長野県北部におけるスギと長野県東部におけるカラマツのCO_2排出量原単位及び木造住宅におけるCO_2排出量の算出

摘要

We researched and calculated the percentage of wood that is wasted at the forest and the lumber mill. We measured the energy used at these two locations and the lumber market. We also calculated the amount of CO_2 emissions from energy consumption at these three locations and in the transporting of the wood. The following results were obtained.rn1) The embodied CO_2 of northern Nagano Japanese cedar and eastern Nagano Japanese larch were 241.37kg-CO_2/m~3 and 254.53kg-CO_2/m3 respectively.rn2) The CO_2 emissions from the construction of the house that was made from local wood could reduce CO_2 emissions by 39%, compared to the construction of the house that was made from imported wood.%本研究では地場産材を使用した住宅における木材のライフサイクrnルアセスメントに関する基礎調査を行い、以下の知見が得られた。rn1）北信スギの単位物量当りのCO_2排出量は241.41kg-CO_2/m~3となrnり、東信カラマツの単位物量当りのCO_2排州量は254.53kg-CO_2/m~3rnとなった。