title: [Analysis of factors determining the biological availability of 137Cs in forest ecosystem soils].
abstract: On five forest plots varying in species composition of woody plants and soil properties, 137Cs accumulation by vegetation of the forest understorey has been studied. Differences in 137Cs availability for root uptake are shown to be dependent on a vertical distribution of 137Cs content over the soil profile, percentage of exchangeable 137Cs and distribution of plant root systems (fungous mycelium) in soil. A 137Cs-bioavailability index is suggested and its non-linear relationship with 137Cs transfer factors to different plant species in the understorey is shown.
authors.affiliation: Russian Institute of Agricultural Radiology and Agroecology, Obninsk 249020, Russia.
authors.forename: S V
authors.initials: SV
authors.lastname: Fesenko
authors.forename: N I
authors.initials: NI
authors.lastname: Sanzharova
authors.forename: S I
authors.initials: SI
authors.lastname: Spiridonov
authors.forename: N V
authors.initials: NV
authors.lastname: Sukhova
authors.forename: R
authors.initials: R
authors.lastname: Avila
authors.forename: D
authors.initials: D
authors.lastname: Klein
mesh_terms: D001682:Biological Availability; D002588:Cesium Radioisotopes / Q000493:pharmacokinetics*; D017753:Ecosystem; D018517:Plant Roots / Q000378:metabolism; D012990:Soil Pollutants, Radioactive / Q000493:pharmacokinetics*; D014197:Trees
chemical_list: D002588:Cesium Radioisotopes; D012990:Soil Pollutants, Radioactive