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Effect of Urbanization on the River Network Structure in Zhengzhou City, China

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  • Hongxiang Wang

    (School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450045, China)

  • Lintong Huang

    (School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450045, China)

  • Jianwen Hu

    (School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450045, China)

  • Huan Yang

    (School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450045, China)

  • Wenxian Guo

    (School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450045, China)

Abstract

Hydrological problems, such as flood disasters, can be caused by the influence of urbanization on river network structures in plain areas. Taking the main urban region of Zhengzhou city as the research area, based on six remote sensing images from 1992 to 2015, the modified normalized difference water index method and a land-use transfer matrix were used to reconstruct river network data to study the temporal and spatial changes in the river system. In addition, the analytic hierarchy process and the entropy weight method were used to construct pattern indexes of the river system to quantitatively evaluate the inner relationship between the urbanization process and the river network structure in the plain area. The results showed that the percentages of arable land, forest and grassland, water, and unused land in Zhengzhou that was transferred to construction land from 1992 to 2015 were 59.10%, 51.05%, 29.83%, and 58.76%, respectively. In the past 34 years, the morphological indices, structural indices, and connectivity indices of the river system experienced a trend of high to low, and then increased, with the structural indices being significantly correlated with construction land use ( p < 0.05). The regression equation R 2 between urbanization level and river length, water area, river network density, water surface rate, connection rate, and connectivity ranged from 0.677 to 0.966, which could well reflect the response relationship between urbanization and the river network. In addition, the outflow was greater than the inflow, which has destroyed the natural structure of the channel.

Suggested Citation

  • Hongxiang Wang & Lintong Huang & Jianwen Hu & Huan Yang & Wenxian Guo, 2022. "Effect of Urbanization on the River Network Structure in Zhengzhou City, China," IJERPH, MDPI, vol. 19(4), pages 1-15, February.
  • Handle: RePEc:gam:jijerp:v:19:y:2022:i:4:p:2464-:d:754338
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    References listed on IDEAS

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    1. Jinlong Gao & Yehua Dennis Wei & Wen Chen & Komali Yenneti, 2015. "Urban Land Expansion and Structural Change in the Yangtze River Delta, China," Sustainability, MDPI, vol. 7(8), pages 1-27, July.
    2. Neeson, Thomas M. & Wiley, Michael J. & Adlerstein, Sara A. & Riolo, Rick L., 2011. "River network structure shapes interannual feedbacks between adult sea lamprey migration and larval habitation," Ecological Modelling, Elsevier, vol. 222(17), pages 3181-3192.
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    Cited by:

    1. Yongfei Fu & Yuyu Liu & Shiguo Xu & Zhenghe Xu, 2022. "Assessment of a Multifunctional River Using Fuzzy Comprehensive Evaluation Model in Xiaoqing River, Eastern China," IJERPH, MDPI, vol. 19(19), pages 1-18, September.
    2. Jie Li & Lintong Huang & Kai Zhu, 2023. "Ecological Health Assessment of an Urban River: The Case Study of Zhengzhou City, China," Sustainability, MDPI, vol. 15(10), pages 1-14, May.
    3. Chang Liu & Yongge Hu & Assemgul Taukenova & Guohang Tian & Bo Mu, 2023. "Identification of Wetland Conservation Gaps in Rapidly Urbanizing Areas: A Case Study in Zhengzhou, China," Land, MDPI, vol. 12(1), pages 1-18, January.

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