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Contribution of photosynthesis and respiration to the net ecosystem exchange and ecosystem 13C discrimination of a sitka spruce

, 2015
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Modelling Net Ecosystem CO2 Exchange by Simple Tropical Ecosystem Model

Journal of Convergence Information Technology, 2010
SITE model was developed to study the response of tropical ecosystems according to environmental conditions for estimating of energy fluxes. This study analyzed the net ecosystem of CO2 exchange (NEE) by ecosystem modeling and field measurements in a semi deciduous forest located at 50 km of Sinop municipal district, Mato Grosso, Brazil.
Mariceia Tatiane Vilani, Mariele Pinheiro, Luciana Sanches Alves, Nara Luisa Reis de Andrade, Marcelo de Carvalho Alves, Jose de Souza Nogueira   +5 more
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Net ecosystem carbon exchange in two experimental grassland ecosystems

Global Change Biology, 2004
AbstractIncreases in net primary production (NPP) may not necessarily result in increased C sequestration since an increase in uptake can be negated by concurrent increases in ecosystem C losses via respiratory processes. Continuous measurements of net ecosystem C exchange between the atmosphere and two experimental cheatgrass (Bromus tectorum L ...
Paul S. J. Verburg, John A. Arnone, Daniel Obrist, David E. Schorran, R. David Evans, Debbie Leroux‐swarthout, Dale W. Johnson, Yiqi Luo, James S. Coleman   +8 more
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On the Separation of Net Ecosystem Exchange Into Assimilation and Ecosystem Respiration: Review and Improved Algorithm

Global Change Biology, 2005
Dario Papale, Markus Reichstein, Serge Rambal   +2 more
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Biotic, Abiotic, and Management Controls on the Net Ecosystem CO2 Exchange of European Mountain Grassland Ecosystems

Ecosystems, 2008
The net ecosystem carbon dioxide (CO2) exchange (NEE) of nine European mountain grassland ecosystems was measured during 2002-2004 using the eddy covariance method. Overall, the availability of photosynthetically active radiation (PPFD) was the single most important abiotic influence factor for NEE.
Wohlfahrt, G., Anderson Dunn, M., Bahn, M., Balzarolo, M., Berninger, F., Campbell, C., Carrara, A., Cescatti, A., Christensen, T., Dore, S., Eugster, W., Friborg, T., Furger, M., Gianelle, Damiano, Gimeno, C., Hargreaves, K., Hari, P., Haslwanter, A., Johannson, T., Marcolla, Barbara, Milford, C., Nagy, Z., Nemitz, E., Rogiers, N., Sanz, M. J., Siegwolf, R., Susiluoto, S., Sutton, M., Tuba, Z., Ugolini, F., Valentini, R., Zorer, Roberto, Cernusca, A.   +32 more
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Uncertainties in measurement and modelling of net ecosystem exchange of a forest

Agricultural and Forest Meteorology, 2006
Abstract At Hyytiala, SMEAR II measurement station in Southern Finland, the eddy covariance (EC) measurements of ecosystem exchange were performed above a Scots pine forest with two closely positioned flux measurement systems. The separation distance of about 30 m between the two systems surrounded by a homogeneous stand of the radius 200 m implies ...
Üllar Rannik, Pasi Kolari, Timo Vesala, Pertti Hari   +3 more
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Estimating net ecosystem exchange in a patterned ecosystem: Example from blanket bog

Agricultural and Forest Meteorology, 2006
Abstract Net ecosystem exchange (NEE) was measured in a patterned peatland with eddy covariance (EC) and chamber methods during a 12-month period. The peatland surface was composed of microforms characterized by a difference in water level and vegetation composition. The distribution of microforms varied spatially within the peatland.
Anna Laine, Matteo Sottocornola, Gerard Kiely, Kenneth A. Byrne, David Wilson, Eeva-Stiina Tuittila   +5 more
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On the relationship between cloudiness and net ecosystem carbon dioxide exchange in a peatland ecosystem

Écoscience, 2005
The relationship between incident light intensity and net ecosystem CO2 exchange (NEE) was examined at a low-shrub bog located near Ottawa, Canada. Shrub height was 0.25 m and maximum leaf area index was 1.3 at the peatland. Light intensity was expressed as a clearness index (CI), where values approaching zero indicate heavy overcast conditions and ...
Matthew G. Letts, Peter M. Lafleur, Nigel T. Roulet   +2 more
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Seasonal hysteresis of net ecosystem exchange in response to temperature change: patterns and causes

Global Change Biology, 2011
Abstract Understanding how net ecosystem exchange (NEE) changes with temperature is central to the debate on climate change‐carbon cycle feedbacks, but still remains unclear. Here, we used eddy covariance measurements of NEE from 20 FLUXNET sites (203 site‐years of data) in mid‐ and high‐latitude forests to investigate the temperature
Niu S, Luo Y, Fei S, Montagnani L, Bohrer G, Janssens IA, Gielen B, Rambal S, Moors E, Matteucci G   +9 more
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Tidal effects on net ecosystem exchange of carbon in an estuarine wetland

Agricultural and Forest Meteorology, 2009
One year of continuous data from two eddy-flux towers established along an elevation gradient in coastal Shanghai was analyzed to evaluate the tidal effect on carbon flux (Fc) over an estuarine wetland. The measured wavelet spectra and cospectra of Fc and other environmental factors demonstrated that the dynamics of Fc at both sites exhibited a tidal ...
Haiqiang Guo, Asko Noormets, Bin Zhao, Jiquan Chen, Ge Sun, Yongjian Gu, Bo Li, Jiakuan Chen   +7 more
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