Study on Spatial and Seasonal Variation in APTI of Tree Species along Roads of Shivalik Foothills in Himachal Pradesh

The present study was conducted during the year 2018-2019 to determine impact of road on Air Pollution Tolerance Index (APTI) plants growing along road. A comparative done between three roads viz., National highway, State highway and Link Road. Among roads, link can be considered as control because vehicular emissions were minimal or non-existent. Three (Dalbergia sisso, Mangifera indica Ficus palmata) selected per their uniform presence all roads. Four biochemical parameters ascorbic acid, total chlorophyll, leaf extract pH relative water content used calculate air pollution tolerance index. Season wise maximum observed post monsoon season whereas chlorophyll pre season. APTI plant species ranged from 8.23 10.76 pre-monsoon 9.03 11.09 post-monsoon. Anticipated Performance (API) in order with highest API grade (6) it excellent among followed by Dalbergia sisso (5) very good palmata (3) moderate. Student t-test analysis seasonal variation tree carried out that there significant effect mean values acid no seasons content, content.