A Study of Economic Effect Analysis of Capital Investment in Rural Living Area Infrastructure Improvement Projects and Serious Consideration of Life sphere in Rural Area Infrastructure

本研究的目的是为了弄清农村生活区改善项目的投资对日本的农业和非农业产业、国民经济和消费者价格产生了什么影响;建立一个有效的模拟器，能够从定性和定量的角度模拟尽可能多的多方面影响，包括对生活区环境和地方活力的影响;总之，以提高农村生活水平为目的的生活区基础设施的改善，控制了土地无序蔓延现象，增加了耕地面积和农作物生产面积，对农业投资、生产和分配起到了积极的促进作用。关于非农业部门，有人澄清说，住房和自然环境的改善导致了新的住房需求的产生、建筑业和真实的房地产业的振兴以及第三产业和消费需求的刺激。特别是，舒适和便利等因素对土地和住房供应产生了巨大的影响。此外，以下观点被认为是与农村生活区基础设施改善项目有关的投资。也就是说，有机自然资源的农业废物堆肥措施从（协同努力改善区域环境）和社会效益评估的角度来看具有经济合理性。

The objectives of this study were to clarify what effects investment in a rural living area improvement project had on Japan's agriculture and non-agriculture industries, the national economy and consumer prices ; to build an effective simulator capable of modeling as many multifaceted effects as possible from both qualitative and quantitative perspectives including effects on living area environments and local vitalization ; and to estimate detailed economic effects brought about by the project.In summary, improvement of living area infrastructure for the purpose of increasing the standard of rural living controlled the sprawl phenomenon, increased the cultivated and crop production area and promoted agricultural investment, production and distribution positively. As for the non-agriculture sector, it was clarified that the creation of new housing demand, vitalization of the construction and real estate industries and stimulation of tertiary industry and consumption demand were induced by improved housing and the natural environment. Particularly, factors such as amenities and convenience exercised a characteristically large effect on land and housing supply.Moreover, The following point was accepted as investment relevant to rural living area infrastructure improvement projects. That is, the measure of farm waste composting of the organic nature resources has economical rationality from a viewpoint of (Collaborative Efforts to Improve the Regional Environment) and social benefits evaluation.