Assessment of Tree Diversity in Agroforestry Systems

摘要

A study was undertaken in North Eastern part of Karnataka under rainfed agroecological situation to document the existing agroforestry systems practiced by the farmers and to assess the diversity and density of tree species in the existing agroforestry systems. There were three prominent agroforestry systems practiced by the farmers. Bund (38.33%) and boundary planting (38.33%) were the major systems practiced by the farmers followed by the scattered planting (22.22 %). The higher species density andnumber of trees per hectare was observed in boundary planting (5.68 and 34.21, respectively) followed by the bund planting (5.43 and 27.71, respectively) and scattered planting (4.63,20.19, respectively). Higher density of trees per hectare was observedwith large famers (34.63) followed by the medium farmers (30.93) and small farmers (21.69). Among the districts, higher tree density per hectare was observed in Koppal (31.00) followed by Bidar district (29.75) and the least density was observed in Kalaburagi district (26.33). Azadirachta indica, Acacia nilotica and Ziziphus mauritiana were the preferredspecies.