水田潅漑がなされている小集水域の<I>L-Q</I>式の問題点と期別区分による改善

• 中曽根 英雄

  茨城大学農学部

• 黒田 久雄

  茨城大学農学部

• 茂木 真司

  茨城大学大学院農学研究科

書誌事項

タイトル別名

• Issues and its Improvement of <I>L-Q</I> Equation for Catchment Area with Seasonal Paddy Field Irrigation
• スイデン カンガイ ガ ナサレテ イル ショウ シュウスイイキ ノ L-Qシキ

抄録

When new catch basin is constructed in a polder, environmental impact assessment is essentially required for water quality preservation. To perform the environmental impact assessment, we must assess future water quality which is estimated by an ecosystem model in the catch basin. In the ecosystem model, pollutant loads of runoff from the catchment area are calculated by using the data collected from the catchment area. An L-Q equation is widely used for such purpose. The L-Q equation is very simple, but there is a problem that accuracy is not fair in thecertain case. This problem is particularly remarkable where irrigation water is taken from outside of the catchment area. Research concerned with this issue is lacking. Therefore, we select a catchment area where paddy field irrigation is performed, and conducted a survey for hydrology and water quality. The accuracy of L-Q equation is investigated and methods for its improvement is suggested. Authors verified that the accuracy of L-Q equation was improved by dividing the calculation term into two period ; irrigation and non-irrigation periods.

収録刊行物

• 農業土木学会論文集

  農業土木学会論文集 1997 (190), 517-522,a2, 1997

  社団法人 農業農村工学会

キーワード

• 閉鎖性水域
• 環境アセスメント
• <I>L-Q</I>式
• 集水域
• 水田潅漑

詳細情報

• CRID: 1390282679519849344
• NII論文ID: 10009295114
• NII論文ID: 10016224748
• NII書誌ID: AN00201203
• DOI: 10.11408/jsidre1965.1997.517
• ISSN: 18847234
• ISSN: 03872335
• NDL書誌ID: 4294269
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4294269
• データソース種別:
  • JaLC
  • NDL
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可