The transformation and driving factors of multi-linkage embodied carbon emission in the Yangtze River Economic Belt
The transformation and driving factors of multi-linkage embodied carbon emission in the Yangtze River Economic Belt
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长江经济带碳排放多重联动转型及驱动因素
DOI：
10.1016/j.ecolind.2021.107622
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发表时间：
2021-07
影响因子：
6.9
通讯作者：
Danyang Wang
中科院分区：
文献类型：
--
作者：
Xinxian Qi;Xianjin Huang;Yaya Song;Xiaowei Chuai;Changyan Wu;Danyang Wang
长江经济带作为亚洲最大的河流，拥有大量的人口和产业，产生了巨大的碳排放。然而，这样一个具有多重地理联系的大区域的贸易引起的环境影响在河流的环境政策中总是被忽视，即使它有望在过渡期的背景下发生动态变化。通过将大区域尺度纳入多区域投入产出框架，研究发现：(1)长江经济带从传统流域向综合消费型经济带转型；长白河经济带区域的具体排放量在地方和国际联系中所占的比例在减少，而在跨河段和区域间联系中所占的比例在增加；(2)长江经济带从北方碳密集地区进口碳排放，向排放强度较低的南方出口碳排放，加剧了南北差距；(3)污染港假说效应在2002年在跨河段联动中存在，但在2012年由于发展和消费模式的变化而消失。通过结构分解分析，发现多联系下隐含排放变化的驱动因素，为具有综合经济联系的大流域环境治理提供协调缓解措施。
As the largest river in Asia with masses of population and industries along the riverside, the Yangtze River Economic Belt (YREB) produces tremendous carbon emissions. However, trade-induced environmental impacts of such a megaregion with multiple geographic linkages are always neglected in the river’s environmental policies, even as it is expected to change dynamically in the context of a transition period. By incorporating the megaregion scale into the multiregional input and output framework, our main findings are as follows: (1) The YREB region transformed from a traditional river basin to a comprehensive consumption-oriented economic belt. The proportions of the YREB region’s embodied emissions in local and international linkages are decreasing, while the proportions of that in cross reach and interregional linkages are increasing; (2) The YREB region exacerbates the gap between the north and the south by importing carbon emissions from the carbon-intensive north and exporting to the south with low emission intensity; (3) The Pollution Haven Hypothesis (PHH) effect held in 2002 in the cross reach linkage, while disappeared in 2012 due to changes in development and consumption patterns.Through structural decomposition analysis, this study detects driving factors of embodied emissions changes in multi linkages, and provides coordinating mitigation actions for the environmental governance of large river basins with comprehensive economic linkages.
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