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Agricultural implications of the Fukushima nuclear accident by Tomoko M. Nakanishi (auth.), Tomoko M. Nakanishi, Keitaro

By Tomoko M. Nakanishi (auth.), Tomoko M. Nakanishi, Keitaro Tanoi (eds.)

Following the Fukushima nuclear coincidence, a wide quantity of tracking information has been accumulated in regards to the soil, air, dirt, and seawater, in addition to information approximately an incredible variety of meals provided to the industry. Little is understood, even if, in regards to the impact of radioactive fallout on agriculture, information regarding that's important. even though greater than eighty% of the broken sector is expounded to agriculture, in situ details in particular for agriculture is scarce. This e-book presents information in regards to the genuine circulation and accumulation of radioactivity within the ecological system—for instance, no matter if particles deposited on mountains could be a explanation for secondary infection, lower than what stipulations crops collect radioactive cesium of their fit for human consumption elements, and the way radioactivity is transferred from hay to exploit. simply because agriculture is so heavily concerning nature, many experts with various components of workmanship has to be all in favour of answering those questions. with regards to rice, researchers in rice cultivation in addition to in soil, hydrology, and radioactivity size are operating jointly to bare the trails or accumulation of radioactivity within the box. For this objective, the Graduate college of Agricultural and lifestyles Sciences of The college of Tokyo has varied amenities to be had all through Japan, together with farmlands, forests, and meadowlands. Many educational employees individuals have shaped teams to behavior on-site learn, with greater than forty volunteers partaking. This booklet provides the knowledge accumulated from the one venture being systematically performed throughout Japan after the Fukushima accident.

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Plant roots can easily absorb this form of Cs. This adhesion of Cs on soil solids is referred to as “weak fixation” in the present study. On the other hand, Cs strongly fixes to other types of clay crystals such as silicate sheets. The strongly fixed Cs ions on these clay particles are rarely replaced by other cations as soluble ions, and thus are seldom absorbed by plant roots. , approximately q = 1,000 mm/ year in Japan as well as in Fukushima. 5 is approximately v = q/θ = 2 m/year. However, the average velocity of Cs is retarded because of its fixation to soil solids.

The concentration of radiocesium that accumulated in the rice shoots was measured using a germanium semiconductor detector after 26 days of cultivation and rice plants accumulated radiocesium concentrations of almost 600 Bq/kg (dry matter) in their shoots (Fig. 4). This absorption level was 1,000 times higher than that from soil. This unusually high absorption level was undoubtedly because of the artificial culture conditions where the whole root system was exposed to the solution medium during hydroponic culture, which is not expected to occur in actual paddy fields.

Plant Soil 254:443–455 Zhu Y-G, Smolders E (2000) Plant uptake of radiocaesium: a review of mechanisms, regulation and application. J Exp Bot 51:1635–1645 Chapter 6 Vertical Migration of Radiocesium Fallout in Soil in Fukushima Sho Shiozawa Abstract The vertical migration of radiocesium fallout in the soil was monitored for 1 year at several locations in Fukushima after the nuclear power plant explosion. We determined the vertical gamma ray intensity profiles in boreholes in the soil using a scintillation survey meter with a lead collimator to restrict the incoming radiation, only allowing horizontal detection.

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