Analyses of water footprint of Beijing in an interregional input–output framework
Analyses of water footprint of Beijing in an interregional input–output framework
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DOI：
10.1016/j.ecolecon.2011.08.011
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发表时间：
2011-10
影响因子：
7
通讯作者：
Zhuoying Zhang;Hong Yang;Minjun Shi
中科院分区：
文献类型：
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作者：
Zhuoying Zhang;Hong Yang;Minjun Shi
由于经济的快速发展和人口的不断增长，北京市面临着严峻的水资源压力。本研究在区域间投入产出框架下定量评价了北京市的水足迹，重点关注蓝色水资源及其利用。采用分区划分的方法，分析了北京市水资源与其他省份的相互联系。结果表明，北京市水足迹总量为4498.4106m3/a，其中51%来自通过虚拟水输入获得的外部水足迹。农业的水足迹最高，为1524.5106立方米/年，其中56%来自外部来源。河北省是北京市的主要虚拟水供应地，北京市从河北省获得的虚拟水为373.3106m3/a，其中40%来自农业。研究结果表明，区域间贸易协调，尤其是用水强度高的主要行业的贸易协调，对提高区域和国家水资源利用效率具有重要意义。
Beijing is under severe water resource pressure due to the rapid economic development and growing population. This study quantitatively evaluates the water footprint of Beijing in an interregional input–output framework with a focus on blue water resources and uses. The inter-connections of water resources between Beijing and other provinces are analyzed with a sectoral specification. The results show that the total water footprint of Beijing is 4498.4 106m3/year, of which 51% is from the external water footprint acquired through virtual water import. Agriculture has the highest water footprint of 1524.5 106m3/year with 56% coming from external sources. The main virtual water provider for Beijing is Hebei, another water scarce region, from which Beijing receives virtual water of 373.3 106m3/year with 40% from agriculture. The results of this study suggest that the interregional trade coordination, especially for the main sectors with high water use intensity, is important for enhancing the efficiency of regional and national water resource utilization.