Research Progress of Urban Floods under Climate Change and Urbanization: A Scientometric Analysis

Abstract

Urban floods research has been attracting extensive attention with the increasing threat of flood risk and environmental hazards due to global climate change and urbanization. However, there is rarely a comprehensive review of this field and it remains unclear how the research topics on urban floods have evolved. In this study, we analyzed the development of urban floods research and explored the hotspots and frontiers of this field by scientific knowledge mapping. In total, 3314 published articles from 2006 to 2021 were analyzed. The results suggest that the number of published articles in the field of urban floods generally has an upward trend year by year, and the research focus has shifted from exploring hydrological processes to adopting advanced management measures to solve urban flood problems. Moreover, urban stormwater management and low impact development in the context of climate change and urbanization have gradually become research hotspots. Future research directions based on the status and trends of the urban floods field were also discussed. This research can not only inspire other researchers and policymakers, but also demonstrates the effectiveness of scientific knowledge mapping analysis by the use of the software CiteSpace and VOSviewer.

Resilient City: Characterization, Challenges and Outlooks

“…Scientific knowledge graphs, a type of visual literature analysis gradually developed for big data visualization, are one of the critical methods for studying the development dynamics of various disciplines [20,21]. Combining multidisciplinary theories and cooccurrence analysis methods and using a modern theory of multidisciplinary integration contribute to helping researchers effectively sort through existing research trajectories [22][23][24].…”

Method to Identify the Likelihood of Death in Residential Buildings during Coastal Flooding

“…The assessment of fatalities due to floods is a relatively new research field [17,18], with research shifting from the hydrological process to its management [19]. Several major studies have been conducted in the UK, Netherlands, and Canada [20,21] because of greater data availability pertaining to the conditions under which flood-related fatalities occurred.…”

“…where i = {B, R} refers to the building vulnerability class (black or red class), j = {−15, 15-60, +60} is the age of the population, F i,j D is the mortality fraction according to the building vulnerability class and the age of the inhabitants, N i,j is the potential number of deaths for each situation, and N i,j EXP is the corresponding exposed population. Detailed calculations of the mortality fraction for each situation are given in Appendix B, and the results are summarized in Table 4 and Appendix C (lines [15][16][17][18][19][20]. It needs to be said that black buildings could lead to death for all, whereas red class buildings are relatively safe except for the young and the elderly, who can have difficulties moving inside a flooded house.…”

Evaluating the effect of building patterns on urban flooding based on a boosted regression tree: a case study of Beijing, China

“…Urban flooding has attracted more and more attention for its frequent occurrence and severe damage (Kim et al, 2022;Lin et al, 2022;Ma et al, 2022;Chen et al, 2021;Sun et al, 2021;Yang et al, 2021;Paprotny et al, 2018). Previous related studies have tended to reveal urban hydrological mechanism by adopting field investigations, laboratory modeling and urban hydrological modeling (Ma et al, 2022;Shrestha et al, 2022;Li et al, 2022;Muthusamy et al, 2021).…”