Assessment of China's virtual air pollution transport embodied in trade by using a consumption-based emission inventory
Assessment of China's virtual air pollution transport embodied in trade by using a consumption-based emission inventory
复制标题
DOI：
10.5194/acp-15-5443-2015
复制
发表时间：
2015-01-01
影响因子：
6.3
通讯作者：
He, K. B.
中科院分区：
文献类型：
--
作者：
Zhao, H. Y.;Zhang, Q.;He, K. B.
中国大量的人为排放导致了严重的空气污染，这引起了学术界和公众的极大关注。对空气污染物在大气中的物理迁移进行了广泛的研究;然而，了解污染物如何通过经济和贸易活动转移的机制仍然是一个挑战。本文首次利用多区域投入产出模型框架，对中国省际贸易中的大气污染物排放流进行了定量和跟踪。评估了2007年中国各省四种主要空气污染物（初级细颗粒物、二氧化硫、氮氧化物和非甲烷挥发性有机化合物）的贸易相对排放量。我们发现，由于省际贸易，排放量在各省之间进行了显著的再分配。东部地区从北方和中部地区进口的大量排放是由地区经济地位和环境政策的差异决定的。建议在国家协定范围内，通过整合跨区域的消费者和生产者，鼓励供应链效率的提高，优化国际消费结构，引入减少空气污染的措施。在这项工作中开发的基于消费的空气污染物排放清单可以进一步用于归因于各种经济活动和最终需求类型的空气质量模型的帮助下的污染。
Substantial anthropogenic emissions from China have resulted in serious air pollution, and this has generated considerable academic and public concern. The physical transport of air pollutants in the atmosphere has been extensively investigated; however, understanding the mechanisms how the pollutant was transferred through economic and trade activities remains a challenge. For the first time, we quantified and tracked China's air pollutant emission flows embodied in interprovincial trade, using a multiregional input-output model framework. Trade relative emissions for four key air pollutants (primary fine particle matter, sulfur dioxide, nitrogen oxides and non-methane volatile organic compounds) were assessed for 2007 in each Chinese province. We found that emissions were significantly redistributed among provinces owing to interprovincial trade. Large amounts of emissions were embodied in the imports of eastern regions from northern and central regions, and these were determined by differences in regional economic status and environmental policy. It is suggested that measures should be introduced to reduce air pollution by integrating cross-regional consumers and producers within national agreements to encourage efficiency improvement in the supply chain and optimize consumption structure internationally. The consumption-based air pollutant emission inventory developed in this work can be further used to attribute pollution to various economic activities and final demand types with the aid of air quality models.