气候变化领域集成服务门户(CCPortal): GOLUM-CNP v1.0: a data-driven modeling of carbon, nitrogen and phosphorus cycles in major terrestrial biomes

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DOI	10.5194/gmd-11-3903-2018
	GOLUM-CNP v1.0: a data-driven modeling of carbon, nitrogen and phosphorus cycles in major terrestrial biomes
	Wang, Yilong; Ciais, Philippe; Goll, Daniel; Huang, Yuanyuan; Luo, Yiqi; Wang, Ying-Ping; Bloom, A. Anthony; Broquet, Gregoire; Hartmann, Jens; Peng, Shushi; Penuelas, Josep; Piao, Shilong; Sardans, Jordi; Stocker, Benjamin D.; Wang, Rong; Zaehle, Soenke; Zechmeister-Boltenstern, Sophie
通讯作者	Wang, YL (通讯作者)
发表日期	2018
ISSN	1991-959X
EISSN	1991-9603
起始页码	3903
结束页码	3928
卷号	11 期号:9
英文摘要	Global terrestrial nitrogen (N) and phosphorus (P) cycles are coupled to the global carbon (C) cycle for net primary production (NPP), plant C allocation, and decomposition of soil organic matter, but N and P have distinct pathways of inputs and losses. Current C-nutrient models exhibit large uncertainties in their estimates of pool sizes, fluxes, and turnover rates of nutrients, due to a lack of consistent global data for evaluating the models. In this study, we present a new model-data fusion framework called the Global Observation-based Land-ecosystems Utilization Model of Carbon, Nitrogen and Phosphorus (GOLUM-CNP) that combines the CARbon DAta MOdel fraMework (CAR-AMOM) data-constrained C-cycle analysis with spatially explicit data-driven estimates of N and P inputs and losses and with observed stoichiometric ratios. We calculated the steady-state N- and P-pool sizes and fluxes globally for large biomes. Our study showed that new N inputs from biological fixation and deposition supplied >20% of total plant uptake in most forest ecosystems but accounted for smaller fractions in boreal forests and grasslands. New P inputs from atmospheric deposition and rock weathering supplied a much smaller fraction of total plant uptake than new N inputs, indicating the importance of internal P recycling within ecosystems to support plant growth. Nutrient-use efficiency, defined as the ratio of gross primary production (GPP) to plant nutrient uptake, were diagnosed from our model results and compared between biomes. Tropical forests had the lowest N-use efficiency and the highest P-use efficiency of the forest biomes. An analysis of sensitivity and uncertainty indicated that the NPP-allocation fractions to leaves, roots, and wood contributed the most to the uncertainties in the estimates of nutrient-use efficiencies. Correcting for biases in NPP-allocation fractions produced more plausible gradients of N- and P-use efficiencies from tropical to boreal ecosystems and highlighted the critical role of accurate measurements of C allocation for understanding the N and P cycles.
关键词	GLOBAL PATTERNS BOREAL FOREST LEAF NITROGEN STOICHIOMETRIC FLEXIBILITY NUTRIENT CONCENTRATIONS ORGANIC NITROGEN SOIL-PHOSPHORUS DYNAMICS LAND TEMPERATURE
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000460485500001
来源期刊	GEOSCIENTIFIC MODEL DEVELOPMENT
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259388
推荐引用方式 GB/T 7714	Wang, Yilong,Ciais, Philippe,Goll, Daniel,et al. GOLUM-CNP v1.0: a data-driven modeling of carbon, nitrogen and phosphorus cycles in major terrestrial biomes[J]. 中国科学院青藏高原研究所,2018,11(9).
APA	Wang, Yilong.,Ciais, Philippe.,Goll, Daniel.,Huang, Yuanyuan.,Luo, Yiqi.,...&Zechmeister-Boltenstern, Sophie.(2018).GOLUM-CNP v1.0: a data-driven modeling of carbon, nitrogen and phosphorus cycles in major terrestrial biomes.GEOSCIENTIFIC MODEL DEVELOPMENT,11(9).
MLA	Wang, Yilong,et al."GOLUM-CNP v1.0: a data-driven modeling of carbon, nitrogen and phosphorus cycles in major terrestrial biomes".GEOSCIENTIFIC MODEL DEVELOPMENT 11.9(2018).