Evaluation of Air Pollution Tolerance Index of Selected Tree Species along Roadsides in Vidyanagar, Gujarat (India)
Journal: International Journal of Science and Research (IJSR) (Vol.8, No. 1)Publication Date: 2019-01-05
Authors : Leena Abraham;
Page : 886-890
Keywords : Air Pollution Tolerance Index; Relative Water Content; Ascorbic Acid; pH; tolerance; bioinidicators;
Abstract
Air Pollution Tolerance Index (APTI) is used by landscapers to select plant species tolerant to air pollution. To develop the usefulness of plants as bioindicators requires an appropriate selection of plant species which entail an utmost importance for a particular situation. Four physiological and biochemical parameters including leaf relative water content (RWC), ascorbic acid (AA) content, total leaf chlorophyll (TCh) and leaf extract pH were used to develop an APTI. The present study was designed to categorise trees commonly used as roadside plantations, as sensitive or resistant based on their air pollution tolerance index (APTI) values. The study area selected for the same was the educational hub of Gujarat State i. e. Vidyanagar. The seasonal variations in the APTI values of the selected tree species were studied. From the present study the order of tolerance of the selected tree species was Cassia renigeragreater thanCassia fistulagreater than Delonix regiagreater thanAzadirachta indica greater thanSamanea saman greater thanFicus religiosa greater thanAlbizzia amara greater thanPeltophorum pterocarpumgreater thanLagerstroemia indicagreater thanPongamia pinnata. It could be also noted that the tree species belonging to Cesalpinaceae family showed greater tolerance to air pollution as compared to other trees. The results of such studies are handy for future town planning.
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