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In this modern world the quality of air is getting decline day by day by vehicle emission, rapid industrialization, agricultural practices etc. and the pollution of air is a major of concern throughout the world. Plants play a vital role in controlling the air pollutants as the have potential to tolerate contaminants. In the present study, Air Pollution Tolerance Index (APTI) and Anticipated performance index (API) was calculated to observe the tolerant potential of three plant species in Haridwar area of Uttarakhand. The API not only takes APTI into consideration but also the biological and socio-economic aspect of the species. APTI was recorded highest in Azadirachta indica at site-1 and lowest APTI was recorded in Nerium indicum at site-3. In the present study API % score varies from 54% to 77% the highest API % score was recorded in Azadirachta indica and minimum API % score was recorded in Nerium indicum. The present study revealed that the assessments of above mention index with high APTI are significant in the reduction of urban air pollution and green belt designing.
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Nayak et al. (2018) studied this question.
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