首页|Contribution of China's carbon budget on global radiative forcing

Contribution of China's carbon budget on global radiative forcing

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China is the world's largest carbon dioxide(CO2)emitter and a major trading coun-try.Both anthropogenic and natural factors play a critical role in its carbon budget.However,previous studies mostly focus on evaluating anthropogenic emissions or the natural carbon cycle separately,and few included trade-related(import and export)CO2 emissions and its contribution on global warming.Using the CarbonTracker CT2019 assimilation dataset and China trade emissions from the Global Carbon Project,we found that the change trend of global CO2 flux had obvious spatial heterogeneity,which is mainly affected by anthropogenic CO2 flux.From 2000 to 2018,carbon emissions from fossil fuels in the world and in China all showed an obvious increasing trend,but the magnitude of the increase tended to slow down.In 2018,the radiative forcing(RF)caused by China's import and export trade was-0.0038 Wm-2,and the RF caused by natural carbon budget was-0.0027 W m-2,offsetting 1.54％and 1.13％of the RF caused by fossil fuels that year,respectively.From 2000 to 2018,the con-tribution of China's carbon emission from fossil fuels to global RF was 11.32％.Considering China's import and export trade,the contribution of anthropogenic CO2 emission to global RF decreased to 9.50％.Furthermore,taking into account the offset of carbon sink from China's terrestrial ecosystems,the net contribution of China to global RF decreased to 7.63％.This study demonstrates that China's terrestrial ecosystem and import and export trade are all mitigating China's impact on global anthropogenic warming,and also confirms that during the research process on climate change,comprehensively considering the carbon budget from anthropogenic and natural carbon budgets is necessary to systematically understand the impacts of regional or national carbon budgets on global warming.

Chinaanthropogenic carbon emissionsnatural carbon sinkscarbon dioxideradiative forcing con-tribution

LI Nan、CUI Yaoping、LIU Xiaoyan、SHI Zhifang、LI Mengdi、Michael E MEADOWS

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Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions(Henan University),Ministry of Education,Kaifeng 475004,Henan,China

College of Environment and Planning,Henan University,Kaifeng 475004,Henan,China

Dabieshan National Observation and Research Field Station of Forest Ecosystem at Henan,Xinyang 464000,Henan,China

Department of Environmental and Geographic Sciences,University of Cape Town,Rondebosch 7701,South Africa

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2025

10.1007/s11442-025-2320-9

地理学报(英文版)
中国地理学会,中国科学院地理科学与资源研究所

地理学报(英文版)

影响因子：1.307
ISSN：1009-637X
年,卷(期)：2025.35(2)