Abstract
Extreme consumption of fuel woods as biomass energy has caused global depletion of forest in many developing countries. In focusing on the carbon neutral development, we evaluated reduction potential of carbon dioxide emission by substituting energy crops for fuel woods and fossil fuels based on the plantation scenarios of grass type biomass that could be harvested in one year cycle in developing countries. After estimating energy demand by fuel woods in 2000 and 2030, we investigated the harvested land use scenarios including the substitution of grass type biomass for fuel wood energy consumption. The objective regions were 51 developing countries where forest depletion besides wildfires has been proceeding between 1990 and 2000. On the scenario including crop rotation in the permanent crop land and grass plantation in the arable land, we could confirm the possibility of substitution for fuel wood energy consumption accompanying forest depletion. Furthermore, utmost 18% reduction potential of carbon dioxide emission derived by fossil fuels from developing countries in 2030 was shown by investigating the substitution for fossil fuels consumption by utilizing surplus grass biomass energy after substituting for fuel woods.
