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Grid-quantification study on the effect of rapid urbanization on hydrological processes
  • +4
  • Fan Yang,
  • Chenchen Zhao,
  • Jingyi Wang,
  • Chengshuai Liu,
  • Yue Sun,
  • shan-e-hyder Soomro,
  • caihong hu
Fan Yang
Zhengzhou University

Corresponding Author:[email protected]

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Chenchen Zhao
Zhengzhou University
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Jingyi Wang
Zhengzhou University
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Chengshuai Liu
Zhengzhou University
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Yue Sun
Zhengzhou University
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shan-e-hyder Soomro
Zhengzhou University
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caihong hu
College of Water Conservancy & Environmental
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Abstract

Hydrological processes such as evaporation, infiltration, and runoff are affected not only by natural climate change but also by land cover and soil conditions. The impact of urbanization on the key elements of the hydrological process is worth studying in context of rapid urbanization. This paper combines the soil-land use index grid and the GSSHA model to quantitatively study the impact of land use on urban hydrological processes under the background of the changing urbanization stage. The results show that with the increase in land development and utilization activities, the hydrological process will transform. When grassland and woodland are converted to construction land, the changes in runoff, infiltration, and evaporation are the largest. The runoff depth increased by 0.94×10-1~2.42×10-1mm/km², infiltration depth decreased by 0.80×10-1~ 2.18×10-1mm/km², evaporation decreased by 0.14×10-1~ 0.28×10-1mm/km². In the transition from forest land to grassland, from cultivated land to forest land, and from cultivated land to grassland, the increase of infiltration contributed over 80% to the decrease of runoff process. This provides a scientific basis for future urban planning and sponge city construction.
10 Jan 2022Submitted to Hydrological Processes
11 Jan 2022Submission Checks Completed
11 Jan 2022Assigned to Editor
19 Jan 2022Reviewer(s) Assigned
18 Feb 2022Review(s) Completed, Editorial Evaluation Pending