facing serious drought risks, which are located in the coast of southern China and northwestern China, respectively, and other 90.19% cities were facing different types of drought and flood risks in terms of their intensity and frequency.

show abstract

The changing pattern of urban flooding in Guangzhou, China

Cited by 92 publications

References 38 publications

Assessing Hydrological Effects of Bioretention Cells for Urban Stormwater Runoff in Response to Climatic Changes

Assessing Hydrological Effects of Bioretention Cells for Urban Stormwater Runoff in Response to Climatic Changes

A New Integrated Scheme for Urban Road Traffic Flood Control Using Liquid Air Spray/Vaporization Technology

Assessing urban flood and drought risks under climate change, China

Contact Info

Product

Resources

About