A Study on local-scaled recycling systems of organic materials in urban fringe landscapes

本研究旨在通过对以下三个主要问题的研究，找出在城市边缘景观中实现局部尺度有机物质循环系统需要讨论的问题。1.城市边缘景观中城乡土地利用之间的小尺度物质循环系统建立了一个新的城乡交错区农田评价框架，以实现可持续农业系统。该框架的目的是建立一个物质流通系统，利用家庭厨房垃圾为附近的农田施肥。该框架随后被应用于东京都的Kokubunji市，这是一个具有代表性的城乡混合区。该框架表明，农场可获得足够堆肥的程度是农场规模及其散播率的一个因素。农场越小，越分散，堆肥的充分性就越大。同时，具有足够复合…的小规模农田的农产品2.城市边缘景观城乡土地利用循环利用系统中消费者和农民的有效互动试图建立有效的循环利用系统，但在促进消费者和农民群体之间的合作方面遇到了困难。这是因为两个群体之间缺乏信任。例如，农民不信任不知名的消费者来制作高质量的堆肥。这项研究的目的是评估农民和消费者相互合作的意愿。这将使政策制定者了解如何使回收系统更加有效。我们认为，地理位置在建立信任方面发挥着重要作用。3.城市边缘景观最佳维护方案以提高生物量生产位于城市边缘地区的沙山林地已经失去了其经济可行性，因此几十年来一直处于废弃状态。然而，最近对生物质作为一种替代可再生资源的关注重新引起了公众对沙山的关注，它可能成为生物质不可缺少的来源之一。这项研究的目的是根据几个维护方案估计沙山提供的潜在生物量。该研究估计，如果进行适当的维护，每年将提供1.22吨/公顷至5.22吨/公顷的生物质，这些生物质可转化为1300至5200户家庭的电力。较少

This study aimed to identify issues to be discussed to realize local-scaled recycling systems of organic materials in urban fringe landscapes by examining three major issues as follows.1.Small-scaled material cyclic system between urban and rural land uses in urban fringe landscapesA novel evaluation framework of farmlands in a rural-urban mixed area was developed towards a sustainable agricultural system. The object of the framework was to establish a material circulation system that utilizes kitchen waste from houses to fertilize nearby farmlands. The framework was then applied to Kokubunji City in the Metropolis of Tokyo, a representative rural-urban mixed area. The framework illustrated that the degree to which farms may obtain sufficient compost is a factor of the size of the farms and their interspersing rate. The smaller the farms and the more interspersed they are, the greater the sufficiency of compost is. Meanwhile, farm products in small-scale farmlands with sufficient compo … More st satisfy the demand of those households providing kitchen waste.2.Effective interactions of consumers and farmers in a recycling system between urban and rural land uses in urban fringe landscapesAttempts to create effective recycling systems have encountered difficulties in fostering cooperation between groups of consumers and farmers. This is because of a lack of trust between both groups. For example, farmers do not trust unknown consumers to make good-quality compost. The objective of this research is to assess how willingly farmers and consumers cooperate with each other. This will enable policy-makers to understand how a recycling system can be made more effective. We argue that location has an important role to play in building trust. Overall the results show the importance of locating close to farmer's activity.3.Optimum maintenance schemes of satoyama in urban fringe landscapes to enhance biomass productionSatoyama woodlands located in urban fringe areas have lost their economic viability to be maintained and thus been abandoned for decades. However, recent attention on the biomass as an alternative renewable resource restored public attentions on satoyama, which may become one of indispensable sources of biomass. The aim of this study is to estimate the potential amount of biomass provided by satoyama according to several maintenance schemes. The study estimated that 1.22t/ha to 5.22t/ha of biomass, which can be transformed into electric power for 1,300 to 5,200 households, will be provided annually if an appropriate maintenance has been conducted. Less