ECOPERSIA
ECOPERSIA
ECOPERSIA
Basic Sciences
http://ecopersia.modares.ac.ir
1
admin
2322-2700
2538-2152
10.22034/ecopersia
en
jalali
1397
1
1
gregorian
2018
4
1
6
1
online
1
fulltext
en
The Effects of Airborne Pollutants and Climatic Factors of Different Sections of Tehran Areas on Leaf Characteristics of Oriental Plane (Platanus orientalis L.) Trees
<strong>Aims:</strong> This study was carried out to determine the effects of urban gaseous pollutants (sulfur dioxide [SO<sub>2</sub>], nitrogen dioxide [NO<sub>2</sub>], and ozone [O<sub>3</sub>]) and climatic factors (temperature and precipitation) on the morphological and anatomical reaction of Platanus orientalis L. in Tehran.<br>
<strong>Materials & Methods:</strong> Seven districts of this city with a wide spectrum of climatic conditions and diversity of elevation were selected, and gas concentration of SO<sub>2</sub>, NO<sub>2</sub>, and O<sub>3</sub> was determined. Then, morphological and anatomical parameters of this plant including leaf area, specific leaf area (SLA), wet and dry weight, leaf toughness and thickness, water content, lamina, and main vein were measured and the analysis of their correlations with environmental (climatic and pollutant) factors along with their t-tests were evaluated.<br>
<strong>Findings:</strong> The results showed that the climatic factors made significant (P < 0.05) changes on SLA, water content, wet and dry weight of green leaves of this plant. In addition, different levels of pollutant gases had significant (P < 0.05) effects on natural toughness, thickness, wet weight, number of spongy parenchyma layers, and the ratio of lamina mesophyll to subvein of leaves.<br>
<strong>Conclusion:</strong> The results explain that anatomical and morphological characteristics of P. orientalis leaves have been influenced by environmental stresses and changes in these factors show the resistance of the plant to the environmental conditions.
Air Pollution, Climate, Platanus orientalis, Specific Leaf Area
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http://ecopersia.modares.ac.ir/browse.php?a_code=A-24-18722-1&slc_lang=en&sid=24
F.
Rashidi
rashidi@rifr-ac.ir
100319475328460091511
100319475328460091511
Yes
Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
A.
Jalili
100319475328460091512
100319475328460091512
No
Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran