Determination of Air Pollution Tolerance Index (APTI) of Mangifera indica and Ficus religiosa in Pravaranagar Factory Area

Air pollution, a consequence of rapid industrialization and urban expansion, significantly impacts plant physiology and biochemistry. This study evaluates the Air Pollution Tolerance Index (APTI) of two tree species, Mangifera indica and Ficus religiosa, in the industrial vicinity of Pravaranagar Factory Area, Maharashtra, India. The APTI was determined by analyzing four key parameters: leaf extract pH, relative water content (RWC), total chlorophyll content (TCh), and ascorbic acid content (AAC). Results revealed that Mangifera indica exhibited a higher APTI of 18.97, indicating its tolerance to air pollution, while Ficus religiosa with an APTI of 10.67 was classified as sensitive. The elevated ascorbic acid content (9.2 mg/g) and substantial chlorophyll levels in Mangifera indica suggest its resilience to environmental stress. In contrast, Ficus religiosa showed lower tolerance, likely due to reduced ascorbic acid (2.1 mg/g) and RWC (82.40%). These findings recommend Mangifera indica as suitable plants for green belt development in industrial areas to mitigate air pollution. The study underscores the importance of APTI as a tool for selecting plant species for air quality improvement and sustainable landscaping.