Impact of land use changes on waterlogging disasters in the small urban watershed of Hangzhou
Study region: The Gongshu District watershed of the Hangzhou section of the Beijing–Hangzhou Grand Canal. Study Focus: Performing parameter calibration of the grid-based surface and subsurface hydrologic analysis (GSSHA) model and using the GSSHA model to simulate the spatial distribution of waterlo...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-02-01
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| Series: | Journal of Hydrology: Regional Studies |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581825000023 |
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| author | Rikun Wen Liu Yang Hexian Jin Hao Tao Chingaipe N’tani |
| author_facet | Rikun Wen Liu Yang Hexian Jin Hao Tao Chingaipe N’tani |
| author_sort | Rikun Wen |
| collection | DOAJ |
| description | Study region: The Gongshu District watershed of the Hangzhou section of the Beijing–Hangzhou Grand Canal. Study Focus: Performing parameter calibration of the grid-based surface and subsurface hydrologic analysis (GSSHA) model and using the GSSHA model to simulate the spatial distribution of waterlogging disasters as well as the changes in water and infiltration depth under different rainfall intensities and Land Use/Land Cover (LULC) change in the watershed. By utilizing overlay and statistical analysis methods, this study quantitatively analyzes the impact of LULC on the urban waterlogging disaster risk. New hydrological insights for the region: 1) Using the GSSHA model to simulate waterlogging disasters at the small urban watershed scale was effective. 2) The waterlogging points in a small watershed were mainly distributed in areas with high building density, low forest area, low elevation, and low surface permeability. The most severely flooded points were often very close to the river system. 3) LULC has a significant impact on the spatial distribution of waterlogging points in small urban watersheds: When the forest area increases, the bare land area decreases, the area of land converted from construction land to forest land increases, the depth of waterlogging decreases, and the infiltration depth increases. 4) The responses of waterlogging and infiltration depth to forest cover exhibit spatial variations under the same rainfall intensity. Greater rainfall intensities led to a greater reduction in waterlogging depth between 2020 and 2021.The findings of this study offer valuable insights for land use planning and urban stormwater management in small urban watersheds. |
| format | Article |
| id | doaj-art-9a77f7234b064c1c87aa7cc256749524 |
| institution | Kabale University |
| issn | 2214-5818 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj-art-9a77f7234b064c1c87aa7cc2567495242025-01-22T05:42:21ZengElsevierJournal of Hydrology: Regional Studies2214-58182025-02-0157102178Impact of land use changes on waterlogging disasters in the small urban watershed of HangzhouRikun Wen0Liu Yang1Hexian Jin2Hao Tao3Chingaipe N’tani4School of Landscape Architecture, Zhejiang Agriculture and Forest University, Hangzhou, Zhejiang Province, PR China; Zhejiang Province Key Think Tank: Institute of Ecological Civilization, Zhejiang Agriculture and Forest University, Hangzhou, Zhejiang Province, PR ChinaSchool of Landscape Architecture, Zhejiang Agriculture and Forest University, Hangzhou, Zhejiang Province, PR ChinaSchool of Landscape Architecture, Zhejiang Agriculture and Forest University, Hangzhou, Zhejiang Province, PR China; Correspondence to: Department of Landscape Architecture, Zhejiang Agriculture and Forest University, Hangzhou, Zhejiang Province, PR China.School of Landscape Architecture, Zhejiang Agriculture and Forest University, Hangzhou, Zhejiang Province, PR ChinaSchool of Landscape Architecture, Zhejiang Agriculture and Forest University, Hangzhou, Zhejiang Province, PR ChinaStudy region: The Gongshu District watershed of the Hangzhou section of the Beijing–Hangzhou Grand Canal. Study Focus: Performing parameter calibration of the grid-based surface and subsurface hydrologic analysis (GSSHA) model and using the GSSHA model to simulate the spatial distribution of waterlogging disasters as well as the changes in water and infiltration depth under different rainfall intensities and Land Use/Land Cover (LULC) change in the watershed. By utilizing overlay and statistical analysis methods, this study quantitatively analyzes the impact of LULC on the urban waterlogging disaster risk. New hydrological insights for the region: 1) Using the GSSHA model to simulate waterlogging disasters at the small urban watershed scale was effective. 2) The waterlogging points in a small watershed were mainly distributed in areas with high building density, low forest area, low elevation, and low surface permeability. The most severely flooded points were often very close to the river system. 3) LULC has a significant impact on the spatial distribution of waterlogging points in small urban watersheds: When the forest area increases, the bare land area decreases, the area of land converted from construction land to forest land increases, the depth of waterlogging decreases, and the infiltration depth increases. 4) The responses of waterlogging and infiltration depth to forest cover exhibit spatial variations under the same rainfall intensity. Greater rainfall intensities led to a greater reduction in waterlogging depth between 2020 and 2021.The findings of this study offer valuable insights for land use planning and urban stormwater management in small urban watersheds.http://www.sciencedirect.com/science/article/pii/S2214581825000023Urban waterloggingGSSHALULCLand use transfer matrixSmall urban watersheds |
| spellingShingle | Rikun Wen Liu Yang Hexian Jin Hao Tao Chingaipe N’tani Impact of land use changes on waterlogging disasters in the small urban watershed of Hangzhou Journal of Hydrology: Regional Studies Urban waterlogging GSSHA LULC Land use transfer matrix Small urban watersheds |
| title | Impact of land use changes on waterlogging disasters in the small urban watershed of Hangzhou |
| title_full | Impact of land use changes on waterlogging disasters in the small urban watershed of Hangzhou |
| title_fullStr | Impact of land use changes on waterlogging disasters in the small urban watershed of Hangzhou |
| title_full_unstemmed | Impact of land use changes on waterlogging disasters in the small urban watershed of Hangzhou |
| title_short | Impact of land use changes on waterlogging disasters in the small urban watershed of Hangzhou |
| title_sort | impact of land use changes on waterlogging disasters in the small urban watershed of hangzhou |
| topic | Urban waterlogging GSSHA LULC Land use transfer matrix Small urban watersheds |
| url | http://www.sciencedirect.com/science/article/pii/S2214581825000023 |
| work_keys_str_mv | AT rikunwen impactoflandusechangesonwaterloggingdisastersinthesmallurbanwatershedofhangzhou AT liuyang impactoflandusechangesonwaterloggingdisastersinthesmallurbanwatershedofhangzhou AT hexianjin impactoflandusechangesonwaterloggingdisastersinthesmallurbanwatershedofhangzhou AT haotao impactoflandusechangesonwaterloggingdisastersinthesmallurbanwatershedofhangzhou AT chingaipentani impactoflandusechangesonwaterloggingdisastersinthesmallurbanwatershedofhangzhou |