Controls on winter ecosystem respiration in temperate and boreal ecosystems

T. Wang, P. Ciais, S. L. Piao, C. Ottlé, P. Brender, F. Maignan, A. Arain, A. Cescatti, D. Gianelle, C. Gough, L. Gu, P. Lafleur, T. Laurila, B. Marcolla, H. Margolis, L. Montagnani, E. Moors, N. Saigusa, T. Vesala, G. Wohlfahrt & 11 others C. Koven, A. Black, E. Dellwik, A. Don, D. Hollinger, A. Knohl, Russell Monson, J. Munger, A. Suyker, A. Varlagin, S. Verma

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Winter CO 2 fluxes represent an important component of the annual carbon budget in northern ecosystems. Understanding winter respiration processes and their responses to climate change is also central to our ability to assess terrestrial carbon cycle and climate feedbacks in the future. However, the factors influencing the spatial and temporal patterns of winter ecosystem respiration (R eco) of northern ecosystems are poorly understood. For this reason, we analyzed eddy covariance flux data from 57 ecosystem sites ranging from ∼35° N to ∼70° N. Deciduous forests were characterized by the highest winter R eco rates (0.90 ± 0.39 g C m -2 d -1), when winter is defined as the period during which daily air temperature remains below 0 °C. By contrast, arctic wetlands had the lowest winter R eco rates (0.02 ± 0.02 g C m -2 d -1). Mixed forests, evergreen needle-leaved forests, grasslands, croplands and boreal wetlands were characterized by intermediate winter R eco rates (g C m -2 d -1) of 0.70(±0.33), 0.60(±0.38), 0.62(±0.43), 0.49(±0.22) and 0.27(±0.08), respectively. Our cross site analysis showed that winter air (T air) and soil (T soil) temperature played a dominating role in determining the spatial patterns of winter R eco in both forest and managed ecosystems (grasslands and croplands). Besides temperature, the seasonal amplitude of the leaf area index (LAI), inferred from satellite observation, or growing season gross primary productivity, which we use here as a proxy for the amount of recent carbon available for R eco in the subsequent winter, played a marginal role in winter CO 2 emissions from forest ecosystems. We found that winter R eco sensitivity to temperature variation across space (Q S) was higher than the one over time (interannual, Q T). This can be expected because Q S not only accounts for climate gradients across sites but also for (positively correlated) the spatial variability of substrate quantity. Thus, if the models estimate future warming impacts on R eco based on Q S rather than Q T, this could overestimate the impact of temperature changes.

Original languageEnglish (US)
Pages (from-to)2009-2025
Number of pages17
JournalBiogeosciences
Volume8
Issue number7
DOIs
StatePublished - 2011
Externally publishedYes

Fingerprint

ecosystem respiration
respiration
winter
ecosystems
ecosystem
air temperature
wetlands
grasslands
wetland
climate
climate feedback
temperature
carbon
carbon budget
eddy covariance
mixed forests
mixed forest
cell respiration
deciduous forests
deciduous forest

ASJC Scopus subject areas

  • Earth-Surface Processes
  • Ecology, Evolution, Behavior and Systematics

Cite this

Wang, T., Ciais, P., Piao, S. L., Ottlé, C., Brender, P., Maignan, F., ... Verma, S. (2011). Controls on winter ecosystem respiration in temperate and boreal ecosystems. Biogeosciences, 8(7), 2009-2025. https://doi.org/10.5194/bg-8-2009-2011

Controls on winter ecosystem respiration in temperate and boreal ecosystems. / Wang, T.; Ciais, P.; Piao, S. L.; Ottlé, C.; Brender, P.; Maignan, F.; Arain, A.; Cescatti, A.; Gianelle, D.; Gough, C.; Gu, L.; Lafleur, P.; Laurila, T.; Marcolla, B.; Margolis, H.; Montagnani, L.; Moors, E.; Saigusa, N.; Vesala, T.; Wohlfahrt, G.; Koven, C.; Black, A.; Dellwik, E.; Don, A.; Hollinger, D.; Knohl, A.; Monson, Russell; Munger, J.; Suyker, A.; Varlagin, A.; Verma, S.

In: Biogeosciences, Vol. 8, No. 7, 2011, p. 2009-2025.

