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

本研究旨在通过以下三个主要问题来确定在城市边缘景观中实现本地规模的有机材料回收系统需要讨论的问题。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基于可持续农业系统，构建了新的城乡混交区农田评价框架。该框架的目的是建立一个材料循环系统，利用房屋的厨房垃圾来施肥附近的农田。然后将该框架应用于东京大都会国分寺市，这是一个具有代表性的城乡混合地区。该框架表明，农场获得足够堆肥的程度是农场规模和散布率的一个因素。农场越小，越分散，堆肥的充分性就越大。与此同时，有足够堆肥的小规模农田的农产品更能满足那些提供厨余垃圾的家庭的需求。在城市边缘地带城乡土地利用循环系统中消费者和农民的有效互动建立有效循环系统的努力在促进消费者和农民群体之间的合作方面遇到了困难。这是因为两组人之间缺乏信任。例如，农民不相信不知名的消费者能制造出高质量的堆肥。本研究的目的是评估农民和消费者相互合作的意愿。这将使决策者能够了解如何使回收系统更有效。我们认为，地点在建立信任方面发挥着重要作用。总的来说，结果显示了靠近农民活动的位置的重要性。位于城市边缘地带的中山林地已经失去了维持的经济可行性，因此被遗弃了几十年。然而，近年来对生物质作为可再生资源的关注使人们重新关注中山，中山可能成为生物质不可缺少的来源之一。本研究的目的是根据几种维护方案估计中山所提供的潜在生物量。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，这些生物质可以转化为1300至5200户家庭的电力。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