Abstract
Scientific and public interest in acid deposition and its ecological impacts have increased throughout 1990s in East Asia (Northeast and Southeast Asia). After being established in 2001, the Acid Deposition Monitoring Network in East Asia (EANET) celebrates the 20th anniversary in 2021, and is now being expanded in scope reflecting the shifting social concern from acid deposition to broader air quality and climate change in recent years. This paper reviews the past 30 years of development of scientific research and policy related to acid deposition in East Asia. Since the onset of the twenty-first century, East Asia has had the highest SO2 and NOx emissions in the world by continents, with substantial economic developmental inequality among countries. An overview of studies on sulfur and nitrogen deposition, the acidification of inland water and forest soil, and forest decline reveal that although limited acidification of inland water and forest soils have been documented, no decline in the populations of fish and other aquatic biota has been reported in East Asia. After a review of policy-oriented modeling studies on source receptor relationships and the critical loads of sulfur and nitrogen in East Asia, the history of EANET and its success and challenges are discussed. Finally, the importance of epistemic communities as the interface between science and policy in the region is discussed. Regional governance and cooperation are essential for reducing the emission of greenhouse gases, especially short-lived climate pollutants and atmospheric pollutants to realize the co-benefits of global climate change mitigation and improved air quality.
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Acknowledgements
The authors would like to thank the staffs of ACAP—Shiro Hatakeyama, Tsuyoshi Ohizumi, Ken Yamashita, and Jun’ichi Kurokawa—for their support of this study, and Jun’ichi Kurokawa and Tsuyoshi Ohizumi for providing figures (Figs. 2 and 3, respectively). This study was partially funded by Niigata University. We would like to thank Editage (www.editage.com) for English language editing.
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Akimoto, H., Sato, K., Sase, H. et al. Development of science and policy related to acid deposition in East Asia over 30 years. Ambio 51, 1800–1818 (2022). https://doi.org/10.1007/s13280-022-01702-6
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DOI: https://doi.org/10.1007/s13280-022-01702-6