{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360002216009653120.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1016/j.jenvrad.2014.06.018"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0265931X14001829?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0265931X14001829?httpAccept=text/plain"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Radiocesium distribution in sugi ( Cryptomeria japonica ) in Eastern Japan: translocation from needles to pollen"}],"description":[{"notation":[{"@value":"Abstract   We assessed the radiocesium contamination of sugi (Cryptomeria japonica) forests in eastern Japan from November 2012 to February 2013, including 80 sites in Fukushima and 35 sites in other regions (Tohoku and Kanto-Koshinetsu), by measuring the 137Cs concentrations in needles of different ages, male flowers, and pollen. Over a wide geographic area, needles that were present at the time of the Fukushima Dai-ichi Nuclear Power Plant accident contained much higher 137Cs concentrations than needles that emerged after the accident. This result, together with visual analysis of 137Cs distribution using autoradiography, indicated that some of the 137Cs derived from direct fallout remained on the surface of the older needles. Since we also detected 137Cs in younger needles and male flowers, we concluded that 137Cs was translocated toward the tips of sugi needles. The 137Cs concentration in male flowers was higher than and positively correlated with that in the currently growing (2012) needles. Also, a positive relationship was observed between the 137Cs concentration of male flowers and pollen, and they were found to be nearly identical 137Cs concentration. These results indicate the occurrence of acropetal translocation of 137Cs from old needles to young needles, male flowers and pollen. However, the results as related to 137Cs concentration in the needles of three different ages differed from the results of similar studies conducted more than 4 y after the Chernobyl accident. This suggests that, 2 y after the Fukushima Dai-ichi NPP accident, the distribution of 137Cs in the sugi forests has not yet reached a steady state."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380284919159623040","@type":"Researcher","foaf:name":[{"@value":"Tsutomu Kanasashi"}]},{"@id":"https://cir.nii.ac.jp/crid/1380002216009653120","@type":"Researcher","foaf:name":[{"@value":"Yuki Sugiura"}]},{"@id":"https://cir.nii.ac.jp/crid/1380002216009653121","@type":"Researcher","foaf:name":[{"@value":"Chisato Takenaka"}]},{"@id":"https://cir.nii.ac.jp/crid/1380284919159623041","@type":"Researcher","foaf:name":[{"@value":"Naoki Hijii"}]},{"@id":"https://cir.nii.ac.jp/crid/1380002216009653122","@type":"Researcher","foaf:name":[{"@value":"Mitsutoshi Umemura"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"0265931X"}],"prism:publicationName":[{"@value":"Journal of Environmental Radioactivity"}],"dc:publisher":[{"@value":"Elsevier BV"}],"prism:publicationDate":"2015-01","prism:volume":"139","prism:startingPage":"398","prism:endingPage":"406"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","dc:rights":["https://www.elsevier.com/tdm/userlicense/1.0/"],"url":[{"@id":"https://api.elsevier.com/content/article/PII:S0265931X14001829?httpAccept=text/xml"},{"@id":"https://api.elsevier.com/content/article/PII:S0265931X14001829?httpAccept=text/plain"}],"createdAt":"2014-07-16","modifiedAt":"2018-10-01","project":[{"@id":"https://cir.nii.ac.jp/crid/1040000782190174464","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"24110007"},{"@type":"JGN","@value":"JP24110007"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PLANNED-24110007/"}],"notation":[{"@language":"ja","@value":"陸域生態系における放射性物質の循環過程の理解"},{"@language":"en","@value":"Comprehensive evaluation on dynamics of radionuclides in a  terrestrial ecosystem"}]},{"@id":"https://cir.nii.ac.jp/crid/1040282257166813056","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"24110001"},{"@type":"JGN","@value":"JP24110001"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-ORGANIZER-24110001/"}],"notation":[{"@language":"ja","@value":"福島原発事故により放出された放射性核種の環境動態に関する学際的研究：総括班"},{"@language":"en","@value":"Interdisciplinary Study on Environmental Transfer of Radionuclides from the Fukushima Daiichi NPP Accident"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050001202554443904","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Radiocaesium partitioning in Japanese cedar forests following the “early” phase of Fukushima fallout redistribution"}]},{"@id":"https://cir.nii.ac.jp/crid/1050005822287190528","@type":"Article","resourceType":"学術雑誌論文(journal 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