Net grassland carbon flux over a subambient to superambient CO2 gradient
نویسندگان
چکیده
منابع مشابه
Root responses along a subambient to elevated CO2 gradient in a C3–C4 grassland
Atmospheric CO2 (Ca) concentration has increased significantly during the last 20 000 years, and is projected to double this century. Despite the importance of belowground processes in the global carbon cycle, community-level and single species root responses to rising Ca are not well understood. We measured net community root biomass over 3 years using ingrowth cores in a natural C3–C4 grassla...
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Measurement and modelling ozone fluxes over a cut and fertilized grassland R. Mészáros, L. Horváth, T. Weidinger, A. Neftel, E. Nemitz, U. Dämmgen, P. Cellier, and B. Loubet Department of Meteorology, Eötvös Loránd University, Pázmány Péter sétány 1/A, P.O. Box 32, 1518 Budapest, Hungary Hungarian Meteorological Service (HMS), Budapest, Hungary Institute of Environmental Protection and Agricult...
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Extreme climatic events (ECEs) such as droughts and heat waves are predicted to increase in intensity and frequency and impact the terrestrial carbon balance. However, we lack direct experimental evidence of how the net carbon uptake of ecosystems is affected by ECEs under future elevated atmospheric CO2 concentrations (eCO2). Taking advantage of an advanced controlled environment facility for ...
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Measurements of carbon dioxide and water vapour flux densities were carried out for a grassland area in the centre of the Netherlands during a 12 month continuous experiment using the eddy-covariance technique. Lolium perenne and Poa trivialis mainly dominated the vegetation of the area. The leaf area index (LAI) of the grassland varied between 2.5 and 3.4, depending on the mowing scheme at the...
متن کاملCorrecting eddy-covariance flux underestimates over a grassland
Independent measurements of the major energy balance flux components are not often consistent with the principle of conservation of energy. This is referred to as a lack of closure of the surface energy balance. Most results in the literature have shown the sum of sensible and latent heat fluxes measured by eddy covariance to be less than the difference between net radiation and soil heat fluxe...
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ژورنال
عنوان ژورنال: Global Change Biology
سال: 2001
ISSN: 1354-1013
DOI: 10.1046/j.1354-1013.2001.00445.x