カテゴリー「ecology・environment」
Author: Bakunov N.A., Bol’shiyanov D.Yu., Makarov A.S.
Reference: Gazette “ВОДНЫЕ РЕСУРСЫ“, St. Petersbourg, 2008
ISSN: 0097-8078
DOI: 10.1134/S0097807808060055
Keywords: 137cs, water bodies, deep lakes
Abstract: The assessment of 137Cs concentration in water based on the model of radionuclide absorption by the bottom sediment of a closed water body is applicable to deep-water lakes with slower water circulation (the time of water exchange exceeding 10 years). The low river runoff from such lakes does not determine their water purification from 137Cs because of the predominance of the process of 137Cs sorption by suspension and bottom sediment. The contamination of a deep-water arctic lake with global 137Cs is reconstructed.
URL: http://link.springer.com/article/10.1134%2FS0097807808060055#
Author: Podolyak A.G., Bogdevich I.M., Timofeev S.F., Grebenshikova N.V.
Reference: Gazette “РАДИАЦИОННАЯ БИОЛОГИЯ. РАДИОЭКОЛОГИЯ “ (Radiation Biology, Radioecology), 2007
ISSN: 0869-8031
DOI: 10.1134/S086980310704008X
Keywords: organic fertilizer, contamination, soil
Abstract: The article is based on agronomic, economic and radiological assessments of the results of long-term studies on the use of organic fertilizers (peat, sapropel, manure, compost torfonavozny) in the soil.
URL: http://elibrary.ru/item.asp?id=9534733
Author: Abramov VI, Rubanovich AV, Shevchenko VA, Shevchenko VV, Grinikh LI.
Reference: Gazette “РАДИАЦИОННАЯ БИОЛОГИЯ. РАДИОЭКОЛОГИЯ “ (Radiation Biology, Radioecology), 2006
ISSN: 0869-8031
DOI: 582:539.1.04 [577 21+575]
Keywords: genetic mutation, plant
Abstract: During 6 years, starting from 1986, the monitoring of the dynamics of the frequency of embryo lethal and of chlorophyll mutations was carried out in arabidopsis populations in areas with different levels of radioactive contamination by the Muller embryo-test in the 30 km of ChNPP. The dose rate of chronic irradiation in the examined areas varied from 0.014 to 17 nA/Kg. Monitoring of the dynamics of the mutation process in natural arabidopsis populations showed the correlation between the level of the mutation process and the dose rate of chronic irradiation. The genetic effects of different levels of radioactive contamination were estimated by determining the frequency of mutations occurred in this generation and by calculating the dose of irradiation of one was found. That the dependence of the mutation frequency on the dose of irradiation presents a power function with a power index less 1, which suggests a higher efficiency of low radiation doses per unit dose. Possible explanations of this phenomenon are considered in the work. The studies of cytogenetic effects in chronically exposed Crepis tectorum populations in the zones of the Chernobyl accident showed that starting from the second year after the Chernobyl disaster there appeared plants with an altered karyotype and their frequency of chromosome aberrations correlates in root meristem cells.
URL: http://www.ncbi.nlm.nih.gov/pubmed/16869157
Author: Mukhamedshin K. E., Bezuglov VK Snytkin GV
Reference: Bulletin of the Moscow State Forest University, 2001
ISSN: 1727-3749
Keywords: zonal-typological system, forest management
URL: http://elibrary.ru/item.asp?id=9308392
Author: Oficerov M.V., Igonina E.V.
Reference: Gazette “ ГЕНЕТИКА” (genetics), 2009
ISSN: 1022-7954
DOI: 10.1134/S1022795409020082
Keywords: Scots pine, contamination, genetics
Abstract: The genetic consequences of irradiation were studied in a Scots pine population from a region contaminated as a result of the Chernobyl meltdown. Mutations of isozyme loci were not detected in seeds collected from trees of the first post-meltdown generation in 2004. The frequency of cells with chromosome aberrations in the root meristem of seedlings grown from the seeds did not differ from the control level. A deviation from the expected ratio 1:1 was observed for some isozyme alleles in endosperms of seeds obtained from heterozygous trees.
URL: http://www.ncbi.nlm.nih.gov/pubmed/19334615
Author: S.I. Spiridonov, S.V. Fesenko, S.A. Geras’kin, V.M. Solomatin, E.I. Karpenko
Reference: Gazette “РАДИАЦИОННАЯ БИОЛОГИЯ. РАДИОЭКОЛОГИЯ “ (Radiation Biology, Radioecology), 2010
ISSN: 0869-8031
DOI: 10.1134/S086980310804005X
Keywords: load of radionuclides in pine trees, dose of exposure, dosimetric models
Abstract: Dosimetric models are designed to assess the exposure dose of woody plants
growing in areas contaminated by long-lived radionuclides. The models are parameterized using data obtained in experimental plots in the south-western districts of the Bryansk region affected by radioactive fallout from the accident at the Chernobyl nuclear power plant. Estimates the dose of exposure in the generative organs of pine trees located in these areas. Describes content of various sources and types of ionized radiation in the formation of loads of radionuclides in the specified objects.
URL: http://elibrary.ru/item.asp?id=11036091
Author: Geras’kin SA, Udalova AA, Dikareva NS, Mozolin EM, Chernonog EV, