Resumen de Biomass and energy dynamics in a tribal village ecosystem of Orissa,India
M. K. Misra, S. P. Nayak, S. K. Nisanka
Biomass energy production and consumption patterns were investigated in Bhogibandha, a small tribal village ecosystem in the Eastern Ghats of India. The land area was 116.7 ha with 0.18 ha forest area per capita. Human population was 76 in 21 families. The livestock population in the village was low. Annual crop yield was 19.1 t on 13.9 ha of land. Annual collection of minor forest produce was 9.74 t. Annual energy consumption in terms of food was 278.4 GJ, fodder 929.6 GJ, liquor 20.9 GJ and fuelwood 636.5 GJ (excluding camp fire). Energy expenditure for agricultural, domestic and other daily activities in the village ecosystem was 122 GJ by human and 124 GJ by draught animals. The energy-flow pattern in the ecosystem shows annual production of 2062 GJ, consumption of 1917 GJ, out-flow (export) of 97 GJ and in-flow (import) of 235 GJ. Based on the energy-flow and large dependence on forest and forest products (mainly firewood for sale along with minor products), the village Bhogibandha was concluded to be an open, forest-dependent based village ecosystem. An energy-flow model was developed for the village ecosystem.
