Evaluation of air pollution tolerance index of selected plant species along roadsides in Thiruvanthapuram, Kerla.
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Date
2010-05
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Abstract
To develop the usefulness of plants as bioindicators requires an appropriate selection of plant species which entail an utmost
importance for a particular situation. In the present study a periodic evaluation of air pollution tolerance index [APTI] of selected tree species
such as Polyalthia longifolia, (Sonner) Thw., Alstonia scholaris, R. Br., Mangifera indica, L., and shrubs Clerodendron infortunatum, L.,
Eupatorium odoratum, L., and Hyptis suaveolens, (L.) Poit., growing adjacent to the National Highway – 47 passing through Thiruvananthapuram
District which lies on the south-west coast of India, was carried out with a view to find out the air pollution tolerance as well as sensitivity
of the plant species during different seasons. Among the trees in the roadside areas studied, Polyalthia longifolia, (Sonner) Thw., expressed
highest APTI values and proved to be a tolerant variety and the others as sensitive species to air pollutants. In the case of shrubs,
Clerodendron infortunatum, L., exhibited highest APTI values (7.34) and found to be more tolerant compared to the other two shrub species
studied.
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Keywords
Chlorophyll, Ascorbic acid, Air pollution tolerance index, Biomonitors
Citation
Jyothi S Jissy, Jaya D S. Evaluation of air pollution tolerance index of selected plant species along roadsides in Thiruvanthapuram, Kerla. Journal of Environmental Biology. 2010 May; 31(3): 379-386.