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| DOI：10.13522/j.cnki.ggps.2025213 |
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| Evaluating economic benefits of water resources in the Ningxia Section of the Yellow River using the single-region and input-output model |
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ZHOU Bo, SHEN Xiaojing, CHEN You, ZHANG Jing, JI Jinyu, WU Run, SHANG Fenjie
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School of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, China
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| Abstract: |
| 【Objective】The arid and semi-arid regions in Northwestern China face acute water resource scarcity, which is further exacerbated by increased agricultural water consumption and the need to balance economic development and national water governance requirements. The purpose of this paper is to evaluate water resource use efficiency in Ningxia to improve implementation of the national strategy of ‘defining city, land, population, and industry based on water resources’. 【Method】Water consumption used by different sectors was selected as the evaluation indicators. Input-output tables linking water resources to macroeconomic activities were constructed for Ningxia section of the Yellow River in 2007, 2012 and 2017. A provincial production share diagonal matrix was used to optimize the traditional single-region water efficiency evaluation method, which could accurately assess water use efficiency, water-related economic benefits, and virtual water transfers in different sectors. Water use efficiency in different sectors in the three years was compared to identify their temporal changes. 【Result】Notable differences in water use coefficients existed between different sectors. ① Agriculture had the highest direct and total water use coefficients. ② Construction, petroleum processing and service were the three sectors that had the highest direct and total output coefficients. ③ Agriculture was the net exporter of virtual water and the key carrier of hidden water transfers, while the food and tobacco processing, textile, construction and service sectors were the main net importers of virtual water. 【Conclusion】Introducing a provincial production share diagonal matrix can effectively reduce the overestimated total water use and output coefficients by the single-region input-output model. Our findings provide a guideline for improving industry-specific water-saving strategies in Ningxia and other regions in Northwestern China. |
| Key words: input-output analysis; diagonal matrix of intra-regional production shares; economic efficiency of water consumption; virtual water |
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