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Remote Sensing-Based Assessment of Eco-Environmental Quality Dynamics and Driving Forces in the Anhui Section of the Yangtze-to-Huaihe Water Diversion Project (2015–2024)

Author

Listed:
  • Xiaoming Qi

    (College of Civil and Hydraulic Engineering, Bengbu University, Bengbu 233000, China
    Anhui Rural Ecological Environment Protection and Restoration Research Center, Bengbu University, Bengbu 233030, China)

  • Qian Li

    (College of Civil and Hydraulic Engineering, Bengbu University, Bengbu 233000, China)

  • Qiang Han

    (College of Civil and Hydraulic Engineering, Bengbu University, Bengbu 233000, China)

  • Bowen Li

    (College of Civil and Hydraulic Engineering, Bengbu University, Bengbu 233000, China)

  • Le Liu

    (Anhui Provincial Institute of Ecology and Environmental Sciences, Hefei 230000, China)

  • Zhikong Shi

    (Anhui Provincial Institute of Ecology and Environmental Sciences, Hefei 230000, China)

  • Yuanchao Ou

    (College of Civil and Hydraulic Engineering, Bengbu University, Bengbu 233000, China)

  • Dejian Wang

    (College of Civil and Hydraulic Engineering, Bengbu University, Bengbu 233000, China)

Abstract

The water source protection areas of the Yangtze-to-Huaihe Water Diversion Project (YHWDP) in Anhui Province serve as crucial ecological barriers to water quality protection. Quantifying their eco-environmental quality (EEQ) dynamics and driving mechanisms is critical for sustainable management. This paper calculated the Remote Sensing Ecological Index (RSEI) for the study area using Landsat satellite data (2015–2024). Temporal and spatial variation characteristics were analyzed using the Theil–Sen estimator, Mann–Kendall test, and coefficient of variation. Future trends were predicted using the Hurst exponent. Finally, the Geodetector model was applied to assess the impact of driving factors. EEQ exhibited a declining trend ( p < 0.05), with significant intra-regional heterogeneity. Mean RSEI values ranked as follows: (1) Yangtze River–Huaihe River Connection < Yangtze River Water Northward Conveyance < Yangtze River–Chaohu Lake Water Diversion. (2) From 2015 to 2024, eco-environmental quality improved significantly, showing a spatial pattern of “south > north, east > west.” (3) Overall EEQ changes were characterized by slight to moderate fluctuations. Stability rankings: Yangtze River–Huaihe River Connection > Yangtze River–Chaohu Lake Water Diversion > Yangtze River Water Northward Conveyance. (4) Geodetector analysis identified precipitation, impervious area, and vegetation coverage as the primary factors influencing EEQ in the YHWDP’s water source protection areas. This study reveals ecological changes in the YHWDP region and validates the effectiveness of the comprehensive evaluation method. The findings provide actionable insights for ecological protection in large-scale water diversion projects.

Suggested Citation

  • Xiaoming Qi & Qian Li & Qiang Han & Bowen Li & Le Liu & Zhikong Shi & Yuanchao Ou & Dejian Wang, 2025. "Remote Sensing-Based Assessment of Eco-Environmental Quality Dynamics and Driving Forces in the Anhui Section of the Yangtze-to-Huaihe Water Diversion Project (2015–2024)," Sustainability, MDPI, vol. 17(16), pages 1-19, August.
    • Handle: RePEc:gam:jsusta:v:17:y:2025:i:16:p:7329-:d:1723877
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    References listed on IDEAS

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    1. Ruth Mevianna Aurora & Katsunori Furuya, 2023. "Spatiotemporal Analysis of Urban Sprawl and Ecological Quality Study Case: Chiba Prefecture, Japan," Land, MDPI, vol. 12(11), pages 1-21, November.
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