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<p>This research presented the development of a three-dimensional footprint model for agricultural water (<i>EF</i><sub><i>3Dw</i></sub>) and calculated the ecological footprint of agricultural water (<i>EF</i><sub><i>w</i></sub>) in Chongqing from 2015 to 2021. It integrated the ecological carrying capacity of agricultural water (<i>EC</i><sub><i>w</i></sub>) and the three-dimensional ecological footprint of agricultural water per 10,000 GDP into a comprehensive evaluation system aimed at assessing sustainable utilization. By combining the sustainable utilization index with the ecological tension index, a thorough evaluation of Chongqing’s agricultural water sustainable utilization was conducted. The findings indicated that: The <i>EF</i><sub><i>3Dw</i></sub> in Chongqing exhibited an increasing trend, while <i>EC</i><sub><i>w</i></sub> declined, though <i>EC</i><sub><i>w</i></sub> remained consistently higher than <i>EF</i><sub><i>3Dw</i></sub>, resulting in an overall ecological surplus (<i>ED</i><sub><i>w</i></sub>). The highest <i>ED</i><sub><i>w</i></sub> was observed in the new area, while the Southeast Area demonstrated the lowest <i>EC</i><sub><i>w</i></sub>. Among the components of the sustainable utilization index, the resources condition system index significantly influenced the results, showing an upward trend. In contrast, the socio-economic system index declined gradually, and the ecological environment system index showed a more marked decrease, yet the composite evaluation index indicated a generally stable increase. These results suggested a steady improvement in the sustainable utilization of agricultural water in Chongqing. The sustainable utilization index revealed an inverted “U”-shaped development trend, stabilizing between 0.9 and 1.0, signifying that agricultural water was utilized sustainably. Conversely, the ecological tension index followed a positive “U”-shaped trend with values below 0.5, indicating that agricultural water remained in a “very safe” range. Overall, agricultural water use in Chongqing exhibited a robust and steadily improving trend toward sustainability. However, regional disparities and developmental imbalances persisted as challenges that require ongoing attention. The conclusions drawn from this research may provide a scientific foundation for managing agricultural water resources in Chongqing and other similar regions.</p>

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Research on the agricultural water ecological footprint and sustainable utilization in Chongqing municipality based on the three-dimensional ecological footprint model

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月9日

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  • Xiaochen Zhou,
  • Ping Lai,
  • Jiangang Zhang

摘要

This research presented the development of a three-dimensional footprint model for agricultural water (EF3Dw) and calculated the ecological footprint of agricultural water (EFw) in Chongqing from 2015 to 2021. It integrated the ecological carrying capacity of agricultural water (ECw) and the three-dimensional ecological footprint of agricultural water per 10,000 GDP into a comprehensive evaluation system aimed at assessing sustainable utilization. By combining the sustainable utilization index with the ecological tension index, a thorough evaluation of Chongqing’s agricultural water sustainable utilization was conducted. The findings indicated that: The EF3Dw in Chongqing exhibited an increasing trend, while ECw declined, though ECw remained consistently higher than EF3Dw, resulting in an overall ecological surplus (EDw). The highest EDw was observed in the new area, while the Southeast Area demonstrated the lowest ECw. Among the components of the sustainable utilization index, the resources condition system index significantly influenced the results, showing an upward trend. In contrast, the socio-economic system index declined gradually, and the ecological environment system index showed a more marked decrease, yet the composite evaluation index indicated a generally stable increase. These results suggested a steady improvement in the sustainable utilization of agricultural water in Chongqing. The sustainable utilization index revealed an inverted “U”-shaped development trend, stabilizing between 0.9 and 1.0, signifying that agricultural water was utilized sustainably. Conversely, the ecological tension index followed a positive “U”-shaped trend with values below 0.5, indicating that agricultural water remained in a “very safe” range. Overall, agricultural water use in Chongqing exhibited a robust and steadily improving trend toward sustainability. However, regional disparities and developmental imbalances persisted as challenges that require ongoing attention. The conclusions drawn from this research may provide a scientific foundation for managing agricultural water resources in Chongqing and other similar regions.