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Greenhouse gas emissions and LCA estimation from the cropping system using biodegradable plastic mulch films

Research Project

Project/Area Number 16K00578
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Environmental impact assessment
Research InstitutionNational Agriculture and Food Research Organization

Principal Investigator

Kishimoto-Mo Ayaka  国立研究開発法人農業・食品産業技術総合研究機構, 農業環境変動研究センター, 上級研究員 (60334033)

Co-Investigator(Kenkyū-buntansha) 大浦 典子  国立研究開発法人農業・食品産業技術総合研究機構, 農業環境変動研究センター, 室長・調整監・技術支援センター長等 (50354022)
Research Collaborator Ohkoshi Satoru  福島県農業総合センター, 浜地域研究所, 主任研究員 (30590153)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords生分解性マルチ / 温室効果ガス / LCA評価 / 一酸化二窒素 / 分解特性評価 / 環境保全型農業 / 省力化 / 影響評価手法 / 環境配慮型農業 / 生分解性プラスチックマルチ
Outline of Final Research Achievements

Plastic materials are widely used in agricultural applications to achieve food security for the growing world population. The use of biodegradable instead of non-biodegradable polymers in agriculture may promote to reduce plastic accumulation in the environment. This study was aimed to estimate greenhouse gas emissions from the cropping system using soil-biodegradable plastic (BP) mulching film, and estimate the total LCA from the staring and end use in a cropping system.
We developed measuring systems based on closed-chamber method to estimate greenhouse gas fluxes (CO2/N2O/CH4) from the cropping system using BP films in both laboratory and field scales. N2O emission and CH4 uptake were not significantly differed from the soil with and without weathering BP film plowing. LCA from the starting and end use in a vegetable field including GHG emissions from the cropping system using BP film, was much smaller comparing with the non-BP film system due to the post-waste processes.

Academic Significance and Societal Importance of the Research Achievements

本研究は生分解性マルチすき込みが非CO2温室効果ガス(N2O排出とメタン吸収)フラックスに影響を及ぼさないことを繰り返し確認した。これは生分解性マルチを用いた栽培体系におけるCO2負荷量のLCA評価のための新しい知見であった。
生分解性マルチの値段はポリマルチなどより3倍も高く、畑作業で大量に消費される非分解性ポリマルチからの切り替えにはインセンティブが必要である。そのため、本研究でのLCA評価から明らかにした生分解性マルチを用いた栽培体系は非生分解性ポリマルチを用いた栽培体系よりもCO2負荷量が少ないことが、生分解性マルチの普及に資する環境負荷の少ない付加価値を加えられた。

Report

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

    (3 results)

All 2019 2016

All Presentation (3 results) (of which Int'l Joint Research: 2 results)

  • [Presentation] Laboratory test methods for biodegradability of biodegradable plastic mulch films in cultivated soils by CO2 measurements2019

    • Author(s)
      Kishimoto-Mo A., Yamamoto-Tamura K., Hoshino Y. T., Sameshima-Yamashita Y., Kunioka M. & Kitamoto H.
    • Organizer
      Soil Science Society of America 2019 International Soils Meeting (Jan. 6-9, 2019, San Diego, USA)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Estimating N2O emissions from Japanese agricultural soils at a country scale using an empirical modeling approach2016

    • Author(s)
      Kishimoto A., Shirato Y., Mishima S.
    • Organizer
      ASA, CSSA, & SSSA International Annual Meeting 2016
    • Place of Presentation
      Phoenix, AZ, USA
    • Year and Date
      2016-11-06
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] マルチを利用した二作一回施肥がスイートコーン・キャベツ栽培ほ場からのN2O発生に及ぼす影響(第2報)2016

    • Author(s)
      馬場久美子・岸本 文紅・大浦 典子・加藤知美・長坂克彦
    • Organizer
      日本土壌肥料学会関東支部栃木大会
    • Place of Presentation
      宇都宮大学峰キャンパス(栃木県宇都宮市)
    • Related Report
      2016 Research-status Report

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

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