数値解析に基づく土壌中水分再分布のモデル化

• 陸 旻皎

  長岡技術科学大学 重慶交通大学

• 広田 洸平

  エヌシーイー株式会社

書誌事項

タイトル別名

• MODELING REDISTRIBUTION OF SOIL MOISTURE BASED ON RESULTS OF NUMERICAL ANALYSIS
• スウチ カイセキ ニ モトズク ドジョウ チュウスイ ブン サイブンプ ノ モデルカ

抄録

Soil moisture is one of most important hydrological variables. Its redistribution have significant effects on evaporation, infiltration and groundwater recharge. Recently, its impacts on climate system is widely recognized. High non-linearity of Richards' equation makes its practical applications very difficult. Many soil moistue accounting hydrological models or land surface schemes (LSSs) take soil moisture into account conceptually as an index of wetness. Even Richards' equation based LSSs, used and evaluated in the global soil wetness project (GSWP) and/or the atmospheric model intercomparison project (AMIP), have only several soil layers. In order to develop a model to represent soil moisture redistribution in vertical direction for a better soil moisture accounting scheme, a high resolution numerical model solving vertical 1D Richards' equation is developed and applied to 9 soils in this study. By analyzing the soil moisture movement derived, two fomulae are proposed with parameters estimated from soil parameters. It is shown that these fomulae represented the behavior of soil water in soil column and at the surface fairly well.

収録刊行物

• 土木学会論文集Ｂ１（水工学）

  土木学会論文集Ｂ１（水工学） 70 (4), I_1099-I_1104, 2014

  公益社団法人 土木学会

キーワード

• 土壌水分再分布
• リチャーズ方程式
• 懸垂水分量
• 土壌水分欠損量
• 数値解析

詳細情報

• CRID: 1390282680329720832
• NII論文ID: 130005070255
• NII書誌ID: AN10426673
• ISSN: 18808751
• ISSN: 2185467X
• ISSN: 09167374
• DOI: 10.2208/jscejhe.70.i_1099
• NDL書誌ID: 025434528
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025434528
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可