Impact of ozone pollution on gross primary productivity during a large-scale emission reduction: Implications for strengthening carbon sink over megacity clusters in China
大規模排出削減期間中のオゾン汚染が総一次生産性に与える影響：中国のメガシティ群における炭素吸収源強化への示唆 (AI 翻訳)
Danni Xu, Anjie Yin, Puyu Lian, Fei Qiu, Qidong Yang, Yuheng Chen, Kaihui Zhao
🤖 gxceed AI 要約
日本語
中国のメガシティ群を対象に、COVID-19ロックダウン中の大規模排出削減を利用し、オゾン汚染が植物の総一次生産性（GPP）に与える影響を評価。大気質モデルを用いて、オゾンと相対湿度がGPP被害に及ぼす影響を定量化し、NOx排出削減が炭素吸収源の回復に重要であることを示した。
English
This study evaluates the impact of ozone pollution on gross primary productivity (GPP) during the COVID-19 lockdown in China's megacity clusters. Using an air quality model, it quantifies the roles of ozone and relative humidity in GPP damage, highlighting that NOx emission reductions are crucial for mitigating GPP loss and enhancing carbon sinks.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本の大気汚染対策と炭素吸収源の維持にも示唆を与える。特に、NOx排出削減が植物の炭素吸収に与える影響は、日本の都市緑化や森林管理政策にも関連する。
In the global GX context
This research provides empirical evidence on the co-benefits of air pollution control and carbon sequestration, relevant to global climate policy discussions on nature-based solutions and emission reduction strategies.
👥 読者別の含意
🔬研究者:Provides quantitative insights into ozone-GPP interactions and the role of NOx control in enhancing carbon sinks.
🏢実務担当者:Offers evidence for corporate environmental strategies that consider air quality and carbon sequestration co-benefits.
🏛政策担当者:Highlights the importance of integrated air quality and climate policies for achieving carbon neutrality.
📄 Abstract（原文）
Ozone (O 3 ) pollution poses a significant threat to plant growth and diminishes ecosystem carbon sequestration capacity in China, representing a critical challenge to achieving “dual carbon” goals. A large-scale emission reduction that occurred during the Coronavirus disease 2019 lockdown offered a great opportunity to understand the complex mechanisms behind the impact of meteorology and emissions on gross primary productivity damage (GPP d ). Hence, a state-of-the-art air quality model was used to assess the underlying linkages between O 3 , relative humidity (RH), and GPP d during the lockdown period, and to calculate the contribution of individual physical processes and chemical reaction on GPP d levels across six megacity clusters in China. The results showed that RH was more important in dry climate areas, which enhanced GPP d by 2%-4%, whereas MDA8 O 3 enhanced GPP d by 3%-4% in humid areas. A strong relationship observed between O 3 and GPP d variations and the O 3 precursor sensitivity (OPS) depicted that transferring the OPS to the NO x -limited regime is a prerequisite for achieving synergistic benefits in O 3 pollution reduction and GPP d mitigation. By tracking GPP d change response to the emission reduction, GPP d can be mitigated to varying degrees in six megacity clusters as anthropogenic emission reduction measures are implemented, especially across the tipping point of 40%. This study has important implications for achieving synergistic benefits in pollution reduction and carbon emission mitigation and highlights the importance of implementing sustained and deep NO x emission control measures to transfer OPS to the NO x -limited regime under carbon peaking and carbon neutrality vision.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.ecoenv.2026.120629first seen 2026-08-11 04:40:22
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