2021 Fiscal Year Final Research Report
Development of measurement methods for the circular economy focusing on the value, efficiency, and environmental impact of natural resource use
| Project/Area Number |
19H04329
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 64050:Sound material-cycle social systems-related
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| Research Institution | Ritsumeikan University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
谷川 寛樹 名古屋大学, 環境学研究科, 教授 (90304188)
山末 英嗣 立命館大学, 理工学部, 教授 (90324673)
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | 資源効率 / 環境効率 / シェアリング / リマニュファクチャリング / 関与物質総量 |
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| Outline of Final Research Achievements |
The new concepts and initiatives of the circular economy cannot be measured by conventional indicators such as the recycling rate. We developed a method for measuring the value of natural resources created through their extraction to final disposal, a method for individually measuring various efforts to improve resource efficiency, and a method for measuring the effect of reducing the environmental impact by reducing the use of natural resources. Specifically, we developed a method for estimating the value of natural resource generated over its "lifecycles" by using a supply-driven input-output model, and showed some application examples. In addition, we have developed individual measurement methods for various efforts based on the structural decomposition of resource efficiency, and have shown examples of their application. We also estimated the effect of reducing environmental impact for some efforts using Total Material Requirement.
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| Free Research Field |
環境システム分析、資源・廃棄物管理
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| Academic Significance and Societal Importance of the Research Achievements |
1単位の天然資源が採取され最終処分されるまでに生み出す価値を計測するという考え方は本研究のオリジナルであり、「天然資源の価値を最大限に引き出す」という循環経済の方向性を適切に表現する指標として、今後の活用が期待される。また、循環経済に向けて様々な取組がある中、本研究が分類・提案する各取組の計測指標も、そうした取組のモニタリング指標として活用することができる。さらに、本研究で改善を行った関与物質総量については、様々な素材の係数をウェブサイトで公開しており、資源利用に伴う環境影響の評価指標の1つとしての活用が期待される。
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