Study on water-carbon relations among provinces in China under water constraints scenarios based on EEIO model

MA Mengyao; ZHANG Wenlong; WANG Xinzi; LI Yi; SUN Hongbo

doi:10.13205/j.hjgc.202508023

Volume 43 Issue 8

Aug. 2025

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2025 > 43(8): 244-254

MA Mengyao, ZHANG Wenlong, WANG Xinzi, LI Yi, SUN Hongbo. Study on water-carbon relations among provinces in China under water constraints scenarios based on EEIO model[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(8): 244-254. doi: 10.13205/j.hjgc.202508023

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MA Mengyao, ZHANG Wenlong, WANG Xinzi, LI Yi, SUN Hongbo. Study on water-carbon relations among provinces in China under water constraints scenarios based on EEIO model[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(8): 244-254. doi: 10.13205/j.hjgc.202508023

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Study on water-carbon relations among provinces in China under water constraints scenarios based on EEIO model

doi: 10.13205/j.hjgc.202508023

MA Mengyao^1,2,
ZHANG Wenlong^{1,2
,
,},
WANG Xinzi^1,2,
LI Yi^1,2,
SUN Hongbo³

1. Key Laboratory for Integrated Regulation and Resources Development of Shallow Lakes of Ministry of Education, Hohai University, Nanjing 210098, China;
2. College of Environment, Hohai University, Nanjing 210098, China;
3. Jiangsu Water Investment Co., Ltd., Nanjing 210000, China

Received Date: 2024-11-15
Accepted Date: 2025-01-05
Rev Recd Date: 2024-12-04

Abstract

Abstract

The judicious distribution of finite water resources across various provinces and sectors， in conjunction with the mitigation of carbon emissions， is crucial for the synergistic advancement of water conservation and carbon reduction. This research established three distinct scenarios： a baseline scenario， a water intensity constraint scenario， and a water stress constraint scenario. By improving and employing an environmentally extended input-output model， this study quantified the impact of diverse water resource constraints on regional carbon emissions， thereby elucidating the intricate water-carbon interaction dynamics among different provinces under the auspices of water resource limitations.The findings of this study revealed that water resource constraints exerted a significant influence on production-based carbon emissions， leading to a nationwide reduction ranging from 0.1% to 15.5%. This reduction was attributed to the constraints' impact on sectoral production activities. Notably， the northwest region demonstratesd a comparatively higher reduction in carbon emissions per unit of economic loss， underscoring its potential as a key area for carbon reduction initiatives.In the realm of consumption-side carbon emissions， water resource constraints predominantly affected inter-regional trade activities. This influence diminishesd the responsibility borne by each province for the carbon emissions generated in other provinces， resulting in a reduction of consumption-based carbon emissions by 1.5% to 3.1%. Moreover， water resource constraints had a profound effect on regional carbon transfers through inter-regional trade networks. These constraints could alter the net direction of inter-regional embodied carbon transfers， effectively shifting the burden of carbon emissions from water-deficient western and northern regions to the relatively water-endowed southern regions. This shift showed the potential to mitigate the carbon emission pressure in the western and northern regions. Drawing upon the findings of this study as a practical reference， the development and coordinated implementation of appropriate policies are critical components in achieving the objectives of water conservation and carbon reduction. It is essential to first identify key and potential regions， and subsequently formulate differentiated regional policies for water conservation and carbon reduction based on local conditions. This approach will not only promote the synergy between water conservation and carbon reduction but also facilitate economic development.
- water constraint,
- carbon reduction,
- water-carbon relations,
- input-output,
- scenario analysis

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References(47)

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