Facing Climate Change: Urban Gardening and Sustainable …
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Efficiency of reducing CO2%
after 15 min
Efficiency of reducing CO2%
after 10 min
Efficiency of reducing CO2%
after 5 min
Fig. 6 Efficiency of some ornamental trees grown in Egypt for reducing CO 2 /1000 cm 2 leaves area
[139]
the start of the carbon dioxide pollution, as well as after 10 min and after 15 min.
This is followed by Bauhinia variegate trees as in the following table.
On the other hand, studies were conducted on the most common trees and shrubs
cultivated in Egypt, from these studies on the transpiration of plants from their leaves
in the plant and this property depends on various factors:
(a) Plant type, including the anatomical structure of the leaves
(b) Climatic conditions prevailing in the region such as temperature and humidity
(c) Different soil conditions.
Scientific studies show that for transpiration of 1 g of water, plant require 633 Cal,
this amount of energy is withdrawn by the plant from the surrounding environment.
This energy is believed to affect heat reduction in the atmosphere. However, the
arrangement of the trees studied was not the same with the arrangement of trees in
the disposal of carbon dioxide.
The following is an explanation of some of the common species cultivated in
Egypt and have a role in the disposal of carbon dioxide that causes climate change
which is also important in tempering the atmosphere, which also affects climate
change (Table 3; Fig. 7).
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