A COMPARISON OF NATURAL AND FALLOUT RADIOACTIVITY IN ONTARIO SOILS UNDER PINE
Radioactive fallout is strongly concentrated in the organic litter layers of pinewood soils, which exhibit gross beta activities as high as or higher than those of living pine needles. Radioactivity of the ash from litter layers sampled in the spring of 1962, after resumption of shermonuclear-weapon testing by the USSR, was about 12 times that exhibited during the early month of 1961, and about 30 times the natural beta activity before worldwide thermonuclear fallout. Mineral soils sampled during these same periods generally showed relatively slight differences in ash activity. Leaf litter from angiosperm trees was more highly radioactive than litter from gymnosperm trees, on both the ash and dry-weight basis. (Public Health Eng. Abstr., 43: Dec. 1963)
- Research Organization:
- Univ. of Minnesota, Minneapolis
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-18-006955
- OSTI ID:
- 4124608
- Journal Information:
- Canadian Journal of Botany, Journal Name: Canadian Journal of Botany Journal Issue: 9 Vol. 41; ISSN 0008-4026
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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