Temporal changes in the spatial patterns of air dose rate from 2012 to 2016 at forest floors in Fukushima, Japan.

Cesium Radioisotopes / analysis Forests Fukushima Nuclear Accident Japan Radiation Monitoring Soil Pollutants, Radioactive
Fukushima Daiichi Nuclear Power Plant accident Organic layer Radiocesium Spatial distribution Steep hillslope Surface mineral soil layer

Journal

Journal of environmental radioactivity
ISSN: 1879-1700
Titre abrégé: J Environ Radioact
Pays: England
ID NLM: 8508119

Informations de publication

Date de publication:
Oct 2020
Historique:
received: 11 03 2020
revised: 30 07 2020
accepted: 01 08 2020
pubmed: 28 8 2020
medline: 15 9 2020
entrez: 28 8 2020
Statut: ppublish

Résumé

This study investigates temporal changes in the distribution of air dose rates at forest floors from 2012 to 2016 by measuring air dose rates at a height of 10 cm. The study was conducted at four different topography forest sites in Fukushima Prefecture, Japan. At each forest site, the air dose rate was found to have decreased by 7%-22% over time from 2012 to 2016 owing to the movement of radiocesium from organic layers to mineral soil layers in the forest site. However, the spatial distribution patterns of air dose rates did not change at these forest sites over five years. Besides, high correlations between air dose rates and organic plus surface mineral soil inventories were found at these forest sites during most of study years. Therefore, little changes in the spatial distribution of air dose rates could be caused by radiocesium retention at the same location in these forest sites. No statistical correlation between air dose rates and slope gradients was found in the two hilly forest sites with steep slopes above 35°. Accordingly, this study shows that the distribution patterns of air dose rates in the forest floors remained stable depending on the spatial distribution of radiocesium, which formed in the early phase after the Fukushima Daiichi Nuclear Power Plant accident.

Identifiants

DOI: 10.1016/j.jenvrad.2020.106377 PMID: 32854068
pubmed: 32854068
pii: S0265-931X(20)30187-9
doi: 10.1016/j.jenvrad.2020.106377
pii:
doi:

Substances chimiques

Cesium Radioisotopes 0
Soil Pollutants, Radioactive 0

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

106377

Informations de copyright

Copyright © 2020 The Authors. Published by Elsevier Ltd.. All rights reserved.

Auteurs

Naohiro Imamura (N)

Department of Forest Soils, Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba, Ibaraki, 305-8687, Japan. Electronic address: nimamura@ffpri.affrc.go.jp.

Toshiya Matsuura (T)

Department of Forest Management, Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba, Ibaraki, 305-8687, Japan.

Akio Akama (A)

Center for Forest Restoration and Radioecology, Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba, Ibaraki, 305-8687, Japan.

Shigeto Ikeda (S)

Department of Forest Soils, Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba, Ibaraki, 305-8687, Japan; Center for Forest Restoration and Radioecology, Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba, Ibaraki, 305-8687, Japan.

Masahiro Kobayashi (M)

Department of Forest Soils, Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba, Ibaraki, 305-8687, Japan.

Satoru Miura (S)

Center for Forest Restoration and Radioecology, Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba, Ibaraki, 305-8687, Japan.

Yoshiki Shinomiya (Y)

Center for Forest Restoration and Radioecology, Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba, Ibaraki, 305-8687, Japan.

Shinji Kaneko (S)

Kansai Research Center, Forestry and Forest Products Research Institute, 68 Nagaikyutaroh, Momoyama, Fushimi, Kyoto, Kyoto, 612-0855, Japan.

Articles similaires

Issues in the Adoption of Online Medical Care: Cross-Sectional Questionnaire Survey.

Yuka Sugawara, Yosuke Hirakawa, Masao Iwagami et al.
1.00
Humans Cross-Sectional Studies Telemedicine Japan Surveys and Questionnaires

Modeling NPP and NDVI time series in different bioclimatic regions of Iran.

Fahimeh Sayedzadeh, Saied Soltani, Reza Modarres
1.00
Iran Environmental Monitoring Seasons Ecosystem Forests

Sex differences in extracorporeal cardiopulmonary resuscitation for out-of-hospital cardiac arrest: nationwide multicenter retrospective study in Japan.

Akira Kawauchi, Yohei Okada, Makoto Aoki et al.
1.00
Humans Out-of-Hospital Cardiac Arrest Female Male Japan

Validity of the self-reported number of teeth in independent older people in Japan.

Yoshihiro Shimazaki, Mizuki Saito, Toshiya Nonoyama et al.
1.00
Humans Japan Female Aged Self Report

Classifications MeSH

questionsmedicales.fr › Produits chimiques inorganiques › Métaux › Métaux lourds › Césium › Isotopes du césium › Radio-isotopes du césium › Temporal changes in the spatial patterns of...
questionsmedicales.fr › Environnement et santé publique › Environnement › Écosystème › Forêts › Temporal changes in the spatial patterns of...
questionsmedicales.fr › Environnement et santé publique › Santé publique › Accidents › Émission de source de risque radioactif › Accident nucléaire de Fukushima › Temporal changes in the spatial patterns of...
questionsmedicales.fr › Régions géographiques › Iles › Japon › Temporal changes in the spatial patterns of...
questionsmedicales.fr › Environnement et santé publique › Santé publique › Hygiène radiologique › Contrôle des radiations › Temporal changes in the spatial patterns of...
questionsmedicales.fr › Actions chimiques et utilisations › Actions toxiques › Polluants environnementaux › Polluants du sol › Polluants radioactifs du sol › Temporal changes in the spatial patterns of...