globalchange  > 气候变化与战略
DOI: 10.1016/j.atmosres.2020.104859
Effects of atmospheric aerosols on terrestrial carbon fluxes and CO2 concentrations in China
Author: Xie X.; Wang T.; Yue X.; Li S.; Zhuang B.; Wang M.
Source Publication: Atmospheric Research
ISSN: 1698095
Publishing Year: 2020
Volume: 237
Language: 英语
Keyword: Aerosols ; Carbon dioxide ; China ; Diffuse radiation fertilization ; Terrestrial carbon fluxes
Scopus Keyword: Aerosols ; Air pollution ; Atmospheric chemistry ; Atmospheric thermodynamics ; Carbon dioxide ; Climate change ; Climate models ; Atmospheric carbon dioxide ; Carbon fluxes ; China ; Diffuse radiation ; Gross primary production ; Net ecosystem exchange ; Regional climate modeling ; Terrestrial carbon cycle ; Atmospheric aerosols ; aerosol ; atmospheric pollution ; carbon cycle ; carbon dioxide ; carbon flux ; carbon sink ; climate change ; concentration (composition) ; China
English Abstract: Atmospheric aerosols have contributed to the terrestrial carbon cycle through diffuse radiation fertilization effect and hydrometeorological feedbacks. Subsequently, perturbations in terrestrial carbon sink alter atmospheric carbon dioxide (CO2) concentrations and influence future climate change. Here, we use a regional climate model, RegCM4, coupled with the Yale Interactive terrestrial Biosphere model (YIBs) to assess the effects of the current aerosol loading on terrestrial carbon fluxes and atmospheric CO2 concentrations during 2006–2015 over China. We found that aerosols enhance gross primary production (GPP) by 0.36 Pg C yr−1 (5%), which primarily stems from Southwest and Southeast China. Meanwhile, the aerosol-induced diffuse fraction (DF) increase, surface cooling and vapor pressure deficit (VPD) decrease together lead to a − 0.06 Pg C yr−1 (21%) reduction in the net ecosystem exchange (NEE). Among them, aerosol-induced DF increment is found to be the dominant contributor, which covers ~ 59–62% of China's land area. The effects of aerosols on GPP and NEE are more evident in the growing season, with maximum effects occurring in July and August, respectively. Moreover, the terrestrial carbon sink enhancement due to aerosols further results in a significant decline in CO2 concentrations, with a large reduction (>2 ppm) found in southern and eastern parts of China during the summer. Our results highlight the importance of understanding the interactions among aerosol pollution, climate change, and the global carbon cycle. © 2020 Elsevier B.V.
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被引频次[WOS]:3   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
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Affiliation: School of Atmospheric Sciences, Nanjing University, Nanjing, 210023, China; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology (NUIST), Nanjing, 210044, China

Recommended Citation:
Xie X.,Wang T.,Yue X.,et al. Effects of atmospheric aerosols on terrestrial carbon fluxes and CO2 concentrations in China[J]. Atmospheric Research,2020-01-01,237
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