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Article

Impacts of Urbanization on Variations of Extreme Precipitation over the Yangtze River Delta

1
School of Earth Sciences and Engineering, Hohai University, Nanjing 210098, China
2
Engineering Innovation Center for Urban Underground Space Exploration and Evaluation, Ministry of Natural Resources of the People’s Republic of China, Nanjing 210014, China
3
Geological Survey and Research Institute of Jiangsu Province, Nanjing 210014, China
*
Author to whom correspondence should be addressed.
Water 2021, 13(2), 150; https://doi.org/10.3390/w13020150
Received: 10 December 2020 / Revised: 31 December 2020 / Accepted: 7 January 2021 / Published: 10 January 2021
(This article belongs to the Section Hydrology and Hydrogeology)
The urbanization process is the hallmark of the population’s economic activities and land-use types, including population-, economic-, and landscape-urbanization. The question of how to classify the stations into urbanized and suburbanized stations is important for detecting the contribution rates of urbanization to precipitation extremes. This study used the fuzzy c-means clustering method to classify different urbanized level stations by population, economy, and impervious surface in the Suzhou-Wuxi-Changzhou urban agglomeration. Based on the change trends of six extreme precipitation indices, the contribution rates of urbanization to the precipitation extremes were estimated. The results show that the increasing indices were the intensity indices, while the decreasing indices were the duration indices during 1980–2015. Moreover, high urbanization tended to have a higher contribution to the most extreme precipitation indices, especially the intensity indices, than urbanization in the medium-size cities, indicating the urbanization leads to the phenomenon of extreme precipitation enhancement. The results of the three kinds of classification methods were different, especially the classification by the impervious area. This paper investigated the spatiotemporal changes in precipitation extremes and the contribution of urbanization to extreme precipitation, which will provide support for the development of urban agglomeration in the future. View Full-Text
Keywords: contribution rate; extreme precipitation; urbanization impacts; clustering method; Yangtze River Delta contribution rate; extreme precipitation; urbanization impacts; clustering method; Yangtze River Delta
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MDPI and ACS Style

Kang, C.; Luo, Z.; Zong, W.; Hua, J. Impacts of Urbanization on Variations of Extreme Precipitation over the Yangtze River Delta. Water 2021, 13, 150. https://doi.org/10.3390/w13020150

AMA Style

Kang C, Luo Z, Zong W, Hua J. Impacts of Urbanization on Variations of Extreme Precipitation over the Yangtze River Delta. Water. 2021; 13(2):150. https://doi.org/10.3390/w13020150

Chicago/Turabian Style

Kang, Congxuan; Luo, Zujiang; Zong, Wen; Hua, Jian. 2021. "Impacts of Urbanization on Variations of Extreme Precipitation over the Yangtze River Delta" Water 13, no. 2: 150. https://doi.org/10.3390/w13020150

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