气候变化领域集成服务门户(CCPortal): Inverse Determination of the Influence of Fire on Vegetation Carbon Turnover in the Pantropics

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DOI	10.1029/2018GB005925
	Inverse Determination of the Influence of Fire on Vegetation Carbon Turnover in the Pantropics
	Exbrayat J.-F.; Smallman T.L.; Bloom A.A.; Hutley L.B.; Williams M.
发表日期	2018
ISSN	0886-6236
EISSN	1944-9224
起始页码	1776
结束页码	1789
卷号	32 期号:12
英文摘要	Fire is a major component of the terrestrial carbon cycle that has been implemented in most current global terrestrial ecosystem models. Here we use terrestrial carbon cycle observations to characterize the importance of fire regime gradients in the spatial distribution of ecosystem functional properties such as carbon allocation, fluxes, and turnover times in the tropics. A Bayesian model-data fusion approach is applied to an ecosystem carbon model to derive the posterior distribution of corresponding parameters for the tropics from 2000 to 2015. We perform the model-data fusion procedure twice, that is, with and without imposing fire. Gradient of differences in model parameters and ecosystem properties in response to fire emerge between these experiments. For example, mean annual burned fraction correlates with an increase in carbon use efficiency and reductions in carbon turnover times. Further, our analyses reveal an increased allocation to more fire-resistant tissues in the most frequently burned regions. As fire modules are increasingly implemented in global terrestrial ecosystem models, we recommend that model development includes a representation of the impact of fire on ecosystem properties as they may lead to large differences under climate change projections. ©2018. American Geophysical Union. All Rights Reserved.
英文关键词	fire; inverse modeling; model-data fusion; sensitivity; terrestrial carbon cycle; tropics
语种	英语
scopus关键词	Bayesian analysis; carbon; carbon cycle; climate change; data assimilation; fire; inverse analysis; sensitivity analysis; spatial distribution; terrestrial environment; tropical region; turnover; vegetation
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129769
作者单位	National Centre for Earth Observation and School of GeoSciences, University of Edinburgh, Edinburgh, United Kingdom; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Research Institute for the Environment and Livelihoods, Charles Darwin University, Darwin, NT, Australia
推荐引用方式 GB/T 7714	Exbrayat J.-F.,Smallman T.L.,Bloom A.A.,et al. Inverse Determination of the Influence of Fire on Vegetation Carbon Turnover in the Pantropics[J],2018,32(12).
APA	Exbrayat J.-F.,Smallman T.L.,Bloom A.A.,Hutley L.B.,&Williams M..(2018).Inverse Determination of the Influence of Fire on Vegetation Carbon Turnover in the Pantropics.Global Biogeochemical Cycles,32(12).
MLA	Exbrayat J.-F.,et al."Inverse Determination of the Influence of Fire on Vegetation Carbon Turnover in the Pantropics".Global Biogeochemical Cycles 32.12(2018).