2017 Fiscal Year Annual Research Report
Development and application of the flux approach for modelling of the long-term radiocesium cycling in Fukushima forests
| Project/Area Number |
15K00563
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| Research Institution | Fukushima University |
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Principal Investigator |
Yoschenko Vasyl 福島大学, 環境放射能研究所, 特任教授 (40745569)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | Fukushima accident / radiocesium / stable cesium / Japanese cedar / forest ecosystems / radiocesium fluxes |
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| Outline of Annual Research Achievements |
The major tasks of the project were successfully achieved. In order to finalize the research, during FY2017 we focused on:
- determination of the general trends and inter-species differences in the radiocesium dynamics in the forest ecosystems. For this purpose, we continued monitoring of the radiocesium dynamics at the experimental sites in Yamakiya (Japanese cedar), Tsushima (cedar and Japanese red pine) and FD1NPP (mixed forest), and started monitoring at the new sites in Tomioka (mature cedar, young cypress and old cypress) and Kunugidaira (pine and cypress). For our principal study species, Japanese cedar, the general trends at the different sites include removal of radiocesium from the biomass compartments that were exposed to initial deposition (foliage, branches and outer bark) and stabilization of its concentrations in other compartments, gradual approaching the equilibrium with stable cesium and higher concentrations in heartwood as compared to sapwood;
- characterization of vertical distributions of the radiocesium chemical forms (soluble, exchangeable and fixed) in soil profiles and determination of the parameters necessary for modelling of its migration (Kd, soil moisture retention curves and saturated permeability values);
- calculation of the radiocesium fluxes and modelling its long-term redistribution in Scots pine forest in Ukraine (based on the dataset received from the Ukrainian sub-contractor in FY2016) and at the experimental site in Yamakiya;
- evaluation of impact of the Fukushima accident on forestry and analysis of the possible steps for revitalization
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| Remarks |
Conceptual approaches, methodology and knowledge acquired during the project research will be applied for completion of task 2-3 of the international project, "Monitoring and modelling of forest"
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Research Products
(11 results)
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[Journal Article] Natural attenuation of Fukushima-derived radiocesium in soils due to its vertical and lateral migration2018
Author(s)
A. Konoplev, V. Golosov, Y. Wakiyama, T. Takase, V. Yoschenko, T. Yoshihara, O. Parenyuk, A. Cresswell, M. Ivanov, M. Carradine, K. Nanba, Y. Onda
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Journal Title
Journal of Environmental Radioactivity
Volume: 186
Pages: 23-33
DOI
Peer Reviewed / Int'l Joint Research
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