How the latent heat and sensible heat can be impacted by changes in vegetation?

Answer 1

For example,

daytime during summer

the

vegetation keeps the temperature low by transpiration,

that is mean the latent heat flux is high, and the sensible heat flux is low in the vegetation areas.

In particular, high net radiation appears in forests because the forest canopy absorbs more solar

radiation than other surfaces

but over the winter The latent heat flux is lower than the sensible

heat flux even in the forest. In the night time the sensible heat flux is reported to be very low or

negative during night on the forest canopy ( Kato and Yamaguchi, 2007).

The sensible heat

flux,

H, from the leaves do not originate from inside the leaf, but from the surface of the leaves

but Latent heat fluxes associated with the vapor from a plant. This must pass through several

resistors between the interior of the leaf and the airstream above the plant canopy (Dutton, 2012

).

Kell, (2002) through his study of energy and vegetation, he focused on the relationship between

leaf area index (LAI) and canopy resistances (Rc) and vegetation type.

His results indicated that

the temperature sensitivity, the equilibrium β decreases by a factor of three from10_C to

30_C (from 0.80 to 0.27).The effect of temperature on LEeq may explain some of the more

subtle differences between sites, such as the southern and more northern deciduous forests in

North America. The variability, was much greater in shorter vegetation and tundra, agricultural

and grassland larger Ra should make b less sensitive to both Rc and Ri, and more sensitive to

equilibrium evaporation when evaporation is less than the equilibrium value (a < 1).