Abstract
Effects of liming (4000 kg calcium-magnesium carbonate per hectare) and soil preparation (with a disc plow) on 137 C sand Sr uptake of pine saplings (Pinus sylvestris) were studied in a dry heath forest in western Finland. Four treatments were studied: liming, soil preparation, liming followed by soil preparation, and control. The trees were planted in 1987 ; one year after the soil management, on a site contaminated by Chernobyl derived 137 Cs. Sampling of various tree parts and soil was carried out in 1991. Soil preparation increased highly significantly dry mass of the whole tree and branches and needles of C and C+1 year classes, and significantly masses of roots, stem, and older branches and needles. In all these fractions the content of Sr increased significantly. The 137 Cs concentrations in all tree fractions were highest in samples from the control plots, but Sr differed from this pattern. Soil preparation decreased significantly the 137 Cs concentrations in roots and living needles. The changes in 137 Cs and Sr contents in trees may partially be traced back to increased nutrient mobility and root mass and changed root distribution in soil, and also to different relations of Cs-K and Sr-Ca in uptake and translocation processes of trees.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
