Seasonal CO2-exchange variations of temperate semi-desert grassland in Hungary

J. Balogh, Sz Fóti, A. Juhász, Sz Czóbel, Z. Nagy, Z. Tuba

Research output: Contribution to journalArticle

8 Citations (Scopus)


CO2 exchange components of a temperate semi-desert sand grassland ecosystem in Hungary were measured 21 times in 2000-2001 using a closed IRGA system. Stand CO2 uptake and release, soil respiration rate (R s), and micrometeorological values were determined with two types of closed system chambers to investigate the daily courses of gas exchange. The maximum CO2 uptake and release were -3.240 and 1.903 μmol m-2 s-1, respectively, indicating a relatively low carbon sequestration potential. The maximum and the minimum R s were 1.470 and 0.226 μmol(CO2) m-2 s-1, respectively. Water shortage was probably more effective in decreasing photosynthetic rates than R s, indicating water supply as the primary driving variable for the sink-source relations in this ecosystem type.

Original languageEnglish
Pages (from-to)107-110
Number of pages4
Issue number1
Publication statusPublished - Mar 1 2005


  • Chamber technique
  • Net ecosystem CO exchange
  • Soil respiration
  • Soil water content

ASJC Scopus subject areas

  • Physiology
  • Plant Science

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