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Multi-Dimensional Risks and Eco-Environmental Responses of Check Dam Systems: Evidence from a Typical Watershed in China’s Loess Plateau

Author

Listed:
  • Yujie Yang

    (State Key Laboratory of Water Engineering Ecology and Environment in Arid Area, Xi’an University of Technology, Xi’an 710048, China)

  • Shengdong Cheng

    (State Key Laboratory of Water Engineering Ecology and Environment in Arid Area, Xi’an University of Technology, Xi’an 710048, China)

  • Penglei Hang

    (State Key Laboratory of Water Engineering Ecology and Environment in Arid Area, Xi’an University of Technology, Xi’an 710048, China)

  • Zhanbin Li

    (State Key Laboratory of Water Engineering Ecology and Environment in Arid Area, Xi’an University of Technology, Xi’an 710048, China)

  • Heng Wu

    (State Key Laboratory of Water Engineering Ecology and Environment in Arid Area, Xi’an University of Technology, Xi’an 710048, China)

  • Ganggang Ke

    (State Key Laboratory of Water Engineering Ecology and Environment in Arid Area, Xi’an University of Technology, Xi’an 710048, China)

  • Xingyue Guo

    (State Key Laboratory of Water Engineering Ecology and Environment in Arid Area, Xi’an University of Technology, Xi’an 710048, China)

  • Yunzhe Zhen

    (State Key Laboratory of Water Engineering Ecology and Environment in Arid Area, Xi’an University of Technology, Xi’an 710048, China)

Abstract

Deteriorating check dams pose significant threats to human safety and property, while impeding eco-environmental restoration in soil–water conservation systems in vulnerable watersheds like the Jiuyuangou Basin on China’s Loess Plateau. This study aimed to develop a comprehensive risk assessment framework for the check dam system in the Jiuyuangou Basin, China, to mitigate its threats to safety and eco-environmental restoration. A multi-index and multilevel risk evaluation system was established for check dam systems in the Jiuyuangou Basin, utilizing data gathering, hydrological statistics, numerical computation, and various methodologies. The index weights were determined via the fuzzy analytic hierarchy process with an integrated modeling framework for key parameters. Finally, the risk level of the check dam system in the Jiuyuangou Basin was assessed based on the comprehensive score. The results show that (1) nearly half of the check dams are at mild risk, approximately 25% are at moderate risk, and a few are basically safe. (2) Among various types of risk, the distribution of engineering risk is relatively uniform, environmental risk is generally high, loss risk is relatively concentrated, and management risk is particularly prominent. This research provides a scientific foundation for optimizing check dam governance, enhancing sediment control, and strengthening ecological service functions in vulnerable watersheds.

Suggested Citation

  • Yujie Yang & Shengdong Cheng & Penglei Hang & Zhanbin Li & Heng Wu & Ganggang Ke & Xingyue Guo & Yunzhe Zhen, 2025. "Multi-Dimensional Risks and Eco-Environmental Responses of Check Dam Systems: Evidence from a Typical Watershed in China’s Loess Plateau," Sustainability, MDPI, vol. 17(21), pages 1-24, October.
    • Handle: RePEc:gam:jsusta:v:17:y:2025:i:21:p:9477-:d:1779131
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    References listed on IDEAS

    as
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