气候变化领域集成服务门户(CCPortal): Coupling of Phosphorus Processes With Carbon and Nitrogen Cycles in the Dynamic Land Ecosystem Model: Model Structure, Parameterization, and Evaluation in Tropical Forests

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DOI	10.1029/2020MS002123
	Coupling of Phosphorus Processes With Carbon and Nitrogen Cycles in the Dynamic Land Ecosystem Model: Model Structure, Parameterization, and Evaluation in Tropical Forests
	Wang Z.; Tian H.; Yang J.; Shi H.; Pan S.; Yao Y.; Banger K.; Yang Q.
发表日期	2020
ISSN	19422466
卷号	12 期号:10
英文摘要	The biogeochemical processes of carbon (C), nitrogen (N), and phosphorous (P) are fully coupled in the Earth system, which shape the structure, functioning, and dynamics of terrestrial ecosystems. However, the representation of P cycle in terrestrial biosphere models (TBMs) is still in an early stage. Here we incorporated P processes and C-N-P interactions into the C-N coupled Dynamic Land Ecosystem Model (DLEM-CNP), which had a major feature of the ability in simulating the N and P colimitation on vegetation C assimilation. DLEM-CNP was intensively calibrated and validated against daily or annual observations from four eddy covariance flux sites, two Hawaiian sites along a chronosequence of soils, and other 13 tropical forest sites. The results indicate that DLEM-CNP significantly improved simulations of forest gross and net primary production (R2: 0.36–0.97, RMSE:1.1–1.49 g C m−2 year−1 for daily GPP at eddy covariance flux sites; R2 = 0.92, RMSE = 176.7 g C m−2 year−1 for annual NPP across 13 tropical forest sites). The simulations were also consistent with field observations in terms of biomass, leaf N:P ratio and plant response to fertilizer addition. A sensitivity analysis suggests that simulated results are reasonably robust against uncertainties in model parameter estimates and the model was very sensitive to parameters of P uptake. These results suggest that incorporating P processes and N-P interaction into terrestrial biosphere models is of critical importance for accurately estimating C dynamics in tropical forests, particularly those P-limited ones. © 2020. The Authors.
英文关键词	biogeochemistry; Earth System Model; phosphorus cycle; phosphorus limitation; terrestrial ecology
语种	英语
scopus关键词	Biospherics; Carbon; Forestry; Parameter estimation; Phosphorus; Sensitivity analysis; Tropics; Uncertainty analysis; Biogeochemical process; Carbon and nitrogen; Coupled dynamics; Field observations; Net primary production; Simulated results; Terrestrial biosphere; Terrestrial ecosystems; Ecosystems; biomass; chronosequence; climate modeling; ecosystem modeling; fertilizer application; model validation; net primary production; nutrient uptake; parameterization; phosphorus cycle; terrestrial ecosystem; terrestrial environment; tropical forest
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156616
作者单位	International Center for Climate and Global Change Research and School of Forestry and Wildlife Sciences, Auburn University, Auburn, AL, United States; College of Forest Resources, Mississippi State University, Mississippi State, MS, United States; Research Center for Eco-Environmental Sciences, State Key Laboratory of Urban and Regional Ecology, Chinese Academy of Sciences, Beijing, China; Plant Agriculture, University of Guelph, Guelph, ON, Canada; Department of Infrastructure Engineering, University of Melbourne, Parkville, Melbourne, Australia
推荐引用方式 GB/T 7714	Wang Z.,Tian H.,Yang J.,et al. Coupling of Phosphorus Processes With Carbon and Nitrogen Cycles in the Dynamic Land Ecosystem Model: Model Structure, Parameterization, and Evaluation in Tropical Forests[J],2020,12(10).
APA	Wang Z..,Tian H..,Yang J..,Shi H..,Pan S..,...&Yang Q..(2020).Coupling of Phosphorus Processes With Carbon and Nitrogen Cycles in the Dynamic Land Ecosystem Model: Model Structure, Parameterization, and Evaluation in Tropical Forests.Journal of Advances in Modeling Earth Systems,12(10).
MLA	Wang Z.,et al."Coupling of Phosphorus Processes With Carbon and Nitrogen Cycles in the Dynamic Land Ecosystem Model: Model Structure, Parameterization, and Evaluation in Tropical Forests".Journal of Advances in Modeling Earth Systems 12.10(2020).