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Effect of Bypass-Flow on Leaching of Salts in a Cracking Soil in the Nile Delta
https://repository.lib.tottori-u.ac.jp/records/7394
https://repository.lib.tottori-u.ac.jp/records/739430828ac5-d0b0-4b02-b2c7-b29e240bf034
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
wtr13(7)_w13070993.pdf (4.8 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2022-09-08 | |||||
| タイトル | ||||||
| タイトル | Effect of Bypass-Flow on Leaching of Salts in a Cracking Soil in the Nile Delta | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題 | salinity stress | |||||
| キーワード | ||||||
| 主題 | solute transport | |||||
| キーワード | ||||||
| 主題 | preferential flow | |||||
| キーワード | ||||||
| 主題 | drainage | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題 | salinity stress | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題 | solute transport | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題 | preferential flow | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題 | drainage | |||||
| 資源タイプ | ||||||
| 資源タイプ | journal article | |||||
| 著者 |
藤巻, 晴行
× 藤巻, 晴行× Abd, El Baki Hassan Mohamed Fahmy |
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| 著者所属（英） | ||||||
| 言語 | en | |||||
| 値 | Arid Land Research Center, Tottori University | |||||
| 著者所属（英） | ||||||
| 言語 | en | |||||
| 値 | Arid Land Research Center, Tottori University | |||||
| 抄録 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | Salinity is a major threat to the sustainability of irrigated agriculture in arid and semi-arid regions. Leaching is the primary measure for removing excess salts from the root zone, but not all water applied to the soil surface contributes to the removal of salts. In clayey soils, bypass flow along cracks can occur without being mixed with saline pore water in the matrix. To present a field dataset to quantitatively evaluate the contribution of bypass flow to the leaching of salts, soil sampling and monitoring of groundwater and discharge from a tile drain were carried out in farmland having a cracking soil in the Nile Delta. The electrical conductivities of 1:2 extracts were measured to evaluate the salinity of the soil. The first evidence for the occurrence of significant bypass flow through cracks was the salinity of the pore water, which was nearly triple that of the shallow groundwater and outflow from drainage. Second, the difference in root zone salinity before and after paddy rice cultivation was not significant. Third, the gradient of the groundwater table was very small. in spite of the low saturated hydraulic conductivity. Fourth, the salinity of the outflow from the tile drain dropped just after irrigation or rain. These results indicated that bypass flow through cracks played a significant role in the drainage process in the soil, and that nearly half of the water bypasses through cracks in the field with a cracking soil. | |||||
| 書誌情報 |
WATER en : WATER 巻 13, 号 7, p. 993, 発行日 2021-04 |
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| 出版者 | ||||||
| 出版者 | MDPI | |||||
| DOI | ||||||
| 関連タイプ | isIdenticalTo | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.3390/w13070993 | |||||
| 権利 | ||||||
| 権利情報 | (C) 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). | |||||
| 情報源 | ||||||
| 関連名称 | Fujimaki Haruyuki, Abd El Baki Hassan Mohamed Fahmy. Effect of Bypass-Flow on Leaching of Salts in a Cracking Soil in the Nile Delta. WATER. 2021. 13(7). doi:10.3390/w13070993 | |||||
| 関連サイト | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.3390/w13070993 | |||||
| 関連名称 | https://doi.org/10.3390/w13070993 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| EISSN | ||||||
| 値 | 20734441 | |||||
