Identifying the drivers of changes in embodied food-energy-water in the Bohai mega-urban region, China: A perspective of final demands

文献类型： 外文期刊

第一作者： Deng, Caiyun

作者： Deng, Caiyun;Wang, Hongrui;Zhao, Weijing;Deng, Caiyun;Wang, Hongrui;Zhao, Weijing;Hong, Siyang;Wang, Cheng

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关键词： Changes; Embodied food-energy-water consumption; Driving forces; Ecological multiscale input-output model; Structural decomposition analysis

期刊名称：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH （ 影响因子：5.19； 五年影响因子：5.053 ）

ISSN： 0944-1344

年卷期：

页码：

收录情况： SCI

摘要： Food-energy-water (FEW) systems in the Bohai mega-urban region (MUR) have experienced astonishing changes in recent decades; however, the dynamics of these changes are not fully understood. This study combined an ecological multiscale input-output model and a structural decomposition analysis (SDA) to explore the variation in embodied FEW consumption and its drivers. The results showed that, although almost all sectoral embodied FEW intensities decreased, embodied FEW demands increased by approximately 9.9x10(8) tons, 4.61x10(7) TJ and 1.1x10(11) m(3) over 10-year period. The embodied FEW flow diagrams show that local consumption and trade were strengthened. Urban household consumption, fixed capital formation and exports were the main components affecting the embodied FEW use increases. An SDA revealed that the consumption level effect (Delta c) was the dominant contributor that promoted the increase in the Bohai MUR's embodied FEW consumption. The scale effect (Delta p) also had a positive effect on the embodied FEW consumption increases. The technological effect (Delta e) was the primary contributor to offset the embodied FEW consumption increase. The economic efficiency effect (Delta L) and structural effect (Delta s(d)) also contributed to offsetting the total embodied FEW consumption increase. The effect of the change in domestic and foreign imports (Delta D and Delta F) impacted the increase in embodied FEW mainly through the change in the embodied FEW intensities and trade volumes. This study identified the changes in FEW systems and highlighted future coping strategies.

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