Carbon exchange between ecosystems and atmosphere in the Czech Republic is affected by climate factors

0358868 - ÚVGZ 2012 RIV GB eng J - Článek v odborném periodiku
Marek, Michal V. - Janouš, Dalibor - Taufarová, Klára - Havránková, Kateřina - Pavelka, Marian - Kaplan, Věroslav - Marková, I.
Carbon exchange between ecosystems and atmosphere in the Czech Republic is affected by climate factors.
Environmental Pollution. Roč. 159, č. 5 (2011), s. 1035-1039. ISSN 0269-7491. E-ISSN 1873-6424
Grant CEP: GA MŽP(CZ) SP/1A6/108/07; GA MŠMT 2B06068
Výzkumný záměr: CEZ:AV0Z60870520
Klíčová slova: carbon fluxes * net ecosystem exchange * spruce forest * beech forest * Grassland * agroecosystem * wetland * climate factors
Kód oboru RIV: EH - Ekologie - společenstva
Impakt faktor: 3.746, rok: 2011

By comparing five ecosystem types in the Czech Republic over several years, we recorded the highest carbon sequestration potential in an evergreen Norway spruce forest (100%) and an agroecosystem (65%), followed by European beech forest (25%) and a wetland ecosystem (20%). Because of a massive ecosystem respiration, the final carbon gain of the grassland was negative. Climate was shown to be an important factor of carbon uptake by ecosystems: by varying the growing season length (a 22-d longer season in 2005 than in 2007 increased carbon sink by 13%) or by the effect of short- term synoptic situations (e.g. summer hot and dry days reduced net carbon storage by 58% relative to hot and wet days). Carbon uptake is strongly affected by the ontogeny and a production strategy which is demonstrated by the comparison of seasonal course of carbon uptake between coniferous (Norway spruce) and deciduous (European beech) stands.
Trvalý link: http://hdl.handle.net/11104/0196785