Elucidation of groundwater quality formation mechanism through nitrification and denitrification processes by microbe activity

2015 Fiscal Year Final Research Report

• Project/Area Number: 25450365
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Rural environmental engineering/Planning
• Research Institution: University of the Ryukyus
• Principal Investigator: NAKANO TAKUJI 琉球大学, 農学部, 教授 (30595202)
• Co-Investigator(Kenkyū-buntansha): YASUMOTO Jun 琉球大学, 農学部, 助教 (70432870)
• Co-Investigator(Renkei-kenkyūsha): HIROSIRO Yosinari 九州大学, 工学部, 准教授 (90218834) ; NAKAGAWA Kei 長崎大学, その他の研究科, 教授 (90315135) ; HOSONO Takahiro 熊本大学, 大学院先導機構, 准教授 (30367065)
• Research Collaborator: HIROSE Mina 一般社団法人トロピカルテクノプラス, 研究員
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 地下水 / 硝酸性窒素 / 琉球石灰岩分布地域 / 硝化・脱窒 / 農業用水 / 水質形成 / 微生物活動

Outline of Final Research Achievements

For the basement dam irrigation basins in the southern part of Okinawa Main Island, It was grasped a material transportation phenomenon of the groundwater through field observation and column examination to cope with the issue of nitric acid pollution of the groundwater by the agricultural production activity in this study．It was also inspected physics environment condition to modify creature metabolism of the identification of the microbe which participated in nitrification and denitrification process using stable isotope ratio analysis and molecular biologic technique. As for the result of this study, it is expected through utilization to the appropriate groundwater use including water quality management that we contribute to the progress of an agriculture water use technology and the environmental conservation type agricultural production activity technologies of farm agriculture areas.

Free Research Field

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