耕盤層を有する土壌中のCO<SUB>2</SUB>, O<SUB>2</SUB>ガス挙動に関する研究

• 藤川 智紀

  鳥取大学乾燥地研究センター

• 宮崎 毅

  東京大学大学院農学生命科学研究科

• 井本 博美

  東京大学大学院農学生命科学研究科

書誌事項

タイトル別名

• Study on behavior of CO<SUB>2</SUB> and O<SUB>2</SUB> gas in soil with a hard pan

抄録

Gas concentration in soil air is different from that in atmosphere, because it is affected by activity of microorganisms and gas diffusion. In our previous study, it was shown that the gas concentrations varied at a hard pan in the field, but the mechanism of the hard pan on gas behavior was not clearly elucidated. In this study, we evaluated the effects of a hard pan on CO² and O² gas behavior in soil in column experiments and in simulations. In soil column, it was found that, below the hard pan, CO² concentration was higher and O² concentration was lower than above it. Both CO² and O² concentration distributions in the column were similar to those in a field with the hard pan. Simulations with measured gas concentration of column experiment suggested that the generation of CO² gas from microorganisms at the hard pan might be larger, and also, prevention of gas movement by water, and soil particles above the hard pan or large gas flux through the top layer might have kept CO² concentration low above the hard pan.

収録刊行物

• 農業土木学会論文集

  農業土木学会論文集 2003 (225), 397-404, 2003

  社団法人 農業農村工学会

キーワード

• 土壌ガス
• カラム実験
• シミュレーション
• 微生物活性
• ガス拡散
• 耕盤層

詳細情報

• CRID: 1390282679520360064
• NII論文ID: 130004348518
• DOI: 10.11408/jsidre1965.2003.397
• ISSN: 18847234
• ISSN: 03872335
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可