Forest ecosystem as a source of CO2 during growing season: relation to weather conditions

• Autorzy: Taufarova K. , Havrankova K. , Dvorska A. , Pavelka M. , Urbaniak M. , Janous D.
• Języki publikacji: EN

Abstrakty

EN

Net ecosystem production reflects the potential of the ecosystem to sequestrate atmospheric CO2. Daily net ecosystem production of a mountain Norway spruce forest of the temperate zone (Czech Republic) was determined using the eddy covariance method. Growing season days when the ecosystem was a CO2 source were examined with respect to current weather conditions. During the 2005, 2006, and 2007 growing seasons, there were 44, 65, and 39 days, respectively, when the forest was a net CO2 source. The current weather conditions associated with CO2 release during the growing seasons were: cool and overcast conditions at the beginning or end of the growing seasons characterized by a 3-year mean net ecosystem production of -7.2 kg C ha-1 day-1; overcast or/and rainy days (-23.1 kg C ha-1 day-1); partly cloudy and hot days (-11.8 kg C ha-1 day-1); and overcast and hot days (-13.5 kg C ha-1 day-1). CO2 release was the highest during the overcast or/and rainy conditions (84%, average from all years), which had the greatest impact during the major production periods. As forests are important CO2 sinks and more frequent weather extremes are expected due to climate change, it is important to predict future forest carbon balances to study the influence of heightened variability in climatic variables.

Słowa kluczowe

EN

forest ecosystem; carbon dioxide; source; growing season; weather condition; Norway spruce

• Wydawca: -
• Czasopismo: International Agrophysics
• Rocznik: 2014
• Tom: 28
• Numer: 2
• Opis fizyczny: p.239-249,fig.,ref.

Twórcy

autor

Taufarova K.

• Global Change Research Centre AS CR, Bilidla 4a, 603 00 Brno, Czech Republic

autor

Havrankova K.

• Global Change Research Centre AS CR, Bilidla 4a, 603 00 Brno, Czech Republic

autor

Dvorska A.

• Global Change Research Centre AS CR, Bilidla 4a, 603 00 Brno, Czech Republic

autor

Pavelka M.

• Global Change Research Centre AS CR, Bilidla 4a, 603 00 Brno, Czech Republic

autor

Urbaniak M.

• Department of Meteorology, Poznan University of Life Sciences, Piatkowska 94b, 60-649 Poznan, Poland

autor

Janous D.

• Global Change Research Centre AS CR, Bilidla 4a, 603 00 Brno, Czech Republic

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