都市部における炭素排出の動態: 封鎖前と封鎖後の渦巻き共変量測定による比較分析

Lu Zhao¹, Hongxing Zhang², Xu Sun²

¹State Key Laboratory of Regional and Urban Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.

Journal of environmental sciences (China)

|August 21, 2025

まとめ

北京におけるCOVID-19の封鎖は2020年に都市における二酸化炭素 (CO2) 排出量を31.8%大幅に削減した. 減少は活動制限と関連しており,輸送

科学分野:

環境科学
大気化学
都市生態学

背景:

都市圏は大気中の二酸化炭素 (CO2) の主要な人為的源です.
都市における二酸化炭素排出量の長期的モニタリングは,気候変動を理解する上で極めて重要です.
COVID-19 パンデミックは,都市部におけるCO2フローへの人間の活動による影響を研究するためのユニークな自然実験を提供しました.

研究の目的:

北京におけるCO2排出量に対するCOVID-19規制の影響を分析する.
封じ込め措置のレベルとCO2フルースの変動との関係を調査する.
パンデミック中の都市部CO2排出に寄与する主要なセクターを特定する.

主な方法:

2015年から2020年までのCO2フロースのデータを分析するためにエディココバリアンス技術を使用した.
2020年のCOVID-19封鎖期間のCO2フロースを前年 (2015年−2019年) と比較した.
社会的流動性や経済的な制限の異なるレベルでのCO2フロースの変動を評価する.

主要な成果:

北京の年間CO2フローは2019年と比較して2020年に31.8%減少した.
二酸化炭素排出量の削減は,実施された制限の厳しさと直接相関していた.
交通量のピーク時刻である朝と夕方には排出量が大幅に減少した.

結論:

都市部におけるCO2排出の主要な要因は交通関連の活動です
輸送関連のCO2源をターゲットにすることは,都市における排出削減戦略の優先事項です.
CO2フロースの継続的なモニタリングは,政策の監督と炭素中立の目標の達成に役立ちます.

キーワード:

CO2 流量コロナウイルスエディの共変数都市部における炭素排出量

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