Modeling canopy CO2 exchange in the European Russian Arctic

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Standard

Modeling canopy CO2 exchange in the European Russian Arctic. / Kiepe, Isabell; Friborg, Thomas; Herbst, Mathias; Johansson, Torbjorn; Søgaard, Henrik.

I: Arctic, Antarctic, and Alpine Research, Bind 45, Nr. 1, 2013, s. 50-63.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Kiepe, I, Friborg, T, Herbst, M, Johansson, T & Søgaard, H 2013, 'Modeling canopy CO2 exchange in the European Russian Arctic', Arctic, Antarctic, and Alpine Research, bind 45, nr. 1, s. 50-63. https://doi.org/10.1657/1938-4246-45.1.50

APA

Kiepe, I., Friborg, T., Herbst, M., Johansson, T., & Søgaard, H. (2013). Modeling canopy CO2 exchange in the European Russian Arctic. Arctic, Antarctic, and Alpine Research, 45(1), 50-63. https://doi.org/10.1657/1938-4246-45.1.50

Vancouver

Kiepe I, Friborg T, Herbst M, Johansson T, Søgaard H. Modeling canopy CO2 exchange in the European Russian Arctic. Arctic, Antarctic, and Alpine Research. 2013;45(1):50-63. https://doi.org/10.1657/1938-4246-45.1.50

Author

Kiepe, Isabell ; Friborg, Thomas ; Herbst, Mathias ; Johansson, Torbjorn ; Søgaard, Henrik. / Modeling canopy CO2 exchange in the European Russian Arctic. I: Arctic, Antarctic, and Alpine Research. 2013 ; Bind 45, Nr. 1. s. 50-63.

Bibtex

@article{c2c72d400d424299b3d0c1a8f0a6d7e1,
title = "Modeling canopy CO2 exchange in the European Russian Arctic",
abstract = "In this study, we use the coupled photosynthesis-stomatal conductance model of Collatz et al. (1991) to simulate the current canopy carbon dioxide exchange of a heterogeneous tundra ecosystem in European Russia. For the parameterization, we used data obtained from in situ leaf level measurements in combination with meteorological data from 2008. The modeled CO2 fluxes were compared with net ecosystem exchange (NEE), measured by the eddy covariance technique during the snow-free period in 2008. The findings from this study indicated that the main state parameters of the exchange processes were leaf area index (LAI) and Rubisco capacity (v(cmax)). Furthermore, this ecosystem was found to be functioning close to its optimum temperature regarding carbon accumulation rates. During the modeling period from May to October, the net assimilation was greater than the respiration, leading to a net accumulation of 58 g C m(-2). The model results suggest that the tundra ecosystem could change from a carbon sink to a carbon source with a temperature rise of only 2-3 degrees C. This is due to the fact that, in the continental Arctic, a global warming of a few degrees might restrict the net assimilation, due to high temperatures, whereas the respiration is predicted to be enhanced. However, future changes in vegetation composition and growth, along with acclimation to the new thermal regime, might facilitate the assimilation to counterbalance the carbon losses.",
author = "Isabell Kiepe and Thomas Friborg and Mathias Herbst and Torbjorn Johansson and Henrik S{\o}gaard",
year = "2013",
doi = "10.1657/1938-4246-45.1.50",
language = "English",
volume = "45",
pages = "50--63",
journal = "Arctic, Antarctic, and Alpine Research",
issn = "1523-0430",
publisher = "University of Colorado Institute of Arctic and Alpine Research",
number = "1",

}

RIS

TY - JOUR

T1 - Modeling canopy CO2 exchange in the European Russian Arctic

AU - Kiepe, Isabell

AU - Friborg, Thomas

AU - Herbst, Mathias

AU - Johansson, Torbjorn

AU - Søgaard, Henrik

PY - 2013

Y1 - 2013

N2 - In this study, we use the coupled photosynthesis-stomatal conductance model of Collatz et al. (1991) to simulate the current canopy carbon dioxide exchange of a heterogeneous tundra ecosystem in European Russia. For the parameterization, we used data obtained from in situ leaf level measurements in combination with meteorological data from 2008. The modeled CO2 fluxes were compared with net ecosystem exchange (NEE), measured by the eddy covariance technique during the snow-free period in 2008. The findings from this study indicated that the main state parameters of the exchange processes were leaf area index (LAI) and Rubisco capacity (v(cmax)). Furthermore, this ecosystem was found to be functioning close to its optimum temperature regarding carbon accumulation rates. During the modeling period from May to October, the net assimilation was greater than the respiration, leading to a net accumulation of 58 g C m(-2). The model results suggest that the tundra ecosystem could change from a carbon sink to a carbon source with a temperature rise of only 2-3 degrees C. This is due to the fact that, in the continental Arctic, a global warming of a few degrees might restrict the net assimilation, due to high temperatures, whereas the respiration is predicted to be enhanced. However, future changes in vegetation composition and growth, along with acclimation to the new thermal regime, might facilitate the assimilation to counterbalance the carbon losses.

AB - In this study, we use the coupled photosynthesis-stomatal conductance model of Collatz et al. (1991) to simulate the current canopy carbon dioxide exchange of a heterogeneous tundra ecosystem in European Russia. For the parameterization, we used data obtained from in situ leaf level measurements in combination with meteorological data from 2008. The modeled CO2 fluxes were compared with net ecosystem exchange (NEE), measured by the eddy covariance technique during the snow-free period in 2008. The findings from this study indicated that the main state parameters of the exchange processes were leaf area index (LAI) and Rubisco capacity (v(cmax)). Furthermore, this ecosystem was found to be functioning close to its optimum temperature regarding carbon accumulation rates. During the modeling period from May to October, the net assimilation was greater than the respiration, leading to a net accumulation of 58 g C m(-2). The model results suggest that the tundra ecosystem could change from a carbon sink to a carbon source with a temperature rise of only 2-3 degrees C. This is due to the fact that, in the continental Arctic, a global warming of a few degrees might restrict the net assimilation, due to high temperatures, whereas the respiration is predicted to be enhanced. However, future changes in vegetation composition and growth, along with acclimation to the new thermal regime, might facilitate the assimilation to counterbalance the carbon losses.

U2 - 10.1657/1938-4246-45.1.50

DO - 10.1657/1938-4246-45.1.50

M3 - Journal article

VL - 45

SP - 50

EP - 63

JO - Arctic, Antarctic, and Alpine Research

JF - Arctic, Antarctic, and Alpine Research

SN - 1523-0430

IS - 1

ER -

ID: 118821444