Long-term retention of Cs-137 in three forest soil types with different soil properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027073%3A_____%2F16%3AN0000085" target="_blank" >RIV/00027073:_____/16:N0000085 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/86652052:_____/16:N0000036

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0265931X1630100X" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0265931X1630100X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jenvrad.2016.04.010" target="_blank" >10.1016/j.jenvrad.2016.04.010</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Long-term retention of Cs-137 in three forest soil types with different soil properties

Popis výsledku v původním jazyce

Current Cs-137 activity concentrations were studied at three localities in individual soil horizons of Stagnosol, Arenic Podzol and Haplic Cambisol soil units in soil blocks with dimensions of 20 x 20 x 40 cm situated below pine canopies (n = 3) and spruce canopies (n = 3), and below small canopy gaps, at least 15 x 15 m in area (n = 3 + 3), which have probably endured since 1986. The main zone of Cs-137 accumulation in all the localities was found to be in the organic horizons (H and F). No significant transport and accumulation of Cs-137 into illuvial soil horizons (Bm, Bs or Bhs, Bv and Bv/IIC) was found. The estimated current total Cs-137 activity concentrations in the soil blocks 40 cm in depth were only slightly higher below the coniferous canopy than they were below nearby canopy gaps. The inventory of Cs-137 in the soils was found to be in accordance with the estimated Cs-137 inputs from the Chernobyl fallout and from global fallout. The low amounts of Cs-137 found accumulated in the above-ground biomass (mosses, grasses, needles) did not substantially bias the studied radiocaesium balance in the soils. The vertical migration rate of Cs-137 in soils (cm/year) had a tendency to be higher below canopies than below canopy gaps and below pine canopies than below spruce canopies. We expected the current Cs-137 activity concentrations in the individual soil horizons to be related to the studied soil parameters: pH (H2O), pH (CaCl2), content of organic matter and mineral portion and portion of humic and fulvic acid contents (Q(4/6)). However, this was not confirmed. Similarly, we observed a weak tendency toward higher Cs-137 activity in soils below the canopy than in soils below canopy gaps. The available gaps used in our study may have been too small, and they may have been affected by an accumulation of litter and humus containing Cs-137 from the surrounding plots situated below neighbouring canopies.

Název v anglickém jazyce

Long-term retention of Cs-137 in three forest soil types with different soil properties

Popis výsledku anglicky

Current Cs-137 activity concentrations were studied at three localities in individual soil horizons of Stagnosol, Arenic Podzol and Haplic Cambisol soil units in soil blocks with dimensions of 20 x 20 x 40 cm situated below pine canopies (n = 3) and spruce canopies (n = 3), and below small canopy gaps, at least 15 x 15 m in area (n = 3 + 3), which have probably endured since 1986. The main zone of Cs-137 accumulation in all the localities was found to be in the organic horizons (H and F). No significant transport and accumulation of Cs-137 into illuvial soil horizons (Bm, Bs or Bhs, Bv and Bv/IIC) was found. The estimated current total Cs-137 activity concentrations in the soil blocks 40 cm in depth were only slightly higher below the coniferous canopy than they were below nearby canopy gaps. The inventory of Cs-137 in the soils was found to be in accordance with the estimated Cs-137 inputs from the Chernobyl fallout and from global fallout. The low amounts of Cs-137 found accumulated in the above-ground biomass (mosses, grasses, needles) did not substantially bias the studied radiocaesium balance in the soils. The vertical migration rate of Cs-137 in soils (cm/year) had a tendency to be higher below canopies than below canopy gaps and below pine canopies than below spruce canopies. We expected the current Cs-137 activity concentrations in the individual soil horizons to be related to the studied soil parameters: pH (H2O), pH (CaCl2), content of organic matter and mineral portion and portion of humic and fulvic acid contents (Q(4/6)). However, this was not confirmed. Similarly, we observed a weak tendency toward higher Cs-137 activity in soils below the canopy than in soils below canopy gaps. The available gaps used in our study may have been too small, and they may have been affected by an accumulation of litter and humus containing Cs-137 from the surrounding plots situated below neighbouring canopies.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DL - Jaderné odpady, radioaktivní znečištění a kontrola

OECD FORD obor

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Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Environmental Radioactivity

ISSN

0265-931X

e-ISSN

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Svazek periodika

158-159

Číslo periodika v rámci svazku

July 2016

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

102-113

Kód UT WoS článku

000376699100012

EID výsledku v databázi Scopus

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