Research output: Contribution to journalArticle

Wang, T, Ciais, P, Piao, SL, Ottlé, C, Brender, P, Maignan, F, Arain, A, Cescatti, A, Gianelle, D, Gough, C, Gu, L, Lafleur, P, Laurila, T, Marcolla, B, Margolis, H, Montagnani, L, Moors, E, Saigusa, N, Vesala, T, Wohlfahrt, G, Koven, C, Black, A, Dellwik, E, Don, A, Hollinger, D, Knohl, A, Monson, R, Munger, J, Suyker, A, Varlagin, A & Verma, S 2011, 'Controls on winter ecosystem respiration in temperate and boreal ecosystems', Biogeosciences, vol. 8, no. 7, pp. 2009-2025. https://doi.org/10.5194/bg-8-2009-2011
Wang T, Ciais P, Piao SL, Ottlé C, Brender P, Maignan F et al. Controls on winter ecosystem respiration in temperate and boreal ecosystems. Biogeosciences. 2011;8(7):2009-2025. https://doi.org/10.5194/bg-8-2009-2011
Wang, T. ; Ciais, P. ; Piao, S. L. ; Ottlé, C. ; Brender, P. ; Maignan, F. ; Arain, A. ; Cescatti, A. ; Gianelle, D. ; Gough, C. ; Gu, L. ; Lafleur, P. ; Laurila, T. ; Marcolla, B. ; Margolis, H. ; Montagnani, L. ; Moors, E. ; Saigusa, N. ; Vesala, T. ; Wohlfahrt, G. ; Koven, C. ; Black, A. ; Dellwik, E. ; Don, A. ; Hollinger, D. ; Knohl, A. ; Monson, Russell ; Munger, J. ; Suyker, A. ; Varlagin, A. ; Verma, S. / Controls on winter ecosystem respiration in temperate and boreal ecosystems. In: Biogeosciences. 2011 ; Vol. 8, No. 7. pp. 2009-2025.
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abstract = "Winter CO 2 fluxes represent an important component of the annual carbon budget in northern ecosystems. Understanding winter respiration processes and their responses to climate change is also central to our ability to assess terrestrial carbon cycle and climate feedbacks in the future. However, the factors influencing the spatial and temporal patterns of winter ecosystem respiration (R eco) of northern ecosystems are poorly understood. For this reason, we analyzed eddy covariance flux data from 57 ecosystem sites ranging from ∼35° N to ∼70° N. Deciduous forests were characterized by the highest winter R eco rates (0.90 ± 0.39 g C m -2 d -1), when winter is defined as the period during which daily air temperature remains below 0 °C. By contrast, arctic wetlands had the lowest winter R eco rates (0.02 ± 0.02 g C m -2 d -1). Mixed forests, evergreen needle-leaved forests, grasslands, croplands and boreal wetlands were characterized by intermediate winter R eco rates (g C m -2 d -1) of 0.70(±0.33), 0.60(±0.38), 0.62(±0.43), 0.49(±0.22) and 0.27(±0.08), respectively. Our cross site analysis showed that winter air (T air) and soil (T soil) temperature played a dominating role in determining the spatial patterns of winter R eco in both forest and managed ecosystems (grasslands and croplands). Besides temperature, the seasonal amplitude of the leaf area index (LAI), inferred from satellite observation, or growing season gross primary productivity, which we use here as a proxy for the amount of recent carbon available for R eco in the subsequent winter, played a marginal role in winter CO 2 emissions from forest ecosystems. We found that winter R eco sensitivity to temperature variation across space (Q S) was higher than the one over time (interannual, Q T). This can be expected because Q S not only accounts for climate gradients across sites but also for (positively correlated) the spatial variability of substrate quantity. Thus, if the models estimate future warming impacts on R eco based on Q S rather than Q T, this could overestimate the impact of temperature changes.",
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T1 - Controls on winter ecosystem respiration in temperate and boreal ecosystems

AU - Wang, T.

AU - Ciais, P.

AU - Piao, S. L.

AU - Ottlé, C.

AU - Brender, P.

AU - Maignan, F.

AU - Arain, A.

AU - Cescatti, A.

AU - Gianelle, D.

AU - Gough, C.

AU - Gu, L.

AU - Lafleur, P.

AU - Laurila, T.

