Early spring is a tricky time for plants due to the combination of sunny but still quite cold days.
In some part of the stems, some photosynthesis may also occur.
In general, the more carbon dioxide that is available to the plant, the faster the rate of photosynthesis - if other factors are favourable.
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.
Transpiration decreases as air becomes drier.
Photoinhibition means the decrease in photosynthesis due to
exposure to high temperature.
exposure to excess of light.
exposure to excess of CO2.
exposure to shortage of soil moisture.
At low air humidity, a plant closes its stomata to prevent transpiration. The action also decreases photosynthesis
A complex microbiota lives belowground, releasing carbon dioxide to the soil.
To transform atmospheric CO2 into organic molecules, plants can use the energy from
Plants open its stomata to avoid losing too much water.
Plant closes its stomata to avoid losing too much water.
Photosynthesis of a tree canopy is driven or influenced by
air temperature (T).
soil moisture (REW).
air humidity (VPD).
the total leaf area (LAI).
photosynthetically active solar radiation (PAR).
The annual cycle of photosynthesis mainly follows
the changes in soil temperature.
the changes in air temperature.
the changes in light.
the changes in CO2 concentration.
When there is low soil moisture, plants close its stomata pores which then decreases photosynthesis.
What is the source of carbon that is assimilated in photosynthesis?