Plants open its stomata to avoid losing too much water.
Plant closes its stomata to avoid losing too much water.
As VPD increases, photosynthesis decreases due to the closure of the stomata.
"Stage of acclimation" refers to the seasonality of
the flowering activity.
the photosynthetic activity.
the litter fall activity.
the growth activity.
The air is moist if VPD (Vapour Pressure Deficit) is high.
Respiration is a cellular process to obtain chemical energy from
the oxidation of water.
the oxidation of organic molecules.
the oxidation of plant tissues.
the oxidation soil nutrients.
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.
Eftersom koldioxid kommer in i växten genom klyvöppningarna går assimilationen långsammare då klyvöppningarna tillsluts.
High soil moisture leads to decreased photosynthesis.
In boreal upland forests, low soil moisture decreases the rate of photosynthesis.
Leaf area increases with stand age, resulting in a decreasing rate of photosynthesis in the stand.
An increment in leaf area increases also the photosynthesis of a tree stand. However, the relationship is saturating.
Photoinhibition means the decrease in photosynthesis due to
exposure to shortage of soil moisture.
exposure to high temperature.
exposure to excess of light.
exposure to excess of CO2.
Photosynthesis of a shoot can be measured by enclosing it within a chamber and following the change of
PAR radiation next to the chamber.
carbon dioxide concentration in the air of this chamber.
water vapour concentration in the air of this chamber.
air temperature in this chamber.
Låga växter, mikroberna i marken och markens funktioner i allmänhet drar under vintern nytta av.
Välj ett alternative.
snöns isolerande inverkan
den ringa mängden solljus
trädens långsammare aktivitet
de låga temperaturerna
Since stomata are the same pores through which carbon dioxide enters into the leaves, the result of their closure is a reduction in photosynthesis.
REW stands for "Relative Extractable Water"
Photosynthesis shuts down if the temperature of previous night has been lower than