AU - Marcolla, B.

AU - Margolis, H.

AU - Montagnani, L.

AU - Moors, E.

AU - Saigusa, N.

AU - Vesala, T.

AU - Wohlfahrt, G.

AU - Koven, C.

AU - Black, A.

AU - Dellwik, E.

AU - Don, A.

AU - Hollinger, D.

AU - Knohl, A.

AU - Monson, Russell

AU - Munger, J.

AU - Suyker, A.

AU - Varlagin, A.

AU - Verma, S.

PY - 2011

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N2 - Winter CO 2 fluxes represent an important component of the annual carbon budget in northern ecosystems. Understanding winter respiration processes and their responses to climate change is also central to our ability to assess terrestrial carbon cycle and climate feedbacks in the future. However, the factors influencing the spatial and temporal patterns of winter ecosystem respiration (R eco) of northern ecosystems are poorly understood. For this reason, we analyzed eddy covariance flux data from 57 ecosystem sites ranging from ∼35° N to ∼70° N. Deciduous forests were characterized by the highest winter R eco rates (0.90 ± 0.39 g C m -2 d -1), when winter is defined as the period during which daily air temperature remains below 0 °C. By contrast, arctic wetlands had the lowest winter R eco rates (0.02 ± 0.02 g C m -2 d -1). Mixed forests, evergreen needle-leaved forests, grasslands, croplands and boreal wetlands were characterized by intermediate winter R eco rates (g C m -2 d -1) of 0.70(±0.33), 0.60(±0.38), 0.62(±0.43), 0.49(±0.22) and 0.27(±0.08), respectively. Our cross site analysis showed that winter air (T air) and soil (T soil) temperature played a dominating role in determining the spatial patterns of winter R eco in both forest and managed ecosystems (grasslands and croplands). Besides temperature, the seasonal amplitude of the leaf area index (LAI), inferred from satellite observation, or growing season gross primary productivity, which we use here as a proxy for the amount of recent carbon available for R eco in the subsequent winter, played a marginal role in winter CO 2 emissions from forest ecosystems. We found that winter R eco sensitivity to temperature variation across space (Q S) was higher than the one over time (interannual, Q T). This can be expected because Q S not only accounts for climate gradients across sites but also for (positively correlated) the spatial variability of substrate quantity. Thus, if the models estimate future warming impacts on R eco based on Q S rather than Q T, this could overestimate the impact of temperature changes.

AB - Winter CO 2 fluxes represent an important component of the annual carbon budget in northern ecosystems. Understanding winter respiration processes and their responses to climate change is also central to our ability to assess terrestrial carbon cycle and climate feedbacks in the future. However, the factors influencing the spatial and temporal patterns of winter ecosystem respiration (R eco) of northern ecosystems are poorly understood. For this reason, we analyzed eddy covariance flux data from 57 ecosystem sites ranging from ∼35° N to ∼70° N. Deciduous forests were characterized by the highest winter R eco rates (0.90 ± 0.39 g C m -2 d -1), when winter is defined as the period during which daily air temperature remains below 0 °C. By contrast, arctic wetlands had the lowest winter R eco rates (0.02 ± 0.02 g C m -2 d -1). Mixed forests, evergreen needle-leaved forests, grasslands, croplands and boreal wetlands were characterized by intermediate winter R eco rates (g C m -2 d -1) of 0.70(±0.33), 0.60(±0.38), 0.62(±0.43), 0.49(±0.22) and 0.27(±0.08), respectively. Our cross site analysis showed that winter air (T air) and soil (T soil) temperature played a dominating role in determining the spatial patterns of winter R eco in both forest and managed ecosystems (grasslands and croplands). Besides temperature, the seasonal amplitude of the leaf area index (LAI), inferred from satellite observation, or growing season gross primary productivity, which we use here as a proxy for the amount of recent carbon available for R eco in the subsequent winter, played a marginal role in winter CO 2 emissions from forest ecosystems. We found that winter R eco sensitivity to temperature variation across space (Q S) was higher than the one over time (interannual, Q T). This can be expected because Q S not only accounts for climate gradients across sites but also for (positively correlated) the spatial variability of substrate quantity. Thus, if the models estimate future warming impacts on R eco based on Q S rather than Q T, this could overestimate the impact of temperature changes.

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