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Vegetation Functional Properties Determine Uncertainty of Simulated Ecosystem Productivity: A Traceability Analysis in the East Asian Monsoon Region


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dc.contributorHanqin Tian, tianhan@auburn.eduen_US
dc.creatorCui, Erqian
dc.creatorHuang, Kun
dc.creatorArain, Muhammad Altaf
dc.creatorFisher, Joshua B.
dc.creatorHuntzinger, Deborah N.
dc.creatorIto, Akihiko
dc.creatorLuo, Yiqi
dc.creatorJain, Atul K.
dc.creatorMao, Jiafu
dc.creatorMichalak, Anna M.
dc.creatorNiu, Shuli
dc.creatorParazoo, Nicholas C.
dc.creatorPeng, Changhui
dc.creatorPeng, Shushi
dc.creatorPoulter, Benjamin
dc.creatorRicciuto, Daniel M.
dc.creatorSchaefer, Kevin M.
dc.creatorSchwalm, Christoper R.
dc.creatorShi, Xiaoying
dc.creatorTian, Hanqin
dc.creatorWang, Weile
dc.creatorWang, Jinsong
dc.creatorWei, Yaxing
dc.creatorYan, Enrong
dc.creatorYan, Liming
dc.creatorZeng, Ning
dc.creatorZhu, Qiuan
dc.creatorXia, Jianyang
dc.date.accessioned2020-04-02T04:29:05Z
dc.date.available2020-04-02T04:29:05Z
dc.date.created2019-06
dc.identifier10.1029/2018GB005909en_US
dc.identifier.urihttps://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2018GB005909en_US
dc.identifier.urihttp://hdl.handle.net/11200/49784
dc.description.abstractGlobal and regional projections of climate change by Earth system models are limited by their uncertain estimates of terrestrial ecosystem productivity. At the middle to low latitudes, the East Asian monsoon region has higher productivity than forests in Europe-Africa and North America, but its estimate by current generation of terrestrial biosphere models (TBMs) has seldom been systematically evaluated. Here, we developed a traceability framework to evaluate the simulated gross primary productivity (GPP) by 15 TBMs in the East Asian monsoon region. The framework links GPP to net primary productivity, biomass, leaf area and back to GPP via incorporating multiple vegetation functional properties of carbon-use efficiency (CUE), vegetation C turnover time (tau(veg)), leaf C fraction (F-leaf), specific leaf area (SLA), and leaf area index (LAI)-level photosynthesis (P-LAI), respectively. We then applied a relative importance algorithm to attribute intermodel variation at each node. The results showed that large intermodel variation in GPP over 1901-2010 were mainly propagated from their different representation of vegetation functional properties. For example, SLA explained 77% of the intermodel difference in leaf area, which contributed 90% to the simulated GPP differences. In addition, the models simulated higher CUE (18.1 21.3%), tau(veg) (18.2 26.9%), and SLA (27.436.5%) than observations, leading to the overestimation of simulated GPP across the East Asian monsoon region. These results suggest the large uncertainty of current TBMs in simulating GPP is largely propagated from their poor representation of the vegetation functional properties and call for a better understanding of the covariations between plant functional properties in terrestrial ecosystems.en_US
dc.formatPDFen_US
dc.publisherAMER GEOPHYSICAL UNIONen_US
dc.relation.ispartofGlobal Biogeochemical Cyclesen_US
dc.relation.ispartofseries1944-9224en_US
dc.rights©American Geophysical Union 2019. 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: Cui, E., Huang, K., Arain, M. A., Fisher, J. B., Huntzinger, D. N., Ito, A., ... & Niu, S. (2019). Vegetation functional properties determine uncertainty of simulated ecosystem productivity: A traceability analysis in the East Asian monsoon region. Global Biogeochemical Cycles, 33(6), 668-689.en_US
dc.subjectcarbon-dioxide exchangeen_US
dc.subjectclimate-changeen_US
dc.subjectco2 exchangeen_US
dc.subjectearth system modelen_US
dc.subjectenvironmental driversen_US
dc.subjectflux measurementsen_US
dc.subjectforest ecosystemsen_US
dc.subjectgross primary productivityen_US
dc.subjectinitial conditionsen_US
dc.subjectintercomparison projecten_US
dc.subjectmodel uncertaintyen_US
dc.subjectMsTMIPen_US
dc.subjectprogram multiscale synthesisen_US
dc.subjectrelative importanceen_US
dc.subjectseasonal-variationen_US
dc.subjectvegetation functional propertyen_US
dc.titleVegetation Functional Properties Determine Uncertainty of Simulated Ecosystem Productivity: A Traceability Analysis in the East Asian Monsoon Regionen_US
dc.typeCollectionen_US
dc.type.genreJournal Article, Academic Journalen_US
dc.citation.volume33en_US
dc.citation.issue6en_US
dc.citation.spage668en_US
dc.citation.epage689en_US
dc.description.statusPublisheden_US
dc.description.peerreviewYesen_US
dc.creator.orcid0000-0002-1806-4091en_US

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