FACTORS RESPONSIBLE FOR CHANGING TRENDS OF BIODIVERSITYIN EASTERN GHATS OF TAMIL NADUKanimozhi R., P. Balasubramaniam and Mohanraj V.
The present research study was conducted to find out the factors responsible for changing trends in biodiversityin Eastern Ghats of Tamil Nadu. Among the thirty two districts of Tamil Nadu, Salem andThiruvannamalai district were purposively selected. Since, the tribal population were found to be high.The study was conducted in two blocks namely Pethanaickenpalayam in Salem district and Jawadhu hillsin Thiruvannamalai district respectively. Totally 182 tribal respondents were selected based on proportionaterandom sampling method. The data was collected through personal interview method by using the well-structuredinterview schedule. The statistical method percentage analysis was used to analyse the collecteddata. Findings were meaningfully interpreted and relevant conclusions were drawn. The results showsthat introduction of new plant varieties (97.80 percent), deforestation (96.15 percent), erratic variation ofrainfall (94.50 per cent) and application of chemical fertilizer (91.75 percent) are the major factor responsiblefor changing trends of bio-diversity in the study area.