By Tomoko M. Nakanishi (auth.), Tomoko M. Nakanishi, Keitaro Tanoi (eds.)
Following the Fukushima nuclear twist of fate, a wide quantity of tracking facts has been gathered concerning the soil, air, airborne dirt and dust, and seawater, in addition to info approximately a big variety of meals provided to the industry. Little is understood, besides the fact that, in regards to the impression of radioactive fallout on agriculture, information regarding that's very important. even though greater than eighty% of the broken sector is said to agriculture, in situ details in particular for agriculture is scarce. This e-book presents facts 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 illness, less than what stipulations crops gather radioactive cesium of their safe to eat elements, and the way radioactivity is transferred from hay to take advantage of. simply because agriculture is so heavily with regards to nature, many experts with diversified components of workmanship needs to be keen on answering those questions. in relation 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 goal, the Graduate university of Agricultural and lifestyles Sciences of The college of Tokyo has different amenities to be had all through Japan, together with farmlands, forests, and meadowlands. Many educational employees contributors have shaped teams to behavior on-site learn, with greater than forty volunteers partaking. This e-book provides the knowledge amassed from the single venture being systematically performed throughout Japan after the Fukushima accident.
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Additional info for Agricultural implications of the Fukushima nuclear accident
The radioactive material then entered the environment and moved into the soil, where it was absorbed through the roots resulting in long-term contamination of crops. The level of root absorption is greatly affected by the behavior of the radioactive material in the soil and the soil-to-plant transfer factor depends on the specific soil type because radioactive materials such as cesium are strongly bound to the soil granules (Yamaguchi et al. 2012). Because the typical farm soil in the affected area (mainly Fukushima) was a gray lowland soil, which binds cesium strongly, the radiocesium contamination of various crops through root absorption was much lower than the provisional regulation level (500 Bq/kg) in most cases during 2011.
A number of K transporters have been identified in plants, and Cs transport has been demonstrated for several of these K transporters. The KUP/HAK/KT family, the family of high-affinity K+ transporters, has been shown to participate in Cs absorption (White and Broadley 2000). Yeast expressing Arabidopsis thaliana KUP1 absorbs K+, and its activity is affected by the presence of Cs+ (Fu and Luan 1998). Under high K conditions, voltage-insensitive cation channels (VICCS), independent cation channels, participate in Cs absorption (White and Broadley 2000).
In fact, many of the paddy fields that exceeded the provisional regulation level used mountain runoff as an irrigation source because it is very rich in nutrients such as potassium and magnesium (Fig. 2). Although the concentration of ionized radiocesium in the mountain runoff was rather low, the radiocesium concentration in the suspended solids (colloid) increased to several Bq/L after rainfall (unpublished data). Thus, it is important to determine how the suspended organic material decomposes to release ionized radiocesium into the irrigation water.
Agricultural implications of the Fukushima nuclear accident by Tomoko M. Nakanishi (auth.), Tomoko M. Nakanishi, Keitaro Tanoi (eds.)