Transpiration decreases as air becomes drier.
Photoinhibition means the decrease in photosynthesis due to
exposure to high temperature.
exposure to excess of CO2.
exposure to excess of light.
exposure to shortage of soil moisture.
Plant respiration captures CO2.
Unlike photosynhesis, plant respiration captures atmospheric oxygen and releases carbon dioxide.
High soil moisture leads to decreased photosynthesis.
In boreal upland forests, low soil moisture decreases the rate of photosynthesis.
Carbon capture is performed by the green parts of plants via photosynthesis.
The rate of respiration decreases with temperature.
Photosynthesis of a tree canopy is driven or influenced by
the total leaf area (LAI).
air temperature (T).
photosynthetically active solar radiation (PAR).
air humidity (VPD).
soil moisture (REW).
As plants respire, they release
Photosynthesis releases oxygen whereas respiration releases CO2.
To transform atmospheric CO2 into organic molecules, plants can use the energy from
Carbon becomes locked as part of the accumulating plant biomass as plants grow.
De-hardening in spring involves gradual re-hydration of the cells, recovery of photosynthetic capacity and a tight control of water loss.
At low air humidity, a plant closes its stomata to prevent transpiration. The action also decreases photosynthesis
What is the source of carbon that is assimilated in photosynthesis?
Early spring is a tricky time for plants due to the combination of sunny but still quite cold days.
The effect of light on photosynthesis has a clear saturating pattern: more light results in more photosynthesis but eventually leaves cannot take full advantage of all the extra light.