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Groundwater geochemistry of a nitrate-contaminated agricultural site
http://hdl.handle.net/10069/37001
http://hdl.handle.net/10069/370013c1b93fa-9502-4f47-8fa2-84f10a1cc9bf
名前 / ファイル | ライセンス | アクション |
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EES75_1145.pdf (2.2 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-09-01 | |||||
タイトル | ||||||
タイトル | Groundwater geochemistry of a nitrate-contaminated agricultural site | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Groundwater | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Nitrate contamination | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Vertical profile | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Nitrate fluctuation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Principal component analysis | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Amano, Hiroki
× Amano, Hiroki× Nakagawa, Kei× Berndtsson, Ronny |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Groundwater samples were collected from several soil depths down to 50 m below soil surface to investigate vertical profiles of NO3? and hydrogeochemical characteristics of the experimental site. The experimental site is located in the Shimabara City, Nagasaki, Japan, where nitrate contamination in groundwater is severe due to intensive agricultural production. A transition zone regarding dissolved ions was found between specific depths caused by differences in the permeability of soil layers. Though NO3? concentration decreased significantly in the transition zone, the entire soil depth exceeded permissible levels (50 mg L?1) for drinking purposes. Comparing the temporal NO3? fluctuation above the transition zone with that of the below, distinct fluctuations were observed depending on sampling campaign. High rainfall amounts typically lead to initial decrease in NO3? concentration for the shallow groundwater. After some time, however, increase in NO3? concentration occurred due to leaching of accumulated NO3? in the soil matrix. This indicated that temporal NO3? fluctuation is mainly controlled by natural impact and occurring crop system. Results of principal component analysis suggested that application of chemical fertilizers [(NH4)2SO4, NH4NO3, and KCl], dissolution of minerals (feldspar, calcite, and dolomite), and ion exchange are the predominant factors resulting in the observed vertical groundwater chemistry. The relative magnitude of these three principal component scores changed across the transition zone. Below the transition zone, groundwater geochemistry reflected application of NH4NO3 and KCl fertilizer and dissolution of albite and orthoclase. | |||||
書誌情報 |
Environmental Earth Sciences 巻 75, 号 15, p. 1145, 発行日 2016-08 |
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出版者 | ||||||
出版者 | Springer-Verlag | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 18666280 | |||||
EISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 18666299 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1007/s12665-016-5968-8 | |||||
権利 | ||||||
権利情報 | c Springer-Verlag Berlin Heidelberg 2016 | |||||
権利 | ||||||
権利情報 | The final publication is available at link.springer.com | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Environmental Earth Sciences, 75(15), art. no.1145; 2016 |