-
- 小関 恭
- 宮城県農業短期大学
-
- 佐々木 長市
- 弘前大学農学生命科学部
-
- PONGPATTANASIRI Sukthai
- Faculty of Agriculture and Life Science, Hirosaki University
-
- 諸泉 利嗣
- 岡山大学環境理工学部
書誌事項
- タイトル別名
-
- Changes in the Concentrations of Oxygen and Carbon Dioxide in a Gravel and Sand Subsoil Layer of a Paddy Field
- サレキスイデン シンドソウ ニ オケル サンソ オヨビ 2サンカタンソ ノウド ノ ヘンドウ
この論文をさがす
抄録
In the paddy field with gravel and sand subsoil that was low groundwater level, the plane changes in concentrations of oxygen and carbon dioxide were investigated over 2 years. The soil air was sampled from the subsoil in about 50cm depth at 1, 5, 10 and 15m from the levee to the center. Those points situated one line and three lines were investigated in this paddy field.<BR>Following results were obtained. Those oxygen concentrations at each point gradually decreased in irrigation period and the lowest concentration were observed in early September. In non-irrigation period, those concentrations increased, and eventually reached the atomospheric level. On the other hand, the carbon dioxide concentrations in the subsoil increased gradually in irrigation period and the highest concentration were observed in early September. In non-irrigation period, those concentrations decreased. This tendency of changes in carbon dioxide was in inverse relation to that in oxygen. These annual changes in concentrations of two parameters were recognized. As the distance from the levee increased, the oxygen concentration tend to be lower and those carbon dioxide concentrations higher. The total concentrations of oxygen and carbon dioxide became nearly equal to 21% at each sampling point.
収録刊行物
-
- 農業土木学会論文集
-
農業土木学会論文集 2004 (229), 15-22, 2004
社団法人 農業農村工学会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390282679518530560
-
- NII論文ID
- 130004348580
- 10012648493
-
- NII書誌ID
- AN00201203
-
- ISSN
- 18847234
- 03872335
-
- NDL書誌ID
- 6972722
-
- 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