食料生産との競合を考慮した地域エネルギーシミュレータの提案  [in Japanese] Proposal of Rural Energy Simulator Considering Competitive Production between Food and Renewable Energy  [in Japanese]

Access this Article

Search this Article

Author(s)

Abstract

地域空間における食料とバイオマスエネルギーを含む再生可能エネルギーの生産競合シナリオの解析を行うために,Microsoft Excel®,Microsoft Visio®のVBAを用いて,地域エネルギーシミュレータ(以下「シミュレータ」)を提案した.シミュレータは,制約条件を農地面積,食料需要,飼料需要,エネルギー需要とし,目的関数を再生可能エネルギーの最大化,あるいは作付面積の最小化とすることにより,シナリオの最適解を,線形計画法にもとづいて求めることができる.<br>バイオマス生産の試算に関する過去の研究成果との比較のなかで,シミュレータの評価を行った.過去の試算に用いたデータや制約条件を考慮すれば,シミュレータを用いることによって,栃木県レベルの地域空間における農業の作付体系を,十分な精度で同定できることが明らかとなった.さらに,「農業生産空間の有効活用が進むと,食料・エネルギーの生産量が増加し,食料・エネルギーの自給社会の形成が促進される」という方向性のもとで,シナリオを作成し,シミュレータによる試算と評価を行った.シミュレータは,エネルギー変換効率の高い作物の作付体系を作付パターンの自動生成プログラムによって,数多くの組合せの中から自動的に選択した.また,作付面積の最小化を行うと同時に,耕地利用率を最大化し,食料生産の自給とバイオマスエネルギー生産の最大化を行う解を提示した.<br>

A Rural Energy Simulator was created using Microsoft Excel® and Microsoft Visio® with Visual Basic for Applications (VBA) in order to analyze some competitive production scenarios between food and renewable energy in rural areas. This linear programming simulator is able to derive an optimum solution from objective functions such as maximizing renewable energy production, or minimizing cropping surface area in rural areas with constraint conditions such as farmland surface area, food demand, feed demand, and energy demand.<br>The simulator was evaluated by comparing trial calculated data published in previous research papers on the estimation of biomass production. It was clarified that cropping systems in the rural agricultural area of Tochigi prefecture can be identified with enough accuracy for discussion by using the simulator, considering the real data and restricted conditions used in the previous research papers. Furthermore, some trial calculations for new scenarios were executed by using the simulator from the viewpoint of increasing the amount of production in food and energy along with effective use of rural agricultural areas in order to promote the construction of a self-sufficient society. The simulator automatically selected the best cropping system for a high energy conversion efficiency from many cropping combination patterns. The simulator identified some solutions for self-sufficiency in food in rural area with maximized biomass energy production and farmland utilization ratio, and minimized cropping surface area.<br>

Journal

  • Agricultural Information Research

    Agricultural Information Research 16(3), 158-170, 2007

    Japanese Society of Agricultural Informatics

Codes

  • NII Article ID (NAID)
    130000116446
  • NII NACSIS-CAT ID (NCID)
    AN10481161
  • Text Lang
    JPN
  • ISSN
    0916-9482
  • NDL Article ID
    9403365
  • NDL Source Classification
    ZR6(科学技術--農林水産)
  • NDL Call No.
    Z18-3538
  • Data Source
    NDL  J-STAGE 
Page Top