气候变化领域集成服务门户(CCPortal): Representing Nitrogen, Phosphorus, and Carbon Interactions in the E3SM Land Model: Development and Global Benchmarking

CCPortal

DOI	10.1029/2018MS001571
	Representing Nitrogen, Phosphorus, and Carbon Interactions in the E3SM Land Model: Development and Global Benchmarking
	Zhu Q.; Riley W.J.; Tang J.; Collier N.; Hoffman F.M.; Yang X.; Bisht G.
发表日期	2019
ISSN	19422466
起始页码	2238
结束页码	2258
卷号	11 期号:7
英文摘要	Over the past several decades, the land modeling community has recognized the importance of nutrient regulation on the global terrestrial carbon cycle. Implementations of nutrient limitation in land models are diverse, varying from applying simple empirical down-regulation of potential gross primary productivity under nutrient deficit conditions to more mechanistic treatments. In this study, we introduce a new approach to model multinutrient (nitrogen [N] and phosphorus [P]) limitations in the Energy Exascale Earth System Model (E3SM) Land Model version 1 (ELMv1-ECA). The development is grounded on (1) advances in representing multiple-consumer, multiple-nutrient competition; (2) a generic dynamic allocation scheme based on water, N, P, and light availability; (3) flexible plant CNP stoichiometry; (4) prognostic treatment of N and P constraints on several carbon cycle processes; and (5) global data sets of plant physiological traits. Through benchmarking the model against best knowledge of global plant and soil carbon pools and fluxes, we show that our implementation of nutrient constraints on the present-day carbon cycle is robust at the global scale. Compared with predecessor versions, ELMv1-ECA better predicts global-scale gross primary productivity, ecosystem respiration, leaf area index, vegetation biomass, soil carbon stocks, evapotranspiration, N2O emissions, and NO3 - leaching. Factorial experiments indicate that representing the phosphorus cycle improves modeled carbon fluxes, while considering dynamic allocation improves modeled carbon stock density. We also highlight the value of using the International Land Model Benchmarking (ILAMB) package to evaluate and document performance during model development. © 2019. The Authors.
语种	英语
scopus关键词	Benchmarking; Ecosystems; Nitrogen; Nutrients; Phosphorus; Photosynthesis; Phytoplankton; Carbon cycle process; Ecosystem respiration; Factorial experiment; Global benchmarking; Gross primary productivity; Nutrient limitations; Physiological trait; Terrestrial carbon cycle; Carbon; benchmarking; carbon; environmental modeling; global perspective; nitrogen; phosphorus
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/156963
作者单位	Climate and Ecosystem Sciences Division, Climate Sciences Department, Lawrence Berkeley National Laboratory, Berkeley, CA, United States; Computational Earth Sciences Group and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN, United States; Department of Civil and Environmental Engineering, University of Tennessee, Knoxville, TN, United States; Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN, United States
推荐引用方式 GB/T 7714	Zhu Q.,Riley W.J.,Tang J.,et al. Representing Nitrogen, Phosphorus, and Carbon Interactions in the E3SM Land Model: Development and Global Benchmarking[J],2019,11(7).
APA	Zhu Q..,Riley W.J..,Tang J..,Collier N..,Hoffman F.M..,...&Bisht G..(2019).Representing Nitrogen, Phosphorus, and Carbon Interactions in the E3SM Land Model: Development and Global Benchmarking.Journal of Advances in Modeling Earth Systems,11(7).
MLA	Zhu Q.,et al."Representing Nitrogen, Phosphorus, and Carbon Interactions in the E3SM Land Model: Development and Global Benchmarking".Journal of Advances in Modeling Earth Systems 11.7(2019).