Impacts of Urbanization on Extreme Regional Precipitation Events
Urbanization significantly impacts regional precipitation. In this study, using the city of Xi’an in China as a study area, we analyze the variation in land use and the characteristics of the variation in extreme precipitation events and discuss the response of urbanization to extreme precipitation....
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Discrete Dynamics in Nature and Society |
| Online Access: | http://dx.doi.org/10.1155/2021/2210184 |
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| author | Wei Wu Lei Ren Yingjian Wei Mengjing Guo |
| author_facet | Wei Wu Lei Ren Yingjian Wei Mengjing Guo |
| author_sort | Wei Wu |
| collection | DOAJ |
| description | Urbanization significantly impacts regional precipitation. In this study, using the city of Xi’an in China as a study area, we analyze the variation in land use and the characteristics of the variation in extreme precipitation events and discuss the response of urbanization to extreme precipitation. The main conclusions drawn are as follows. (1) The construction land area of the study area rapidly expanded in size from 80.76 km2 in 1984 to 400.3 km2 in 2018. The transfer of land use mainly occurred as the transfer from farmland to other types of land use. The urban land use intensity continues to increase. (2) The intensities and different frequency indices of extreme precipitations both show an increasing trend. In addition, the former exhibits periodic alternation with a dominant frequency of 21 years during the flood season, and both the fluctuation amplitude and maximum value of the periodic variation increase with time. (3) The urbanization in the study area has a significant impact on Rx1h and Rx2h precipitations, but little impact on the intensity of long-duration precipitation. Hence, urbanization significantly increases the intensity of extreme precipitation. After the 2000s, the urban building area, rainfall frequency, and rainfall intensity growth trends are highly consistent. |
| format | Article |
| id | doaj-art-323036a81ced4d26a1bc6a5a07efa962 |
| institution | Kabale University |
| issn | 1026-0226 1607-887X |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Discrete Dynamics in Nature and Society |
| spelling | doaj-art-323036a81ced4d26a1bc6a5a07efa9622025-02-03T01:24:42ZengWileyDiscrete Dynamics in Nature and Society1026-02261607-887X2021-01-01202110.1155/2021/22101842210184Impacts of Urbanization on Extreme Regional Precipitation EventsWei Wu0Lei Ren1Yingjian Wei2Mengjing Guo3State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi’an University of Technology, Xi’an 710048, ChinaState Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi’an University of Technology, Xi’an 710048, ChinaPower China Kunming Engineering Corporation Limited, Kunming 650051, ChinaState Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi’an University of Technology, Xi’an 710048, ChinaUrbanization significantly impacts regional precipitation. In this study, using the city of Xi’an in China as a study area, we analyze the variation in land use and the characteristics of the variation in extreme precipitation events and discuss the response of urbanization to extreme precipitation. The main conclusions drawn are as follows. (1) The construction land area of the study area rapidly expanded in size from 80.76 km2 in 1984 to 400.3 km2 in 2018. The transfer of land use mainly occurred as the transfer from farmland to other types of land use. The urban land use intensity continues to increase. (2) The intensities and different frequency indices of extreme precipitations both show an increasing trend. In addition, the former exhibits periodic alternation with a dominant frequency of 21 years during the flood season, and both the fluctuation amplitude and maximum value of the periodic variation increase with time. (3) The urbanization in the study area has a significant impact on Rx1h and Rx2h precipitations, but little impact on the intensity of long-duration precipitation. Hence, urbanization significantly increases the intensity of extreme precipitation. After the 2000s, the urban building area, rainfall frequency, and rainfall intensity growth trends are highly consistent.http://dx.doi.org/10.1155/2021/2210184 |
| spellingShingle | Wei Wu Lei Ren Yingjian Wei Mengjing Guo Impacts of Urbanization on Extreme Regional Precipitation Events Discrete Dynamics in Nature and Society |
| title | Impacts of Urbanization on Extreme Regional Precipitation Events |
| title_full | Impacts of Urbanization on Extreme Regional Precipitation Events |
| title_fullStr | Impacts of Urbanization on Extreme Regional Precipitation Events |
| title_full_unstemmed | Impacts of Urbanization on Extreme Regional Precipitation Events |
| title_short | Impacts of Urbanization on Extreme Regional Precipitation Events |
| title_sort | impacts of urbanization on extreme regional precipitation events |
| url | http://dx.doi.org/10.1155/2021/2210184 |
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