Structural analysis of embodied greenhouse gas emissions from key urban materials: A case study of Xiamen City, China
Structural analysis of embodied greenhouse gas emissions from key urban materials: A case study of Xiamen City, China
复制标题
城市主要材料隐含温室气体排放的结构分析：以中国厦门市为例
DOI：
10.1016/j.jclepro.2016.11.108
复制
发表时间：
2017-10
影响因子：
11.1
通讯作者：
Ulgiati Sergio
中科院分区：
文献类型：
--
作者：
Meng Fanxin;Liu Gengyuan;Yang Zhifeng;Hao Yan;Zhang Yan;Su Meirong;Ulgiati Sergio
传统的城市温室气体研究往往忽略在城市边界外购买的关键城市材料（范围3）所体现的间接温室气体排放（GHG），主要集中在城市内部发生的排放（范围1）和城市外购买的电力的排放（范围2）。而对于范围3上游供应链的结构分析研究较少。然而，全面的城市温室气体核算体系是城市制定适当减排措施的基础。识别主导上游供应链排放的主要温室气体有助于将注意力集中在最大的排放者身上，并为气候减缓努力的方向提供见解。因此，本研究采用经济投入产出-生命周期评估（EIO-LCA）方法评估范围3的温室气体隐含排放，并根据城市关键材料的最终需求探索上游供应链的相关温室气体排放结构。根据厦门市的特点，选取粮食、水、钢铁、水泥、燃料等为代表的城市物资。我们的结果表明，总隐含温室气体排放量为 13,201.31 kt CO2e，非常接近厦门市内最终使用部门的直接温室气体排放量。在温室气体隐含排放量中，进口钢材、燃料、水泥、食品和水分别占排放量的56%、26%、13%、4%和1%。在上游供应链中发现了主要的温室气体排放贡献者，并提出了一些相关的政策含义。与其他城市相比，厦门的人均温室气体排放量相对较低，比美国八个城市低5.24吨二氧化碳当量。
The indirect greenhouses gas emission (GHG) embodied in the key urban materials purchased outside the city boundary (Scope 3) are often ignored in traditional city GHG studies, mostly concentrating on the emissions occurring inside the city (Scope 1) and emissions by the purchased electricity out of boundary (Scope 2). And there is little research on the structural analysis of the upstream supply chain for Scope 3. However, a comprehensive urban GHG accounting system is the basis for cities to make appropriate mitigation measures. Identifying the main embodied GHG that dominate the emissions in upstream supply chains can help focus attention on the largest emitters and offer insights into where climate mitigation efforts should be directed. Thus, in this study the Economic Input Output – Life Cycle Assessment (EIO-LCA) approach was used to evaluate the embodied GHG emissions from Scope 3 and to explore the related GHG emissions structure in the upstream supply chain based on the final demand for the key urban materials. And food, water, steel, cement, and fuel were selected as the representative urban materials based on the characteristic of Xiamen City. Our results demonstrate that the total embodied GHG emissions were 13,201.31 kt CO2e, very close to the direct GHG emissions from end-use sectors inside Xiamen city. Among the embodied GHG emissions, imported steel, fuels, cement, food, and water accounted for 56, 26, 13, 4, and 1% of the emissions, respectively. The main embodied GHG emissions contributors were found in the upstream supply chain and some related policy implications were presented. Compared to other cities, Xiamen had a relatively low per capita embodied GHG emission, which was 5.24 t CO2e lower than eight U.S. cities.
登录
查看更多内容
影响因子：
11.4
作者：
L. Lave;E. Cobas-Flores;C. Hendrickson;F. McMichael
通讯作者：
L. Lave;E. Cobas-Flores;C. Hendrickson;F. McMichael
影响因子：
11.4
作者：
L. Macaskie;G. Bašnáková
通讯作者：
L. Macaskie;G. Bašnáková
影响因子：
--
作者：
Guo X;Liu Z;Wang X;Zhang H
通讯作者：
Zhang H
多责任主体多尺度投入产出分析：2007年北京市城市经济碳排放
影响因子：
0.8
作者：
Guo S.;Chen G.Q.
通讯作者：
Chen G.Q.
影响因子：
7.2
作者：
G. Peters
通讯作者：
G. Peters