A simulation study of merging a lifecycle impact assessment (LCIA) with an integrated assessment model (IAM)-an optimal economic growth via internalizing external costs by environmental impacts-

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  • TOKIMATSU Koji
    Research Center for Life Cycle Assessment, National Institute of Advanced Industrial Science and Technology (AIST)
  • ITSUBO Norihiro
    Research Center for Life Cycle Assessment, National Institute of Advanced Industrial Science and Technology (AIST) Faculty of Environmental and Information Studies, Musasi Institute of Technologies
  • KUROSAWA Atsushi
    Research and Development Division, The Institute of Applied Energy (IAE)
  • KOSUGI Takanobu
    College of Policy Science, Ritsumeikan University
  • Yagita Hiroshi
    Research Center for Life Cycle Assessment, National Institute of Advanced Industrial Science and Technology (AIST)
  • SAKAGAMI Masaji
    Department of Social & Information Sciences, Nihon Fukushi University

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Other Title
  • ライフサイクル影響評価と統合評価モデルを融合したシミュレーション分析
  • ライフサイクル エイキョウ ヒョウカ ト トウゴウ ヒョウカ モデル オ ユウゴウ シタ シミュレーション ブンセキ

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Abstract

We argued a new adaptation methodology with optimal economic growth via internalizing environmental external costs according to varieties of environmental impacts by merging bottomup LCIA with IAM. An endpoint type LCIA methodology based on Japanese environmental conditions, LIME (Lifecycle Impact assessment Method based on Endpoint modeling), provided evaluated marginal willingness-to-pay (MWTP) to protect environmental impacts of present-day in Japan by use of a conjoint analysis. We interpreted the LIME MWTP expressed environmental externalities, and reassessed MWTP parameters of the future and other world regions. The environmental external costs of global warming, acidification, land-use & land-use change (LU&LUC) are coupled with an integrated assessment framework of economic utility maximization model GRAPE (Global Relationship Assessment to Protect Environment). Simulation results indicated that approximately a half of external cost is from greenhouse gas emissions and the rest from LU&LUC. This fact implies that LU&LUC is of important comparable to global warming; and that internalizing external cost leads to forestry conservation and the departure from fossil fuel. his study is the world first trial of integrated assessment by merging LCIA of bottom-up approach with IAM.

Journal

  • ENVIRONMENTAL SCIENCE

    ENVIRONMENTAL SCIENCE 19 (1), 25-36, 2006

    SOCIETY OF ENVIRONMENTAL SCIENCE, JAPAN

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