LOW, MODERATE & HIGH DUST CAPTURING
PLANT SPECIES
The analysis of data indicated that there were significant differences
among different plant species in intercepting particulate matter (PM2.5). The
data indicated the relative comparisons of the experimental species in terms of
their ability to remove PM2.5 (Table 6.1). Trees can act as efficient
biological filters, removing significant amounts of particulate pollution from
urban atmospheres. Up to some extend that trees they can control particulate pollution
there is potential for improved air quality and substantial cost savings. This
study will help to quantify the relative ability of individual tree species in
removing PM2.5. Therefore, urban trees can be evaluated by decision makers in
terms of money saved associated with avoided investment in new control
strategies.
It has been observed that some species indicate better efficiency in
removing particle pollution, the total contribution to pollution removal is
based on the canopy size as well as age and other plant and environmental
factors. It is therefore possible that a mature Popular species tree would contribute more to particle removal than a Jack fruit (Artocarpus integrifolia) tree due to the larger canopy size. Species with smaller total leaf areas seems to do a better task
of removing particles may be because of their extensive fatique and large
canopy area. However, it is to be mentioned that the leaf
morphology, anatomy & physiology of these trees are different. Stomata
conductance and net-photosynthetic capability of trees were affected by the
exposure to PM 2.5. The dust capturing efficiency of Plants (Table 6.2) is
depended upon the Morphological features of leaf, types of Stomata and the
Transpiration efficiency of plants.
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