Atmospheric Mercury Outflow from China and Interprovincial Trade
Atmospheric Mercury Outflow from China and Interprovincial Trade
复制标题
中国大气汞流出与省际贸易
DOI：
10.1021/acs.est.8b03951
复制
发表时间：
2018-12-04
影响因子：
11.4
通讯作者：
Shu, Jiong
中科院分区：
文献类型：
--
作者：
Chen, Long;Liang, Sai;Shu, Jiong
汞（Hg）具有在大陆间迁移的能力，对人体健康的危害引起了世界各国的高度关注。中国大量人为汞排放的跨境运输引起了特别关注，尤其是来自邻国的关注。本文采用联合收割机、质量收支分析和多区域投入产出模型相结合的方法，模拟了中国汞的大气外流，并考察了中国省际贸易对汞外流的影响。结果显示，2010年中国人为汞排放量为423.0毫克，占中国人为汞排放总量的65.9%。中国省际贸易促进了东部陆地边界（-6.4兆亿年（-1））向西部陆地边界（+4.5兆亿年（-1））的大气流出量转移，并使整个边界的大气流出量净减少，减少了来自中国的跨界汞污染对外国造成风险的机会。由于预计未来省际贸易将得到加强，省际贸易的这些影响将被放大。应考虑省际贸易与汞控制的协同促进效应，以减少来自中国的跨境汞污染。
Mercury (Hg) is characterized by its ability to migrate between continents and its adverse effects on human health, arousing great concern around the world. The transboundary transport of large anthropogenic Hg emissions from China has attracted particular attention, especially from neighboring countries. Here, we combine an atmospheric transport model, a mass budget analysis, and a multiregional input-output model to simulate the atmospheric Hg outflow from China and investigate the impacts of Chinese interprovincial trade on the outflow. The results show outflows of 423.0 Mg of anthropogenic Hg, consisting of 65.9% of the total Chinese anthropogenic emissions, from China in 2010. Chinese interprovincial trade promotes the transfer of atmospheric outflow from the eastern terrestrial boundary (-6.4 Mg year(-1)) to the western terrestrial boundary (+4.5 Mg year(-1)) and a net decrease in the atmospheric outflow for the whole boundary, reducing the chance of risks to foreign countries derived from transboundary Hg pollution from China. These impacts of interprovincial trade will be amplified due to the expected strengthened interprovincial trade in the future. The synergistic promotional effects of interprovincial trade versus Hg controls should be considered to reduce the transboundary Hg pollution from China.