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Elevated CO$_{2}$ negates O$_{3}$ impacts on terrestrial carbon and nitrogen cycles

Xia, Longlong; Lam, Shu Kee; Kiese, Ralf; Chen, Del; Luo, Yiqi; Groenigen, Kees Jan van; Ainsworth, Elisabeth A.; Chen, Ji; Liu, Shuwei; Ma, Lei; Zhu, Yuhao; Butterbach-Bahl, Klaus


Increasing tropospheric concentrations of ozone (e[O$_{3}$]) and carbon dioxide (e[CO$_{2}$]) profoundly perturb terrestrial ecosystem functions through carbon and nitrogen cycles, affecting beneficial services such as their capacity to combat climate change and provide food. However, the interactive effects of e[O$_{3}$] and e[CO$_{2}$] on these functions and services remain unclear. Here, we synthesize the results of 810 studies (9,109 observations), spanning boreal to tropical regions around the world, and show that e[O$_{3}$] significantly decreases global net primary productivity and food production as well as the capacity of ecosystems to store carbon and nitrogen, which are stimulated by e[CO$_{2}$]. More importantly, simultaneous increases in [CO$_{2}$] and [O$_{3}$] negate or even overcompensate the negative effects of e[O$_{3}$3] on ecosystem functions and carbon and nitrogen cycles. Therefore, the negative effects of e[O$_{3}$] on terrestrial ecosystems would be overestimated if e[CO$_{2}$] impacts are not considered, stressing the need for evaluating terrestrial carbon and nitrogen feedbacks to concurrent changes in global atmospheric composition.

Verlagsausgabe §
DOI: 10.5445/IR/1000141466
Veröffentlicht am 27.12.2021
DOI: 10.1016/j.oneear.2021.11.009
Zitationen: 20
Web of Science
Zitationen: 21
Zitationen: 25
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 17.12.2021
Sprache Englisch
Identifikator ISSN: 2590-3330
KITopen-ID: 1000141466
HGF-Programm 12.11.22 (POF IV, LK 01) Managed ecosystems as sources and sinks of GHGs
Erschienen in One Earth
Band 4
Heft 12
Seiten 1752-1763
Vorab online veröffentlicht am 09.12.2021
Nachgewiesen in Dimensions
Web of Science
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