Details

Autor(en) / Beteiligte

• McCabe, D.C. (Guelph Univ., Guelph, Ont. (Canada))
• Protz, R
• Tomlin, A.D

Titel

Faunal effects on the distribution of gamma emitting radionuclides in four forested soils

Ist Teil von

• Water, air and soil pollution, 1991-08, Vol.57 (1), p.521-532

Ort / Verlag

Dordrecht: Springer

Erscheinungsjahr

1991

Quelle

SpringerLINK Contemporary (Konsortium Baden-Württemberg)

Beschreibungen/Notizen

• Four forested, well drained surface horizons of soils representing the range of textures located in the Lake Erie Basin of Southern Ontario were sampled in 1 cm increments to a depth of 15 cm. Gamma emitting radionuclides of natural sources, super(40)K, super(214)Bi ( super(238)U daughter), and super(208)Tl ( super(232)Th daughter), are distributed as a function of texture over the 15 cm depth. Increasing clay content results in increased retention of these isotopes. The super(40)K distribution is a result of the amount of organic carbon present. Increased organic carbon results in increased weathering and lower super(40)K values. Differing earthworm activity results in distinct distributions of super(137)Cs, a gamma emitting radionuclide from bomb fallout, within the four soils. Larger numbers and biomass of anecic earthworms in finer textured soils result in a linear distribution of super(137)Cs with depth. Endogeous species in the coarsest textured soil result in little incorporation of super(137)Cs with depth.