代替法による農地の窒素除去/負荷機能の経済評価の試み Economic Valuation of Nitrogen Removal/Load of Cultivated Land by a New Replacement Cost Method

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Agriculture is multifunctional, and the value of each function should be expressed in a form that is easy for anyone to understand. One function, for example, is water purification, and recently much effort has been expended to quantify this function. We proposed a new replacement cost method to perform an economic valuation of the nitrogen (N) removal function of paddy fields and of the N load function of upland fields, as well as economically valuated cultivated lands in Japan. The N removal function was valued at approximately 0.3 JPY·m<sup>-2</sup>·d<sup>-1</sup> when compared with the maintenance and depreciation cost of water quality improvement facilities. Upland fields have a negative economic value of approximately 0.08 JPY·m<sup>-2</sup>·d<sup>-1</sup>. However, paddy fields function effectively in N removal only when irrigation water is strongly contaminated with N. Consequently, 90% and more of the area used for paddy fields do not function in N removal. Based on these valuations, cultivated lands including paddy fields and upland fields could be annually valuated at minus 780×10<sup>9</sup> JPY Japan-wide.

収録刊行物

  • 水環境学会誌 = Journal of Japan Society on Water Environment

    水環境学会誌 = Journal of Japan Society on Water Environment 27(7), 491-494, 2004-07-10

    公益社団法人 日本水環境学会

参考文献:  36件中 1-36件 を表示

被引用文献:  4件中 1-4件 を表示

各種コード

  • NII論文ID(NAID)
    10013275140
  • NII書誌ID(NCID)
    AN10372439
  • 本文言語コード
    JPN
  • 資料種別
    NOT
  • ISSN
    09168958
  • NDL 記事登録ID
    7027830
  • NDL 雑誌分類
    ZN5(科学技術--建設工学・建設業--都市工学・衛生工学)
  • NDL 請求記号
    Z16-1045
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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