書誌事項
- タイトル別名
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- Estimation of Nitrate Removal on Basis of Chains of Tea Field-Reservoir-Paddy Field-Canals
- 茶園-ため池-水田-水路系の連鎖による窒素除去量の推定
- チャエン タメイケ スイデン スイロケイ ノ レンサ ニ ヨル チッソ ジョキョリョウ ノ スイテイ
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The aim of this study was to estimate the nitrate removal rate in paddy fields, which were irrigated from a reservoir. The reservoir stores the water that inflows from four small rivers to which spring water from tea fields drains. The study area was Makinohara, in Shizuoka, Japan, which is a tea field zone. The water quality and discharge were measured from June 2001 to May 2003. The results are as follows: The annual average concentrations of NO3-N were 25.5 mg·l-1 for inflow water, 21.3 mg·l-1 for irrigated water from reservoirs, and 4.7 mg·l-1 for outflow water from the paddy fields. The annual runoff load of NO3-N from the tea field zone was estimated to be 260 kg·ha-1·y-1. The average NO3-N removal rate during the irrigation period was 0.39 g·m-2·d-1 in the paddy fields. The NO3-N removal load in the paddy fields was about 3 times the runoff load from the tea field zones. It was estimated that the removed nitrate load, which ran off from the tea field, could be greatly decreased by the irrigation of the paddy fields all season.
収録刊行物
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- 水環境学会誌
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水環境学会誌 29 (1), 15-20, 2006
公益社団法人 日本水環境学会
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詳細情報 詳細情報について
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- CRID
- 1390001205080892032
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- NII論文ID
- 10017154276
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- NII書誌ID
- AN10372439
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- COI
- 1:CAS:528:DC%2BD28XhtFWrtrg%3D
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- ISSN
- 18813690
- 09168958
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- NDL書誌ID
- 7790526
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可
