Statistical upscaling of ecosystem CO2 fluxes across the terrestrial tundra and boreal domain : Regional patterns and uncertainties

© 2021 John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 27(2021), 17 vom: 16. Sept., Seite 4040-4059
1. Verfasser: Virkkala, Anna-Maria (VerfasserIn)
Weitere Verfasser: Aalto, Juha, Rogers, Brendan M, Tagesson, Torbern, Treat, Claire C, Natali, Susan M, Watts, Jennifer D, Potter, Stefano, Lehtonen, Aleksi, Mauritz, Marguerite, Schuur, Edward A G, Kochendorfer, John, Zona, Donatella, Oechel, Walter, Kobayashi, Hideki, Humphreys, Elyn, Goeckede, Mathias, Iwata, Hiroki, Lafleur, Peter M, Euskirchen, Eugenie S, Bokhorst, Stef, Marushchak, Maija, Martikainen, Pertti J, Elberling, Bo, Voigt, Carolina, Biasi, Christina, Sonnentag, Oliver, Parmentier, Frans-Jan W, Ueyama, Masahito, Celis, Gerardo, St Louis, Vincent L, Emmerton, Craig A, Peichl, Matthias, Chi, Jinshu, Järveoja, Järvi, Nilsson, Mats B, Oberbauer, Steven F, Torn, Margaret S, Park, Sang-Jong, Dolman, Han, Mammarella, Ivan, Chae, Namyi, Poyatos, Rafael, López-Blanco, Efrén, Christensen, Torben Røjle, Kwon, Min Jung, Sachs, Torsten, Holl, David, Luoto, Miska
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article Arctic CO2 balance empirical greenhouse gas land permafrost remote sensing Soil Carbon Dioxide mehr... 142M471B3J Carbon 7440-44-0
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100 1 |a Virkkala, Anna-Maria  |e verfasserin  |4 aut 
245 1 0 |a Statistical upscaling of ecosystem CO2 fluxes across the terrestrial tundra and boreal domain  |b Regional patterns and uncertainties 
264 1 |c 2021 
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500 |a Date Revised 17.08.2021 
500 |a published: Print-Electronic 
500 |a Citation Status MEDLINE 
520 |a © 2021 John Wiley & Sons Ltd. 
520 |a The regional variability in tundra and boreal carbon dioxide (CO2 ) fluxes can be high, complicating efforts to quantify sink-source patterns across the entire region. Statistical models are increasingly used to predict (i.e., upscale) CO2 fluxes across large spatial domains, but the reliability of different modeling techniques, each with different specifications and assumptions, has not been assessed in detail. Here, we compile eddy covariance and chamber measurements of annual and growing season CO2 fluxes of gross primary productivity (GPP), ecosystem respiration (ER), and net ecosystem exchange (NEE) during 1990-2015 from 148 terrestrial high-latitude (i.e., tundra and boreal) sites to analyze the spatial patterns and drivers of CO2 fluxes and test the accuracy and uncertainty of different statistical models. CO2 fluxes were upscaled at relatively high spatial resolution (1 km2 ) across the high-latitude region using five commonly used statistical models and their ensemble, that is, the median of all five models, using climatic, vegetation, and soil predictors. We found the performance of machine learning and ensemble predictions to outperform traditional regression methods. We also found the predictive performance of NEE-focused models to be low, relative to models predicting GPP and ER. Our data compilation and ensemble predictions showed that CO2 sink strength was larger in the boreal biome (observed and predicted average annual NEE -46 and -29 g C m-2  yr-1 , respectively) compared to tundra (average annual NEE +10 and -2 g C m-2  yr-1 ). This pattern was associated with large spatial variability, reflecting local heterogeneity in soil organic carbon stocks, climate, and vegetation productivity. The terrestrial ecosystem CO2 budget, estimated using the annual NEE ensemble prediction, suggests the high-latitude region was on average an annual CO2 sink during 1990-2015, although uncertainty remains high 
