Home About Browse Search
Svenska


Interception and retention of wet-deposited radiocaesium and radiostrontium on a ley mixture of grass and clover

Bengtsson, Stefan and Gärdenäs, Annemieke and Eriksson, Jan and Vinichuk, Mykhailo and Rosén, Klas (2014). Interception and retention of wet-deposited radiocaesium and radiostrontium on a ley mixture of grass and clover. Science of the total environment. 497-498, 412-419
[Journal article]

[img]
Preview
PDF - Accepted Version
890kB

Official URL: http://dx.doi.org/10.1016/j.scitotenv.2014.07.099

Abstract

The aims of this study were to assess the potential radioactive contamination of fodder in the case of accidental radionuclide fallout, and to analyse the relationship between interception and retention of radionuclides as a function of biomass and Leaf Area Index (LAI). The interception and the retention of wet deposited 134Cs and 85Sr in ley (a mixture of grass and clover) were measured after artificial wet deposition in a field train in Uppsala (eastern central Sweden). The field trial had a randomised block design with three replicates. 134Cs and 85Sr were deposited at six different growth stages during two growing seasons (20101 and 2011) using a rainfall simulator. The biomass was sampled in the centre of each parcel 2 to 3 h after deposition and at later growth stages (1 to 5) during the growing season. The above ground biomass and LAI were measured as well.
The interception of radionuclides by the ley was largest at the late growth stages; the spike and tassel/flowering (code 5:6) in the 1st year, and at flowering/initial flowering (code 6:5) in the 2nd year. There was a correlation between radionuclide interception and above ground biomass, as well with LAI, for both radionuclides in both years. The highest activity concentrations of both radionuclides were measured after deposition at the late growth stages and were found to be higher in the 2nd year. There weathering half-lives were shorter at the earlier growth stages than at the later growth stages for both radionuclides. For the magnitude of deposition chosen in our experiment, it can be concluded that the above ground biomass is a good predictor and the LAI a more uncertain predictor of the interception of radiocaesium and radiostrontium by ley grass and clover.

Authors/Creators:Bengtsson, Stefan and Gärdenäs, Annemieke and Eriksson, Jan and Vinichuk, Mykhailo and Rosén, Klas
Title:Interception and retention of wet-deposited radiocaesium and radiostrontium on a ley mixture of grass and clover
Series/Journal:Science of the total environment (0048-9697)
Year of publishing :July 2014
Volume:497-498
Page range:412-419
Publisher:Elsevier B.V.
ISSN:0048-9697
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Accepted version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Environmental Sciences (social aspects to be 507)
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Keywords:Fodder crops, Growth stages, Radioactive deposition, Weathering half-life, Aggregated transfer factor
URN:NBN:urn:nbn:se:slu:epsilon-e-2141
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-2141
ID Code:11527
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment
External funders:Swedish Radiation Safety Authority
Deposited By: Stefan Bengtsson
Deposited On:29 Sep 2014 11:58
Metadata Last Modified:02 Dec 2014 11:08

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits