Claim · model-written summary
Daily minimum carbon dioxide flux was near minus twenty during full leaf expansion.
Verbatim
e0“Daily minima of CO 2 flux were typically around −20 µmol CO 2 m −2 s −1 during the period of full leaf expansion”
t0“Beech forest”
Title
The carbon balance of a young Beech forest
A. Granier; E. Ceschia; C. Damesin; et al. Functional Ecology 2000. doi:10.1046/j.1365-2435.2000.00434.x
Other claims from this paper (15)
- Observation Night ecosystem respiration ranged from five to fifteen micromoles.
- Association Seasonal net ecosystem assimilation closely matched branch assimilation.
- Association Seasonal ecosystem exchange related to leaf expansion and soil water in dry 1996.
- Observation Ecosystem respiration peaked in spring and summer at four to seven grams carbon daily.
- Association Ecosystem respiration appeared correlated with soil temperature.
- Association Soil respiration showed a similar temporal pattern and responses to temperature and drying.
- Observation Annual soil respiration was about seventy percent of ecosystem respiration.
- Observation Root respiration made up sixty percent of belowground respiration.
- Observation Net carbon exchange in 1996 was minus 218 grams carbon per square meter.
- Observation Net carbon exchange in 1997 was minus 257 grams carbon per square meter.
- Observation Biomass increment was 427 in 1996 and 471 in 1997.
- Mechanism The carbon balance discrepancy may reflect woody debris decomposition.
- Observation Annual ecosystem carbon loss from respiration was 800 to 1000 grams per square meter.
- Observation Annual gross carbon gain was 1000 to 1300 grams per square meter.
- Observation Authors concluded ecosystem respiration was a major part of annual forest carbon balance.