650 4 |a Journal Article 
650 4 |a Arctic 
650 4 |a CO2 balance 
650 4 |a empirical 
650 4 |a greenhouse gas 
650 4 |a land 
650 4 |a permafrost 
650 4 |a remote sensing 
650 7 |a Soil  |2 NLM 
650 7 |a Carbon Dioxide  |2 NLM 
650 7 |a 142M471B3J  |2 NLM 
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700 1 |a Aalto, Juha  |e verfasserin  |4 aut 
700 1 |a Rogers, Brendan M  |e verfasserin  |4 aut 
700 1 |a Tagesson, Torbern  |e verfasserin  |4 aut 
700 1 |a Treat, Claire C  |e verfasserin  |4 aut 
700 1 |a Natali, Susan M  |e verfasserin  |4 aut 
700 1 |a Watts, Jennifer D  |e verfasserin  |4 aut 
700 1 |a Potter, Stefano  |e verfasserin  |4 aut 
700 1 |a Lehtonen, Aleksi  |e verfasserin  |4 aut 
700 1 |a Mauritz, Marguerite  |e verfasserin  |4 aut 
700 1 |a Schuur, Edward A G  |e verfasserin  |4 aut 
700 1 |a Kochendorfer, John  |e verfasserin  |4 aut 
700 1 |a Zona, Donatella  |e verfasserin  |4 aut 
700 1 |a Oechel, Walter  |e verfasserin  |4 aut 
700 1 |a Kobayashi, Hideki  |e verfasserin  |4 aut 
700 1 |a Humphreys, Elyn  |e verfasserin  |4 aut 
700 1 |a Goeckede, Mathias  |e verfasserin  |4 aut 
700 1 |a Iwata, Hiroki  |e verfasserin  |4 aut 
700 1 |a Lafleur, Peter M  |e verfasserin  |4 aut 
700 1 |a Euskirchen, Eugenie S  |e verfasserin  |4 aut 
700 1 |a Bokhorst, Stef  |e verfasserin  |4 aut 
700 1 |a Marushchak, Maija  |e verfasserin  |4 aut 
700 1 |a Martikainen, Pertti J  |e verfasserin  |4 aut 
700 1 |a Elberling, Bo  |e verfasserin  |4 aut 
700 1 |a Voigt, Carolina  |e verfasserin  |4 aut 
700 1 |a Biasi, Christina  |e verfasserin  |4 aut 
700 1 |a Sonnentag, Oliver  |e verfasserin  |4 aut 
700 1 |a Parmentier, Frans-Jan W  |e verfasserin  |4 aut 
700 1 |a Ueyama, Masahito  |e verfasserin  |4 aut 
700 1 |a Celis, Gerardo  |e verfasserin  |4 aut 
700 1 |a St Louis, Vincent L  |e verfasserin  |4 aut 
700 1 |a Emmerton, Craig A  |e verfasserin  |4 aut 
700 1 |a Peichl, Matthias  |e verfasserin  |4 aut 
700 1 |a Chi, Jinshu  |e verfasserin  |4 aut 
700 1 |a Järveoja, Järvi  |e verfasserin  |4 aut 
700 1 |a Nilsson, Mats B  |e verfasserin  |4 aut 
700 1 |a Oberbauer, Steven F  |e verfasserin  |4 aut 
700 1 |a Torn, Margaret S  |e verfasserin  |4 aut 
700 1 |a Park, Sang-Jong  |e verfasserin  |4 aut 
700 1 |a Dolman, Han  |e verfasserin  |4 aut 
700 1 |a Mammarella, Ivan  |e verfasserin  |4 aut 
700 1 |a Chae, Namyi  |e verfasserin  |4 aut 
700 1 |a Poyatos, Rafael  |e verfasserin  |4 aut 
700 1 |a López-Blanco, Efrén  |e verfasserin  |4 aut 
700 1 |a Christensen, Torben Røjle  |e verfasserin  |4 aut 
700 1 |a Kwon, Min Jung  |e verfasserin  |4 aut 
700 1 |a Sachs, Torsten  |e verfasserin  |4 aut 
700 1 |a Holl, David  |e verfasserin  |4 aut 
700 1 |a Luoto, Miska  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Global change biology  |d 1999  |g 27(2021), 17 vom: 16. Sept., Seite 4040-4059  |w (DE-627)NLM098239996  |x 1365-2486  |7 nnns 
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856 4 0 |u http://dx.doi.org/10.1111/gcb.15659  |3 Volltext 
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