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Spatial trends of nitrate pollution and groundwater chemistry in Shimabara, Nagasaki, Japan
http://hdl.handle.net/10069/37000
http://hdl.handle.net/10069/37000da9eb856-11e0-45d8-a6f2-de2db7dd3b0a
名前 / ファイル | ライセンス | アクション |
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EES75_234.pdf (1.9 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-03-01 | |||||
タイトル | ||||||
タイトル | Spatial trends of nitrate pollution and groundwater chemistry in Shimabara, Nagasaki, Japan | |||||
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 | Water chemistry | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Nitrate pollution | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Principal component analysis | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Hierarchical cluster 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 |
Nakagawa, Kei
× Nakagawa, Kei× Amano, Hiroki× Asakura, Hiroshi× Berndtsson, Ronny |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Groundwater contamination by nitrate is a common problem in many parts of the world. The agriculturally important Shimabara district in Nagasaki, Japan, is experiencing this problem. The general source of drinking water of the study area is groundwater and consequently the nitrate contamination is a significant problem. For this reason, a groundwater investigation was performed and water samples were collected at 40 locations including residential areas, public water supply wells, springs, and rivers from August 2011 to November 2013. Results showed that nitrate nitrogen (NO3-N) concentration is exceeding the Japanese drinking water quality standards (10 mg L?1) at 15 locations. Maximum NO3-N concentration was 26.6 mg L?1. Nitrate (NO?3) was strongly correlated with Cl? (r = 0.96), K+ (r = 0.68), SO2?4 (r = 0.66), and Ca2+ (r = 0.59), respectively. The high correlations with Cl? and K+ are related to livestock waste. Corresponding correlation with SO2?4 is related to chemical fertilizers and Ca2+ to calcareous material to neutralize acidic soil. Both the first and second components in principal component analysis reflect ion dissolution from aquifer matrix during groundwater flow along the mountain side towards the lower reaches of the alluvial fan. Using hierarchical cluster analysis, chemical characteristics of groundwater were classified into four clusters. One cluster is strongly related to the nitrate contaminated groundwater and the other clusters reflect the origin of the major ions in the groundwater. | |||||
書誌情報 |
Environmental Earth Sciences 巻 75, 号 3, p. 234, 発行日 2016-02 |
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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/s12665-015-4971-9 | |||||
権利 | ||||||
権利情報 | c Springer-Verlag Berlin Heidelberg 2015 | |||||
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(3), art. no.234; 2016 |