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首页> 外文期刊>Journal of Cleaner Production >Ecological network analysis of an energy metabolism system based on input-output tables: Model development and case study for Guangdong
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Ecological network analysis of an energy metabolism system based on input-output tables: Model development and case study for Guangdong

机译：基于投入产出表的能量代谢系统生态网络分析：广东省模型发展与案例研究

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Rapid urbanization results in energy shortage and unreasonable energy metabolism structure. The goal of this research is to take Guangdong, China as a special case study to illustrate the influence of energy classification differences on the energy metabolism system. To do so, we introduced the concept of "urban metabolism", and treated sectors and energy flows as nodes and paths in a network model. We used the input output analysis to compile the physical input output table through the embodied energy element intensity. Building on this, we used ecological network analysis to quantify the urban metabolic processes and energy metabolism levels within the urban system. In addition, the alternative indicators are first introduced to explore the best alternative energy in various sectors to avoid a short-term energy crisis. In this paper, different energy groups are considered on the energy metabolism system, including all energy, primary energy, secondary energy and six specific energy, which will fill the research gap about the influence of energy classification on urban energy metabolism. It is found that the energy metabolism of Guangdong is now in the state of sub-health. The energy metabolism hierarchy atlas shows that the pulling force is hardly affected by the energy classification but the driving force is very sensitive, which further illustrate that producers can choose different energy according to their production structure. Facing the shortage of energy supply, the secondary energy with the highest substitutability of all energy value is the better alternative energy for advanced manufacturing sector (containing twelve industries such as Manufacture of transportation equipment and Manufacture of metal products). More specifically, the nonrenewable properties of primary energy make it particularly important to find the corresponding alternative energy. Heat is the best alternative energy for crude oil, while electricity is irreplaceable. It is expected that the results will provide scientific support to guide the reform of urban energy metabolic system in an attempt to coordinate the energy development strategy, improve the energy consumption structure and maintain energy security and stability. (C) 2019 Published by Elsevier Ltd.
机译：快速的城市化导致能源短缺和不合理的能源代谢结构。本研究的目的是以中国广东省为例，说明能量分类差异对能量代谢系统的影响。为此，我们引入了“城市新陈代谢”的概念，并将扇区和能量流视为网络模型中的节点和路径。我们使用输入输出分析通过体现的能量元素强度来编译物理输入输出表。在此基础上，我们使用生态网络分析来量化城市新陈代谢过程和城市系统内的能量代谢水平。此外，首先引入替代指标以探索各个部门中最佳的替代能源，以避免短期能源危机。本文在能量代谢系统中考虑了不同的能量类别，包括所有能量，一次能量，二次能量和六种特定能量，这将填补关于能量分类对城市能量代谢影响的研究空白。发现广东的能量代谢目前处于亚健康状态。能量代谢层次图谱表明，拉力几乎不受能量分类的影响，但驱动力非常敏感，这进一步说明生产者可以根据生产结构选择不同的能量。面对能源供应短缺，所有能源价值中可替代性最高的二次能源是先进制造业（包括十二个行业，如运输设备制造业和金属制品制造​​业）更好的替代能源。更具体地说，一次能源的不可再生特性使得寻找相应的替代能源尤为重要。热是原油的最佳替代能源，而电力却是不可替代的。预期结果将为指导城市能源代谢体系改革提供科学依据，以期协调能源发展战略，改善能源消费结构，维护能源安全稳定。 （C）2019由Elsevier Ltd.发布

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