Mr. Debajit Rabha
Department of Botany, Pandit Deendayal Upadhyaya Adarsha Mahavidyalaya
Amjonga, Goalpara, Assam, India
Title of presentation: CONTRIBUTION OF PAAN JHUM TOWARDS BIODIVERSITY CONSERVATION: A CASE STUDY OF BARAK VALLEY, ASSAM
PaanJhum is a unique traditional agro forestry system observed in the Northeast India. In Barak Valley of Assam it is practiced by the Khasi tribes for the betel leaf (Piper betel L.) in forest land assigned by the forest department. The present study deals with the quantitative characteristics of PaanJhum ecosystem in comparison to the natural forests ofKarimganj District, Assam. Species richness was found almost similar in both ecosystems. PaanJhum ecosystem was slightly more voluminous (41.01 m2 ha-1) although density was comparatively less than natural forest (39.65 m2 ha-1). Shannon-Weiner diversity index recorded slightly more in PaanJhum (3.97) than natural forests (3.78). In natural forest Toonaciliata was the most dominant species with IVI value 38.1 followed by Mesuaferrea (20.6), Artocarpuschama (13.7) while in PaanJhum,Terminaliabellirica (14.0), Artocarpuschama (12.4), Dysoxylumgotadhora(10.5) were the dominant species. Only few species share the maximum resource in natural forests whereas in PaanJhum maximum species share the major portion of resources.PaanJhumis a lesser known eco system and it might be very effective land use system in eco-economics perspectives which further needs more scientific attention.
Keywords: PaanJhum, Barak Valley, eco-economics, species diversity