ライフサイクルCO2評価に基づいた都市環境の整備計画に関する一考察

概要

論文の詳細を見る
Development of a low-carbon city is one alternative being considered to address global warming. In addition, evaluation of the effectiveness of life cycle CO2 (hereafter, LCCO2) in reducing CO2 emissions is currently being examined with interest in a number of sectors. In consideration of the current interest in these areas, this study sets out to discuss a method for LCCO2 evaluation in urban areas, and considers means for planning and design of urban environments and landscape planting based on LCCO2 evaluation. More specifically, several urban models differing in terms of urban environment planning and design (such as land use and land cover on landscape planting) were considered and evaluated in terms of LCCO2. The following results were observed: 1) the LCCO2 evaluation method utilized in this study was shown to be applicable to various urban models; 2) under basic conditions the urban model demonstrated that LCCO2 within the non-built coverage area was estimated to be about 158.1t-C/ha; 3) where the urban model's tree crown cover area was expanded to reduce the amount of LCCO2, the maximum reduction rate of LCCO2 in the non-built cover area was estimated to be about 28.8%; and 4) where land use in the urban model was changed to reduce the amount of LCCO2, the rate of LCCO2 reduction in the non-built coverage area ranged from an estimated 83.0% to 117.0%.