2016 Fiscal Year Annual Research Report
Study of stable cesium for the long-term prognosis of radiocesium cycling in forest ecosystems after Fukushima NPP accident
Publicly Offered Research
| Project Area | Interdisciplinary Study on Environmental Transfer of Radionuclides from the Fukushima Daiichi Nuclear Power Plant Accident |
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| Project/Area Number |
15H00968
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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 – 2017-03-31
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| Keywords | stable cesium / Fukushima accident / radiocesium / forest ecosystems / Japanese cedar / radionuclide fluxes / root uptake |
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| Outline of Annual Research Achievements |
The quasi-equilibrium between stable and radioactive cesium in the studied Japanese cedar forest has not been reached yet. We predict
- further removal of the residues of the initially intercepted radiocesium from oldest foliage, small branches and outer bark;
- increase of the radiocesium concentrations in young foliage, inner bark and sapwood;
- increase of the radiocesium concentrations and total inventories in heartwood due to its internal translocation from sapwood and inner bark;
- since heartwood is the final depot of cesium isotopes in Japanese cedar, the radiocesium fraction in the tree trunks will not decrease with time; moreover, the total radiocesium fraction in the aboveground biomass may increase with time due to intensification of its root uptake and growth of biomass.
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| Research Progress Status |
28年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
28年度が最終年度であるため、記入しない。
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Research Products
(10 results)
