Evaluating the water footprint of the energy supply of Liaoning Province, China: A regional input–output analysis approach
Evaluating the water footprint of the energy supply of Liaoning Province, China: A regional input–output analysis approach
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DOI：
10.1016/j.enpol.2014.12.029
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发表时间：
2015-03
期刊：
影响因子：
9
通讯作者：
T. Okadera;Y. Geng;Tsuyoshi Fujita;Huijuan Dong;Huijuan Dong;Zhu Liu;N. Yoshida;T. Kanazawa
中科院分区：
文献类型：
--
作者：
T. Okadera;Y. Geng;Tsuyoshi Fujita;Huijuan Dong;Huijuan Dong;Zhu Liu;N. Yoshida;T. Kanazawa
水和能源是区域经济的重要资源，两者密不可分。到2030年，全球水和能源需求将大幅增加，而气候变化将使水资源供应恶化。因此，尽管水资源限制日益严重，但必须确保可持续的能源供应。许多研究从生产角度分析了生产能源的水需求。然而，能源通常由内部和外部生产者提供。因此，也有必要从消费角度考虑生产能源所需的水的供应情况。本文对辽宁省能源供应的水足迹进行了评价。我们采用标准的自上而下的方法，使用输入输出框架。我们估计2002年辽宁省能源供应的水足迹为8.54亿m3，其中47%的水用于电力和供暖。我们的研究结果表明，能源供应可能依赖于邻近省份的水资源;外部生产者满足了80%的能源供应的水足迹，尽管只有35%的能源供应是进口的。如果辽宁省降低对外依存度，省内可利用水资源的提取率将从86%提高到91%。为了保障未来的区域能源安全，必须通过节水发电和在各部门之间分配水资源来有效管理水资源。
Water and energy are important resources for regional economies and are inextricably and reciprocally linked. Global water and energy demand will increase significantly by 2030 while climate change will worsen water availability. Thus, it is important to ensure a sustainable energy supply despite the increasing severity of water resource constraints. Numerous studies have analyzed water requirements to produce energy from production perspectives. However, energy is generally supplied by both internal and external producers. Thus, it is necessary to consider the availability of water to produce energy from consumption perspectives also. We evaluate the water footprint of the energy supply of Liaoning Province, China. We apply the standard top-down approach using an input–output framework. We estimate the water footprint of the energy supply of Liaoning Province at 854 million m3in 2002, with 47% of water used for electricity and heating. Our results reveal that energy supply could depend on water resources in neighboring provinces; external producers met 80% of the water footprint of energy supply, although only 35% of energy supply was imported. If Liaoning Province decreased its external dependency, withdrawal of available water resources within the province would increase from 86% to 91%. To guarantee future regional energy security, it is important to manage water resources effectively through water-efficient electricity generation and by allocating water resources among sectors.