Forest (re)vegetation impact on radium-226 cycling in U-mining area

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Forest (re)vegetation impact on radium-226 cycling in U-mining area. / Thiry, Yves; Van Hees, May; Vandenhove, Hildegarde (Peer reviewer).

Biogeochemistry of Trace Elements: Environmental Protection, Remediation and Human Health. Vol. 1 Beijing, China, 2007. p. 449-450.

Research output: Contribution to report/book/conference proceedingsIn-proceedings paperpeer-review

Harvard

Thiry, Y, Van Hees, M & Vandenhove, H 2007, Forest (re)vegetation impact on radium-226 cycling in U-mining area. in Biogeochemistry of Trace Elements: Environmental Protection, Remediation and Human Health. vol. 1, Beijing, China, pp. 449-450, ICOBTE, Beijing, China, 2007-07-15.

APA

Thiry, Y., Van Hees, M., & Vandenhove, H. (2007). Forest (re)vegetation impact on radium-226 cycling in U-mining area. In Biogeochemistry of Trace Elements: Environmental Protection, Remediation and Human Health (Vol. 1, pp. 449-450).

Vancouver

Thiry Y, Van Hees M, Vandenhove H. Forest (re)vegetation impact on radium-226 cycling in U-mining area. In Biogeochemistry of Trace Elements: Environmental Protection, Remediation and Human Health. Vol. 1. Beijing, China. 2007. p. 449-450

Author

Thiry, Yves ; Van Hees, May ; Vandenhove, Hildegarde. / Forest (re)vegetation impact on radium-226 cycling in U-mining area. Biogeochemistry of Trace Elements: Environmental Protection, Remediation and Human Health. Vol. 1 Beijing, China, 2007. pp. 449-450

Bibtex - Download

@inproceedings{cec6579157d94603a0f5cdabda5da219,
title = "Forest (re)vegetation impact on radium-226 cycling in U-mining area",
abstract = "In revegetated contaminated area such as former U-mining sites, the long-term vegetation impact on the radioactivity dissemination is still few documented. Ca is required in large amounts by trees with possible effect on 226Ra uptake. In this study, we compared the Ca and 226Ra redistribution by 37-years Scots pine developped on an afforested U-mining heap and we quantified the recycling dynamics of both elements in terms of annual fluxes. Both elements mainly accumulated in ligneous organs (stem + branches) but results provided further evidence of a preferential retention of 226Ra in stemwood on exchange sites of xylem tissues. The net root uptake of 226Ra amounted to 24 kBq ha-1 y-1, i.e. less than 0.002 % of the NH4-exchangeable 226Ra pool in the soil (0-30 cm). The efficiency of 226Ra uptake by trees was shown to be 400 times less than that of Ca and could be ascribed to the high level of available Ca in the mining debris and the resultant competitive interaction for uptake. The rate of 226Ra redistribution through vegetation was low and largely ruled by soil properties involving a high Ca availability for root uptake which dominates over discrimination effects in favor of 226Ra retention in stemwood.",
keywords = "calcium, cycling, mining sites, pine, phytostabilization, radium",
author = "Yves Thiry and {Van Hees}, May and Hildegarde Vandenhove",
note = "Score = 1; ICOBTE ; Conference date: 15-07-2007 Through 19-07-2007",
year = "2007",
month = jul,
language = "English",
isbn = "978-7-302-15627-7",
volume = "1",
pages = "449--450",
booktitle = "Biogeochemistry of Trace Elements: Environmental Protection, Remediation and Human Health",

}

RIS - Download

TY - GEN

T1 - Forest (re)vegetation impact on radium-226 cycling in U-mining area

AU - Thiry, Yves

AU - Van Hees, May

A2 - Vandenhove, Hildegarde

N1 - Score = 1

PY - 2007/7

Y1 - 2007/7

N2 - In revegetated contaminated area such as former U-mining sites, the long-term vegetation impact on the radioactivity dissemination is still few documented. Ca is required in large amounts by trees with possible effect on 226Ra uptake. In this study, we compared the Ca and 226Ra redistribution by 37-years Scots pine developped on an afforested U-mining heap and we quantified the recycling dynamics of both elements in terms of annual fluxes. Both elements mainly accumulated in ligneous organs (stem + branches) but results provided further evidence of a preferential retention of 226Ra in stemwood on exchange sites of xylem tissues. The net root uptake of 226Ra amounted to 24 kBq ha-1 y-1, i.e. less than 0.002 % of the NH4-exchangeable 226Ra pool in the soil (0-30 cm). The efficiency of 226Ra uptake by trees was shown to be 400 times less than that of Ca and could be ascribed to the high level of available Ca in the mining debris and the resultant competitive interaction for uptake. The rate of 226Ra redistribution through vegetation was low and largely ruled by soil properties involving a high Ca availability for root uptake which dominates over discrimination effects in favor of 226Ra retention in stemwood.

AB - In revegetated contaminated area such as former U-mining sites, the long-term vegetation impact on the radioactivity dissemination is still few documented. Ca is required in large amounts by trees with possible effect on 226Ra uptake. In this study, we compared the Ca and 226Ra redistribution by 37-years Scots pine developped on an afforested U-mining heap and we quantified the recycling dynamics of both elements in terms of annual fluxes. Both elements mainly accumulated in ligneous organs (stem + branches) but results provided further evidence of a preferential retention of 226Ra in stemwood on exchange sites of xylem tissues. The net root uptake of 226Ra amounted to 24 kBq ha-1 y-1, i.e. less than 0.002 % of the NH4-exchangeable 226Ra pool in the soil (0-30 cm). The efficiency of 226Ra uptake by trees was shown to be 400 times less than that of Ca and could be ascribed to the high level of available Ca in the mining debris and the resultant competitive interaction for uptake. The rate of 226Ra redistribution through vegetation was low and largely ruled by soil properties involving a high Ca availability for root uptake which dominates over discrimination effects in favor of 226Ra retention in stemwood.

KW - calcium

KW - cycling

KW - mining sites

KW - pine

KW - phytostabilization

KW - radium

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_82268

UR - http://knowledgecentre.sckcen.be/so2/bibref/4376

M3 - In-proceedings paper

SN - 978-7-302-15627-7

VL - 1

SP - 449

EP - 450

BT - Biogeochemistry of Trace Elements: Environmental Protection, Remediation and Human Health

CY - Beijing, China

T2 - ICOBTE

Y2 - 15 July 2007 through 19 July 2007

ER -

ID: 112085