2019.09.03 16:01
東日本の川における放射性セシウムの動態解明に関する研究成果が印刷されました。
本文ダウンロードページ
http://doi.org/10.1016/j.scitotenv.2019.134093
要旨
To investigate the main factors that control the dissolved radiocesium concentration in river water in the area affected by the Fukushima Daiichi nuclear power plant accident, the correlations between the dissolved 137Cs concentrations at 66 sites normalized to the average 137Cs inventories for the watersheds with the land use, soil components, topography, and water quality factors were assessed. We found that the topographic wetness index is significantly and positively correlated with the normalized dissolved 137Cs concentration. Similar positive correlations have been found for European rivers because wetland areas with boggy organic soils that weakly retain 137Cs are mainly found on plains. However, for small Japanese river watersheds, the building area ratio in the watershed strongly affected the dissolved 137Cs concentration. One reason for this would be because the high concentrations of solutes, such as K+ and dissolved organic carbon, discharged in urban areas would inhibit 137Cs absorption to soil particles. A multiple regression equation was constructed to predict the normalized dissolved 137Cs concentration with the topography, land use, soil component, and water quality data as explanatory variables. The best model had the building land use as the primary predictor. When comparing two multiple regression models in which the explanatory variables were limited to (1) the land use and soil composition and (2) the water quality, the water quality model underestimated the high normalized dissolve 137Cs concentration in urban areas. This poor reproducibility indicates that the dissolved 137Cs concentration value in urban areas cannot be solely explained by the solid-liquid distribution of 137Cs owing to the influence of the water quality, but some specific 137Cs sources in urban areas would control the dissolved 137Cs concentration.
番号 | タイトル | 日付 | 閲覧数 |
---|---|---|---|
48 | 福島大学食農学類AO入試 | 2018.09.28 | 3884 |
47 | (査読付論文の印刷)農業農村工学会誌、2021.7 | 2021.06.21 | 2237 |
46 | 水利研ホームページを作成しています。 | 2018.06.21 | 998 |
45 | 山木屋学校 | 2018.10.08 | 918 |
44 | 福島大学農学系教育研究組織の設置に向けて | 2018.09.11 | 843 |
43 | 食農学類概要 | 2018.08.30 | 840 |
42 | 平成30年度農業農村工学会講演会京都大会において、食農学類を紹介します。 | 2018.08.31 | 797 |
41 | 福島大学農学群食農学類の設置認可 | 2018.08.30 | 788 |
40 | 浪江町酒田地区稲刈り | 2018.10.08 | 740 |
39 | 研究論文の印刷について(Paddy and Water Environment、2019.3) | 2019.03.22 | 718 |
38 | 国際水田・水環境学会(PAWEES)の国際会議 | 2018.11.26 | 690 |
37 | 秋のオープンキャンパス(2018.10.20) | 2018.10.22 | 663 |
36 | 査読付論文の抄録等の更新 | 2019.02.08 | 571 |
35 | (受託研究)国立研究開発法人 産業総合研究所より | 2019.07.10 | 544 |
34 | 大学生のための農業農村工学会のLINE公式アカウント | 2020.05.03 | 539 |
» | 研究論文の印刷(Science of The Total Environment、2019.8) | 2019.09.03 | 486 |
32 | (交付内定)クリタ水・環境科学振興財団国際会議助成(発表) | 2019.07.18 | 478 |
31 | 発表論文の正式印刷(Paddy and Water Environment) | 2019.10.06 | 453 |
30 | 福島県農業土木事業現場の見学 | 2020.12.16 | 448 |
29 | 研究論文の印刷(Journal of Radioanalytical and Nuclear Chemistry、2019.8) | 2019.08.19 | 435 |