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NITRATE NITROGEN POLLUTION BY RECHRGE IN AGRIVULTURAL AREA IN KUMAMOTO AREA, JAPAN
http://hdl.handle.net/10173/1246
http://hdl.handle.net/10173/12460c784cdf-615c-42f1-a4b2-bd74cda38f79
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
sms13-5572.pdf (1.9 MB)
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| Item type | 会議発表論文 / Conference Paper(1) | |||||
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| 公開日 | 2015-02-28 | |||||
| タイトル | ||||||
| タイトル | NITRATE NITROGEN POLLUTION BY RECHRGE IN AGRIVULTURAL AREA IN KUMAMOTO AREA, JAPAN | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||
| 資源タイプ | conference paper | |||||
| 著者 |
ICHIKAWA, Tsutomu
× ICHIKAWA, Tsutomu× ITO, Yui× MEKPRUKSAWONG, Phattaporn |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Kumamoto city located in the middle of the Kyusyu Island, Japan is a greatest city which uses groundwater for domestic water. There are 4 groundwater areas in Kumamoto prefecture, and the Kumamoto area is the biggest one in those 4 areas. In this area, all of domestic water for 1 million populations depends only on groundwater. In addition, this groundwater is used to agriculture and industrial too. And this groundwater is the important resource for supporting development of Kumamoto prefecture. However, groundwater level decreased year by year until 2004. It seems that paddy field having high ability for groundwater recharge is continuously decreasing. Because of that, Kumamoto city and 4 companies have performed the ponding water project on the farmland in the Middle Shira-River Area since 2004. The ponding water project is that farmer keep water on farmland which stops cropping rice by the acreage-reduction policy. In this way, groundwater level is rise up. However, recently, the nitrate nitrogen concentration of groundwater rises. And, it is said that the ponding water project is a cause of the nitrate nitrogen pollution of groundwater. Therefore the authors estimated quantity of nitrate nitrogen eluviation from ponding water on farmland in the Middle Shira-River Area. The typical crop fields are selected for analysis. As a result, it is considered that the ponding water project does not contribute to the nitrate nitrogen pollution. |
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| 書誌情報 |
Society for Social Management Systems Internet Journal 巻 9, 発行日 2014-12 |
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| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| 出版者 | ||||||
| 出版者 | Society for Social Management Systems | |||||
