近日，大湾区城市环境安全与绿色发展教育部重点实验室学术带头人梁赛教授团队题为“Global Economic Structure Transition Boosts Atmospheric Mercury Emissions in China”的学术论文在国际期刊Earth's Future杂志上发表，论文第一作者为杨雪莼博士后，通讯作者为梁赛教授。

    论文DOI：https://doi.org/10.1029/2021EF002076

汞是一种有毒重金属，可对人体健康产生严重危害。人类活动是大气汞重要的排放源，每年约有30%的大气汞排放源于人类活动。在此背景下，全球128个国家、地区和组织签署了《关于汞的水俣公约》，旨在通过控制涉及汞的生产和贸易等人为活动，减少全球大气汞排放、降低人类的汞暴露风险。

中国是世界上最大的汞排放国（2015年中国大气汞排放量约占全球总排放的25%），是全球汞减排的关键。现有研究估算了中国人为源大气汞排放量、编制了国家和关键排放源的汞排放清单、并揭示了国内社会经济因素变化对大气汞排放的影响，为中国大气汞减排做出了重要贡献。然而，由于中国是全球贸易网络中的重要节点，全球经济结构转型（包括生产结构和最终需求结构变化）对中国社会经济发展以及随之而来的大气汞排放具有重要影响，但尚未得到充分研究。此外，现有研究多关注国内外最终需求对大气汞排放的影响、探讨优化最终需求结构的重要意义，但对全球生产结构转型的影响关注较少。

英文摘要：

As the “world factory,” China has the most massive anthropogenic atmospheric mercury (Hg) emissions in the world along with its intense production activities. The development of global society and economy, including technology development, consumption behavior evolution, population growth, and so on, would significantly affect China's production and thus the Hg emissions. Here we uncover critical global socioeconomic drivers of atmospheric Hg emission changes in China during 2005–2015. Results show that the transition of global economic structures (i.e., production and final demand structures) caused 179 tons of increase in China's atmospheric Hg emissions during this period if other factors remained constant, while the transition of foreign economic structures contributed as much as 83% (149 tons). More importantly, for the first time, we reveal the crucial role of production structure transition in foreign nations. The cumulative effect of foreign production structure transition during this period (93 tons) was larger than that of foreign final demand structure transition (56 tons). It is also far more extensive than the cumulative effect of China's production structure transition (9.5 tons). Previous studies on China's atmospheric Hg emissions driven by global final demand focused more on optimizing consumption behaviors. However, this study proves the significance of a greener global production structure for reducing anthropogenic atmospheric Hg emissions in China, thus implementing the Minamata Convention on Mercury.