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Income distribution, spatial heterogeneity, and time and space discounting

Research Project

Project/Area Number 16K16237
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Environmental policy and social systems
Research InstitutionNational Institute for Environmental Studies (2018)
Kyushu University (2016-2017)

Principal Investigator

Yamaguchi Rintaro  国立研究開発法人国立環境研究所, 社会環境システム研究センター, 主任研究員 (30557179)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2018: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords割引率 / 気候変動 / 所得分配 / 世代内衡平 / 費用便益分析 / 生態系サービス / 空間割引率 / 自然資本 / 世代間衡平 / 緩和 / 経済理論 / 経済政策
Outline of Final Research Achievements

Cost-benefit analysis of climate change policy involves discounting of consumption that arises in the future. However, the effect of intragenerational equity and spatial heterogeneity on intergenerational discounting has not been extensively discussed. In this study, first, intragenerational income distribution is studied in standard intergenerational Ramsey model to derive discounting. In theory, consumption discount rate is shown to be disaggregated into growth effect and intragenerational distribution effect. Numerical results indicate that, when environmental quality and population are also taken into account, proper discount rate could be lower than usually thought. Second, spatial discounting framework is constructed in line with welfare economic theory. In particular, spatial discounting of willingness to pay for ecosystem services is shown to be the difference of spatial consumption discounting and spatial discounting of ecosystem services with numerical examples.

Academic Significance and Societal Importance of the Research Achievements

近年、所得と富の不平等に対する関心が高まっている。これに対して、気候変動や生態系についての研究では、平均的な人々を想定してモデル化されることが多かった。本研究は、同じ世代に属する人々の所得や環境の質に格差があることが、世代間の割引率にどう影響するかを考察したものである。また空間割引率の枠組みは、やはり同じ世代内に属する人々の経済指標をどのように重みづけするかという議論に資する。今後、気候変動の影響によって、さまざまな格差が拡大する可能性もある中、このような世代内衡平性の影響を考慮し続けることが重要である。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (10 results)

All 2018 2017 2016

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Intergenerational discounting with intragenerational inequality in consumption and the environment2018

    • Author(s)
      Rintaro Yamaguchi
    • Journal Title

      Environmental and Resource Economics

      Volume: Forthcoming Issue: 4 Pages: 957-972

    • DOI

      10.1007/s10640-018-0282-4

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Wealth and population growth under dynamic average utilitarianism2018

    • Author(s)
      Rintaro Yamaguchi
    • Journal Title

      Environment and Development Economics

      Volume: 23 Issue: 1 Pages: 1-18

    • DOI

      10.1017/s1355770x17000274

    • NAID

      120006413981

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] New Financing for Sustainable Development The Case for NNP- or Inclusive Wealth-Linked Bonds2017

    • Author(s)
      Rintaro Yamaguchi and Shunsuke Managi
    • Journal Title

      The Journal of Environment & Development

      Volume: 印刷中 Issue: 2 Pages: 214-239

    • DOI

      10.1177/1070496516687344

    • NAID

      120005972901

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Journal Article] Measuring regional wealth and assessing sustainable development: a case study of a disaster-torn region in Japan2016

    • Author(s)
      Rintaro Yamaguchi, Masayuki Sato and Kazuhiro Ueta
    • Journal Title

      Social Indicators Research

      Volume: 未定 Issue: 1 Pages: 1-25

    • DOI

      10.1007/s11205-015-1106-3

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Presentation] Spatial discounting of ecosystem services2018

    • Author(s)
      Yamaguchi, R., Shah, P.
    • Organizer
      XX ANNUAL BIOECON CONFERENCE: Land-use, Agriculture and Biodiversity: Spatial and Temporal Issues
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 気候変動の割引率と政策形成2018

    • Author(s)
      山口臨太郎
    • Organizer
      第2回 環境経済学と政策形成のワークショップ
    • Related Report
      2018 Annual Research Report
  • [Presentation] Intergenerational discounting with intragenerational inequality in consumption and the environment2017

    • Author(s)
      Rintaro Yamaguchi
    • Organizer
      23rd Annual Conference of the European Association of Environmental and Resource Economists (EAERE)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 持続可能性と空間的拡散2017

    • Author(s)
      山口臨太郎
    • Organizer
      環境経済・政策学会(SEEPS)2017年大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Corruption, institutions and sustainable development: theory and evidence from inclusive wealth2017

    • Author(s)
      Rintaro Yamaguchi et al.
    • Organizer
      92nd Annual Conference of Western Economic Association International (WEAI)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Intergenerational discounting with intragenerational inequality in consumption and the environment2016

    • Author(s)
      Rintaro Yamaguchi
    • Organizer
      2016 International Energy Workshop
    • Place of Presentation
      University College Cork (UCC) in Cork, Ireland
    • Year and Date
      2016-06-01
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2020-03-30  

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