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Contribution of increasing CO2 and climate change to the carbon cycle in China's ecosystems


Metadata FieldValueLanguage
dc.contributorQiaozhen Mu, qiaozhen@ntsg.umt.eduen_US
dc.creatorMu, Qiaozhen
dc.creatorZhao, Maosheng
dc.creatorRunning, Steven
dc.creatorLiu, Mingliang
dc.creatorTian, Hanqin
dc.date.accessioned2022-12-06T18:20:47Z
dc.date.available2022-12-06T18:20:47Z
dc.date.created2008
dc.identifier10.1029/2006JG000316en_US
dc.identifier.urihttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2006JG000316en_US
dc.identifier.urihttps://aurora.auburn.edu/handle/11200/50476
dc.identifier.urihttp://dx.doi.org/10.35099/aurora-544
dc.description.abstractAtmospheric CO2 and China's climate have changed greatly during 1961-2000. The influence of increased CO2 and changing climate on the carbon cycle of the terrestrial ecosystems in China is still unclear. In this article we used a process-based ecosystem model, Biome-BGC, to assess the effects of changing climate and elevated atmospheric CO2 on terrestrial China's carbon cycle during two time periods: (1) the present (1961 2000) and (2) a future with projected climate change under doubled CO2 (2071-2110). The effects of climate change alone were estimated by driving Biome-BGC with a fixed CO2 concentration and changing climate, while the CO2 fertilization effects were calculated as the difference between the results driven by both increasing CO2 and changing climate and those of variable climate alone. Model simulations indicate that during 1961-2000 at the national scale, changes in climate reduced carbon storage in China's ecosystems, but increasing CO2 compensated for these adverse effects of climate change, resulting in an overall increase in the carbon storage of China's ecosystems despite decreases in soil carbon. The interannual variability of the carbon cycle was associated with climate variations. Regional differences in climate change produced differing regional carbon uptake responses. Spatially, reductions in carbon in vegetation and soils and increases in litter carbon were primarily caused by climate change in most parts of east China, while carbon in vegetation, soils, and litter increased for much of west China. Under the future scenario (2071-2110), with a doubling CO2, China will experience higher precipitation and temperature as predicted by the Hadley Centre HadCM3 for the Intergovernmental Panel on Climate Change Fourth Assessment. The concomitant doubling of CO2 will continue to counteract the negative effects of climate change on carbon uptake in the future, leading to an increase in carbon storage relative to current levels. This study highlights the role of CO2 fertilization in the carbon budget of China's ecosystems, although future studies should include other important processes such as land use change, human management (e. g., fertilization and irrigation), environmental pollution, etc.en_US
dc.formatPDFen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.ispartofJournal of Geophysical Research: Biogeosciencesen_US
dc.relation.ispartofseries2169-8953en_US
dc.rights©American Geophysical Union 2008. This is this the version of record co-published by the American Geophysical Union and John Wiley & Sons, Inc. It is made available under the CC-BY-NC-ND 4.0 license. Item should be cited as: Mu, Qiaozhen, et al. "Contribution of increasing CO2 and climate change to the carbon cycle in China's ecosystems." Journal of Geophysical Research: Biogeosciences 113.G1 (2008).en_US
dc.titleContribution of increasing CO2 and climate change to the carbon cycle in China's ecosystemsen_US
dc.typeTexten_US
dc.type.genreJournal Article, Academic Journalen_US
dc.citation.volume113en_US
dc.citation.issueG1en_US
dc.description.statusPublisheden_US
dc.description.peerreviewYesen_US
dc.creator.orcid0000-0002-1806-4091en_US
dc.creator.orcid0000-0002-1963-5933en_US

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