一种空间时间准实验因果推断方法用于利用遥感数据表征全球塑料垃圾出口和焚烧对空气质量的影响
A Spatiotemporal, Quasi-experimental Causal Inference Approach to Characterize the Effects of Global Plastic Waste Export and Burning on Air Quality Using Remotely Sensed Data
AI总结：
本文利用遥感数据和空间时间因果分析技术，研究全球塑料垃圾出口和焚烧对空气质量的影响，通过印尼2018年前后的情况，评估大规模塑料垃圾政策对空气质量的影响，发现中国禁令后PM2.5显著增加。
摘要：
塑料废物的开放式燃烧可能通过降低空气质量对全球健康构成重大威胁，但关于此问题的定量研究因数据缺乏而受到阻碍。许多低收入和中等收入国家，其中开放式燃烧最为令人担忧，几乎没有空气质量监测。本文利用遥感数据产品结合空间时间因果分析技术，评估大规模塑料废物政策对空气质量的影响。在整个研究过程中，我们研究了印尼在2018年前后的情况，当时中国停止进口塑料废物，导致这一庞大的废物流被转移至其他国家。我们为这种设置定制了尖端的统计方法，估计了增加的塑料废物进口对印度尼西亚废物填埋场附近细颗粒物（PM2.5）的影响，作为距离港口的接近程度的函数。我们观察到，中国禁令后（2018-2019年）每月PM2.5水平相对于预期的正常情况（2012-2017年）显著增加，当暴露于中等高港口接近度时，增加量高达1.68 μg/m³（95%置信区间=[0.72, 2.48]）。对于非常高的港口接近度暴露，效果更为温和，可能反映了政府监管更大的情况下，填埋/焚烧的增加较小。
英文摘要：
Open burning of plastic waste may pose a significant threat to global health by degrading air quality, but quantitative research on this problem -- crucial for policy making -- has been stunted by lack of data. Many low- and middle-income countries, where open burning is most concerning, have little to no air quality monitoring. Here, we leverage remotely sensed data products combined with spatiotemporal causal analytic techniques to evaluate the impact of large-scale plastic waste policies on air quality. Throughout, we study Indonesia before and after 2018, when China halted its import of plastic waste, resulting in diversion of this massive waste stream to other countries. We tailor cutting-edge statistical methods to this setting, estimating effects of increased plastic waste imports on fine particulate matter (PM$_{2.5}$) near waste dump sites in Indonesia as a function of proximity to ports, an induced continuous exposure. We observe strong evidence that monthly PM$_{2.5}$increased after China's ban (2018-2019) relative to expected business-as-usual (2012-2017), with increases up to 1.68 $μ$g/m$^3$ (95% CI = [0.72, 2.48]) when exposed to medium-high port proximity. Effects were more modest for very high port proximity exposure, possibly reflecting smaller increases in dumping/burning where government oversight is greater.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
