Analysis of carbon flows by biomass use in a regional scale

为了探讨合适的生物质利用方案，对生物质资源的物质流进行了分析。以木材生物量为研究对象，建立了包含森林碳储量的模拟模型，分析了日本不同政策方案的CO_2减排潜力。对于农业生物质，在关东地区和越南南部对其有效利用的几种技术选择进行了评估。在此基础上，讨论了生物燃料生产和利用对环境和社会的影响，并提出了生物燃料可持续利用的标准。

In order to discuss an appropriate scenario for biomass use, material flows of biomass resources were analyzed. For wooden biomass, a simulation model which includes carbon stock in forest was developed, then CO_2 reduction potential in several policy options were analyzed in Japan. For agricultural biomass, several technological options of its effective use were evaluated in Kanto area, and southern Vietnam. Furthermore, environmental and social impacts in bio-fuel production and utilization were discussed, and a set of criteria for sustainable bio-fuel utilization were proposed.