Global vegetation biomass production efficiency constrained by models and observations

Global vegetation biomass production efficiency constrained by models and observations

© 2019 John Wiley & Sons Ltd.

Détails bibliographiques
Publié dans:Global change biology. - 1999. - 26(2020), 3 vom: 25. März, Seite 1474-1484
Auteur principal: He, Yue (Auteur)
Autres auteurs: Peng, Shushi, Liu, Yongwen, Li, Xiangyi, Wang, Kai, Ciais, Philippe, Arain, M Altaf, Fang, Yuanyuan, Fisher, Joshua B, Goll, Daniel, Hayes, Daniel, Huntzinger, Deborah N, Ito, Akihiko, Jain, Atul K, Janssens, Ivan A, Mao, Jiafu, Matteo, Campioli, Michalak, Anna M, Peng, Changhui, Peñuelas, Josep, Poulter, Benjamin, Qin, Dahe, Ricciuto, Daniel M, Schaefer, Kevin, Schwalm, Christopher R, Shi, Xiaoying, Tian, Hanqin, Vicca, Sara, Wei, Yaxing, Zeng, Ning, Zhu, Qiuan
Format: Article en ligne
Langue:English
Publié: 2020
Accès à la collection:Global change biology
Sujets:Journal Article Research Support, Non-U.S. Gov't BPE biomass production carbon sink emergent constraint terrestrial biosphere model Carbon Dioxide 142M471B3J Carbon 7440-44-0
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245 1 0 |a Global vegetation biomass production efficiency constrained by models and observations 
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500 |a Citation Status MEDLINE 
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520 |a Plants use only a fraction of their photosynthetically derived carbon for biomass production (BP). The biomass production efficiency (BPE), defined as the ratio of BP to photosynthesis, and its variation across and within vegetation types is poorly understood, which hinders our capacity to accurately estimate carbon turnover times and carbon sinks. Here, we present a new global estimation of BPE obtained by combining field measurements from 113 sites with 14 carbon cycle models. Our best estimate of global BPE is 0.41 ± 0.05, excluding cropland. The largest BPE is found in boreal forests (0.48 ± 0.06) and the lowest in tropical forests (0.40 ± 0.04). Carbon cycle models overestimate BPE, although models with carbon-nitrogen interactions tend to be more realistic. Using observation-based estimates of global photosynthesis, we quantify the global BP of non-cropland ecosystems of 41 ± 6 Pg C/year. This flux is less than net primary production as it does not contain carbon allocated to symbionts, used for exudates or volatile carbon compound emissions to the atmosphere. Our study reveals a positive bias of 24 ± 11% in the model-estimated BP (10 of 14 models). When correcting models for this bias while leaving modeled carbon turnover times unchanged, we found that the global ecosystem carbon storage change during the last century is decreased by 67% (or 58 Pg C) 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a BPE 
650 4 |a biomass production 
650 4 |a carbon sink 
650 4 |a emergent constraint 
650 4 |a terrestrial biosphere model 
650 7 |a Carbon Dioxide  |2 NLM 
650 7 |a 142M471B3J  |2 NLM 
650 7 |a Carbon  |2 NLM 
650 7 |a 7440-44-0  |2 NLM 
700 1 |a Peng, Shushi  |e verfasserin  |4 aut 
700 1 |a Liu, Yongwen  |e verfasserin  |4 aut 
700 1 |a Li, Xiangyi  |e verfasserin  |4 aut 
700 1 |a Wang, Kai  |e verfasserin  |4 aut 
700 1 |a Ciais, Philippe  |e verfasserin  |4 aut 
700 1 |a Arain, M Altaf  |e verfasserin  |4 aut 
700 1 |a Fang, Yuanyuan  |e verfasserin  |4 aut 
700 1 |a Fisher, Joshua B  |e verfasserin  |4 aut 
700 1 |a Goll, Daniel  |e verfasserin  |4 aut 
700 1 |a Hayes, Daniel  |e verfasserin  |4 aut 
700 1 |a Huntzinger, Deborah N  |e verfasserin  |4 aut 
700 1 |a Ito, Akihiko  |e verfasserin  |4 aut 
700 1 |a Jain, Atul K  |e verfasserin  |4 aut 
700 1 |a Janssens, Ivan A  |e verfasserin  |4 aut 
700 1 |a Mao, Jiafu  |e verfasserin  |4 aut 
700 1 |a Matteo, Campioli  |e verfasserin  |4 aut 
700 1 |a Michalak, Anna M  |e verfasserin  |4 aut 
700 1 |a Peng, Changhui  |e verfasserin  |4 aut 
700 1 |a Peñuelas, Josep  |e verfasserin  |4 aut 
700 1 |a Poulter, Benjamin  |e verfasserin  |4 aut 
700 1 |a Qin, Dahe  |e verfasserin  |4 aut 
700 1 |a Ricciuto, Daniel M  |e verfasserin  |4 aut 
700 1 |a Schaefer, Kevin  |e verfasserin  |4 aut 
700 1 |a Schwalm, Christopher R  |e verfasserin  |4 aut 
700 1 |a Shi, Xiaoying  |e verfasserin  |4 aut 
700 1 |a Tian, Hanqin  |e verfasserin  |4 aut 
700 1 |a Vicca, Sara  |e verfasserin  |4 aut 
700 1 |a Wei, Yaxing  |e verfasserin  |4 aut 
700 1 |a Zeng, Ning  |e verfasserin  |4 aut 
700 1 |a Zhu, Qiuan  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Global change biology  |d 1999  |g 26(2020), 3 vom: 25. März, Seite 1474-1484  |w (DE-627)NLM098239996  |x 1365-2486  |7 nnas 
773 1 8 |g volume:26  |g year:2020  |g number:3  |g day:25  |g month:03  |g pages:1474-1484 
856 4 0 |u http://dx.doi.org/10.1111/gcb.14816  |3 Volltext 
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