Impact of Urbanization on Regional Rainfall-Runoff Processes: Case Study in Jinan City, China
Rapid urbanization has altered the regional hydrological processes, posing a great challenge to the sustainable development of cities. The TVGM-USWM model, a new urban hydrological model considering the nonlinear rainfall-runoff relationship and the flow routing in an urban drainage system, was deve...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-05-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/15/9/2383 |
| _version_ | 1827742622502879232 |
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| author | Yanjun Zhao Jun Xia Zongxue Xu Yunfeng Qiao Jianming Shen Chenlei Ye |
| author_facet | Yanjun Zhao Jun Xia Zongxue Xu Yunfeng Qiao Jianming Shen Chenlei Ye |
| author_sort | Yanjun Zhao |
| collection | DOAJ |
| description | Rapid urbanization has altered the regional hydrological processes, posing a great challenge to the sustainable development of cities. The TVGM-USWM model, a new urban hydrological model considering the nonlinear rainfall-runoff relationship and the flow routing in an urban drainage system, was developed in this study. We employed this model in the Huangtaiqiao drainage basin of Jinan City, China, and examined the impact of land cover changes due to urbanization on rainfall-runoff processes. Two urbanization scenarios were set up in the TVGM-USWM model during the design rainfall events with different return periods. Results showed that (1) the TVGM-USWM model demonstrated good applicability in the study area, and the <i>R<sub>NS</sub></i> values of the flood events are all greater than 0.75 in both calibration and validation periods; (2) the proportion of impervious areas increased from 44.65% in 1990 to 71.00% in 2020, and urbanization played a leading role in the process of land cover change and manifested itself as a circular extensional expansion; and (3) urbanization showed a significant amplifying effect on the design flood processes, particularly for relatively big floods with small frequency, and the impact of urbanization on the time-to-peak of the design flood gradually decreased as the frequency of the design rainfall decreased. The results of this study can provide technical support for flood mitigation and the construction of a sponge city in Jinan City. |
| first_indexed | 2024-03-11T04:07:42Z |
| format | Article |
| id | doaj.art-2d4b9b5a79c24e9e99eea90d58e808e2 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-11T04:07:42Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-2d4b9b5a79c24e9e99eea90d58e808e22023-11-17T23:39:25ZengMDPI AGRemote Sensing2072-42922023-05-01159238310.3390/rs15092383Impact of Urbanization on Regional Rainfall-Runoff Processes: Case Study in Jinan City, ChinaYanjun Zhao0Jun Xia1Zongxue Xu2Yunfeng Qiao3Jianming Shen4Chenlei Ye5Key Laboratory of Water Cycle & Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, ChinaKey Laboratory of Water Cycle & Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, ChinaBeijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, College of Water Sciences, Beijing Normal University, Beijing 100875, ChinaUniversity of Chinese Academy of Sciences, Beijing 100049, ChinaKey Laboratory of Water Cycle & Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, ChinaBeijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, College of Water Sciences, Beijing Normal University, Beijing 100875, ChinaRapid urbanization has altered the regional hydrological processes, posing a great challenge to the sustainable development of cities. The TVGM-USWM model, a new urban hydrological model considering the nonlinear rainfall-runoff relationship and the flow routing in an urban drainage system, was developed in this study. We employed this model in the Huangtaiqiao drainage basin of Jinan City, China, and examined the impact of land cover changes due to urbanization on rainfall-runoff processes. Two urbanization scenarios were set up in the TVGM-USWM model during the design rainfall events with different return periods. Results showed that (1) the TVGM-USWM model demonstrated good applicability in the study area, and the <i>R<sub>NS</sub></i> values of the flood events are all greater than 0.75 in both calibration and validation periods; (2) the proportion of impervious areas increased from 44.65% in 1990 to 71.00% in 2020, and urbanization played a leading role in the process of land cover change and manifested itself as a circular extensional expansion; and (3) urbanization showed a significant amplifying effect on the design flood processes, particularly for relatively big floods with small frequency, and the impact of urbanization on the time-to-peak of the design flood gradually decreased as the frequency of the design rainfall decreased. The results of this study can provide technical support for flood mitigation and the construction of a sponge city in Jinan City.https://www.mdpi.com/2072-4292/15/9/2383urban floodsTVGM-USWM modelhydrological modelurbanizationland coversponge city |
| spellingShingle | Yanjun Zhao Jun Xia Zongxue Xu Yunfeng Qiao Jianming Shen Chenlei Ye Impact of Urbanization on Regional Rainfall-Runoff Processes: Case Study in Jinan City, China Remote Sensing urban floods TVGM-USWM model hydrological model urbanization land cover sponge city |
| title | Impact of Urbanization on Regional Rainfall-Runoff Processes: Case Study in Jinan City, China |
| title_full | Impact of Urbanization on Regional Rainfall-Runoff Processes: Case Study in Jinan City, China |
| title_fullStr | Impact of Urbanization on Regional Rainfall-Runoff Processes: Case Study in Jinan City, China |
| title_full_unstemmed | Impact of Urbanization on Regional Rainfall-Runoff Processes: Case Study in Jinan City, China |
| title_short | Impact of Urbanization on Regional Rainfall-Runoff Processes: Case Study in Jinan City, China |
| title_sort | impact of urbanization on regional rainfall runoff processes case study in jinan city china |
| topic | urban floods TVGM-USWM model hydrological model urbanization land cover sponge city |
| url | https://www.mdpi.com/2072-4292/15/9/2383 |
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