Equilibrium of radiocesium with stable cesium within the biological cycle of contaminated forest ecosystems

Yoshida, Satoshi; Muramatsu, Yasuyuki; Dvornik, A.; Zhuchenko, T. A.; Linkov, Igor

doi:10.1016/j.jenvrad.2003.12.008

Cited by 95 publications

(32 citation statements)

References 32 publications

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“…Cesium adsorption depends on the type of charcoal and biochar Uptake of mobile radioactive cesium by plants is considered to be involved in the redistribution of cesium to water and agricultural products (Sanderson et al, 2001;Yoshida et al, 2004). Thus, we used a plant material, wheat bran extract, as a matrix for radioactive cesium in this study.…”

Section: Resultsmentioning

confidence: 99%

“…However, radioactive cesium may slowly be redistributed due to uptake of mobile cesium by plants and by repartitioning in the ecosystem through equilibration with non-radioactive cesium (Sanderson et al, 2001;Yoshida et al, 2004). Thus, to minimize contamination and reduce the spread of radioactive cesium in water and agricultural products, immobilization of mobile radioactive cesium is desirable.…”

Section: Introductionmentioning

confidence: 99%

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Removal of Radioactive Cesium (134Cs plus 137Cs) from Low-Level Contaminated Water by Charcoal and Broiler Litter Biochar

Kimura

Hachinohe

Klasson

et al. 2014

FSTR

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Removal of Radioactive Cesium (134Cs plus 137Cs) from Low-Level Contaminated Water by Charcoal and Broiler Litter Biochar

Kimura

Hachinohe

Klasson

et al. 2014

FSTR

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“…Cs and Sr) is dominated by competitive interaction with the corresponding major ions Ehlken and Kirchner, 2002;Yoshida et al, 2004 where Ca and Sr refer to the bioavailable form of the element, and the factor f accounts for a preferential uptake. The Sr/Ca ratios (or in analogy the Cs/K ratios) of a soil can be viewed as a transfer potential.…”

Section: Grass Contamination and Soil-to-vegetation-transfermentioning

confidence: 99%

Lower variability of radionuclide activities in upland dairy products compared to soils and vegetation: Implication for environmental survey

2007

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Contamination of the environment by radionuclides is usually estimated using soil and grass sampling. However, radionuclides are often not homogeneously distributed in soils. In the alpine Mercantour region (Western Alps, France) a large heterogeneity in Chernobyl 137 Cs deposition has been previously observed. Sr contents are less variable in milk samples than in grass or soil samples. This can be attributed to the homogenization effect of cow vagrancy during grazing. Hence milk seems to be a more robust sample than soil or grass to evaluate the extent of contamination on a regional scale. We explore this idea by comparing own unpublished 90 Sr results and 90 Sr results from the literature to establish the relationship between altitude of grazing and contamination of soil and milk for Western Europe. There is a significant positive correlation between soil contamination and altitude and an even closer correlation between milk 90 Sr activity (A) and altitude (h): A = A 0 + e kAEh where A 0 is the expected activity of milk sampled at sea level (A 0 = 0.064 ± 0.014 Bq g À1Ca) and h is the altitude of grazing, k being a constant (k = 0.95 · 10 À3 ± 0.11 · 10 À3 m À1 Bq g À1 Ca). The fact that there is less scattering in the relationship for the 90 Sr milk -altitude than for 90 Sr soil -altitude suggests, again, that milk is a well-suited sample for environmental survey. The relationship between the altitude of grazing and the 90 Sr content of milk and cheese can also be used to assess the authenticity of dairy products.

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“…Cs were constant throughout pine and birch stands (Yoshida et al 2004). This shows that the Cs concentrations in forest ecosystems reached an equilibrium between stable isotopes and other elements.…”

mentioning

confidence: 99%

The Effects of Radioactive Contamination on the Forestry Industry and Commercial Mushroom-Log Production in Fukushima, Japan

Miura

2016

Agricultural Implications of the Fukushima Nuclear Accident

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The accident at the Fukushima Daiichi nuclear power plant in 2011 left surrounding residential, agricultural, and forested areas contaminated with radiation on a massive scale. To encourage evacuees to return to their homes and resume agricultural practices, large-scale decontamination of radioactive zones is ongoing in residential and agricultural areas. However, contamination of forests is extensive and decontamination efforts have been limited by remote access, significant labor requirements, and the considerable amount of anticipated radioactive waste. Consequently, there has been no large-scale effort to decontaminate forests as there has been for residential and agricultural land. In this paper, we examine the current protection of forests from radioactive contamination and discuss measures required to promote forest restoration. In addition, we consider how forest contamination relates to radiation exposure in humans and summarize the state of the forestry industry since the Fukushima accident. We also consider how radiation affects forest products in Fukushima, emphasizing mushroom-log production. Finally, we examine the challenges surrounding the reconstruction and revival of forests and forestry in Fukushima.

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Equilibrium of radiocesium with stable cesium within the biological cycle of contaminated forest ecosystems

Cited by 95 publications

References 32 publications

Removal of Radioactive Cesium (134Cs plus 137Cs) from Low-Level Contaminated Water by Charcoal and Broiler Litter Biochar

Removal of Radioactive Cesium (134Cs plus 137Cs) from Low-Level Contaminated Water by Charcoal and Broiler Litter Biochar

Lower variability of radionuclide activities in upland dairy products compared to soils and vegetation: Implication for environmental survey

The Effects of Radioactive Contamination on the Forestry Industry and Commercial Mushroom-Log Production in Fukushima, Japan

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