The isotopic measurements combined with the micrometeorologiocal observations were used to partition the net ecosystem CO2 exchange (NEE) of a C3-C4 rotation agricultural ecosystem into photosynthesis and respiration. The isotopic method provides real-time partitioning of NEE, and should lead to better understanding of the short-term ecophysiological processes than the regression method. The results showed that the partitioned photosynthesis and respiration were in accordance with the temperature regression method in magnitude during the full canopy stage. The partitioning was most sensitive to δ13Cb.
|Original language||English (US)|
|Number of pages||2|
|State||Published - Dec 1 2004|
|Event||26th Conference on Agricultural and Forest Meteorology - Vancouver, BC, Canada|
Duration: Aug 23 2004 → Aug 26 2004
|Other||26th Conference on Agricultural and Forest Meteorology|
|Period||8/23/04 → 8/26/04|