Zhang et al. (2025) Research on Optimal Water Resource Allocation in Inland River Basins Based on Spatiotemporal Evolution Characteristics of Blue and Green Water—Taking the Taolai River Basin of the Heihezi Water System as an Example

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Identification

• Journal: Water
• Year: 2025
• Date: 2025-10-11
• Authors: J. Zhang, Xinjian Fan, Xinghai Wang, Lirong Wang, Jiafang Wei, Yuhan Xiao
• DOI: 10.3390/w17202935

Research Groups

Not explicitly detailed in the provided text.

Short Summary

This study investigated the spatiotemporal distribution and supply-demand balance of blue and green water resources in the Taolai River Basin using the SWAT model, finding green water resources significantly more abundant and identifying substantial potential for blue water transfer to improve regional water allocation.

Objective

• To simulate the spatiotemporal distribution features of blue and green water resources, investigate their supply-demand balance, develop a water resource security assessment index system, and quantify the realizable potential of blue water resources in the Taolai River Basin.

Study Configuration

• Spatial Scale: Taolai River Basin, at the sub-basin scale.
• Temporal Scale: 2002 to 2021 (20 years).

Methodology and Data

• Models used: Distributed hydrological model SWAT (Soil and Water Assessment Tool).
• Data sources: Not explicitly detailed in the provided text.

Main Results

• Average annual green water resources in the Taolai River Basin were 1.95 times greater than blue water resources, making green water the most abundant regional water resource component.
• Both blue and green water resources exhibited considerable latitudinal zonality, showing a declining tendency from south to north with consistent distribution patterns.
• Blue water resources displayed high geographic variability, with safety indices greater than one, indicating supply-demand imbalances concentrated in the upper and intermediate irrigated regions and the desert zone, where safety levels were low.
• Green water resources had a safety score ranging from 0.7 to 1.0, suggesting high overall safety and negligible regional variability.
• The average annual theoretical transferable blue water resources were 4.06 × 10^8 m^3, revealing significant potential for enhancing regional water resource allocation.

Contributions

• Development of an assessment method for blue-green water resource security and transferable potential, providing a solid foundation for improving water resource allocation and sustainable management in inland river basins.
• Provides technical assistance for the construction of water network systems and establishing reasonable water resource distribution in inland river basins.

Funding

Not explicitly detailed in the provided text.

Citation

@article{Zhang2025Research,
  author = {Zhang, J. and Fan, Xinjian and Wang, Xinghai and Wang, Lirong and Wei, Jiafang and Xiao, Yuhan},
  title = {Research on Optimal Water Resource Allocation in Inland River Basins Based on Spatiotemporal Evolution Characteristics of Blue and Green Water—Taking the Taolai River Basin of the Heihezi Water System as an Example},
  journal = {Water},
  year = {2025},
  doi = {10.3390/w17202935},
  url = {https://doi.org/10.3390/w17202935}
}