Abstract
In recent years, global warming caused by increasing greenhouse gases has led to international problems. In this study we analyzed documents and articles such as a report on clean energy plan, inter-industry relation table, statistics on energy and economy, comprehensive energy statistics, investigative report on agriculture production cost and so on, and estimated energy consumption and its resultant CO2 emission in agriculture. The results of this study are summarized as follows: (1) The total Japan's energy consumption in agriculture and forestry in 1991 was 7 x 106 t and the resultant CO2 emission was estimated at 22 x 106 t. (2) The consumption of petrochemical products and electoricity was 7.894 x 106 KL and 386,870,000 kWh, respectively. Resultant CO2 emission was found to be 23.3 x 106 t. (3) The CO2 emission by the production of agricultural materials such as fertilizer, agricultural chemicals and films was estimated to be 4 x 106 t. (4) The study revealed that 7,228 kg of CO2 per 10a was dischaged from such facilities as greenhouses and hothouses to control their air temperature. (5) CO2 emission (kg/10a) by agricultural machine operation was 70 for rice, 30 for wheat, 42 for rye, 36 for barley, 75-101 for soy bean, 39-49 for rape, respectively.
