AN ANALYSIS OF THE RELATION BETWEEN GROUNDWATER NITRATE CONCENTRATION AND LAND USE IN THE MIYAKONOJO BASIN
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- HIRAOKA Toru
- 長崎県立大学 情報システム学部情報システム学科
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- TOYOMITSU Yukio
- 宮崎大学 農学部植物生産環境科学科
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- NAKAGAWA Kei
- 長崎大学 大学院水産・環境科学総合研究科環境科学領域
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- NONAKA Hirofumi
- 長岡技術科学大学 大学院情報・経営システム工学専攻
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- HIROTA Masaharu
- 岡山理科大学 総合情報学部情報科学科
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- SUZUKI Yoshihiro
- 宮崎大学 工学教育研究部社会環境システム工学科
Bibliographic Information
- Other Title
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- 都城盆地における地下水の硝酸性窒素濃度と土地利用の関係分析
- トジョウ ボンチ ニ オケル チカスイ ノ ショウサンセイ チッソ ノウド ト トチ リヨウ ノ カンケイ ブンセキ
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Abstract
We analyzed the relation between groundwater nitrate concentration and land use in the Miyakonojo basin. Nitrate concentration was measured in 1,202 wall in February and August from 2007 and 2016. Land use was based on 100m mesh data of National Land Numerical Information in FY 2009 and 2014, and was the ratio of land use type included within a certain distance from the observation point of nitrate concentration. As land use type, we picked up nine items such as rice field, other agricultural land, forest, wasteland, building land, road, railroad, other land and river and lake. As a result, we clarified the tendency of land use type at high and low nitrate concentrations. In addition, we also clarified the land use type that is highly correlated with nitrate concentration. At this time, we examined how to change the correlation coefficient with the ratio of land use type according to the distance from the observation point of nitrate concentration.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)
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Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 74 (5), I_87-I_94, 2018
Japan Society of Civil Engineers
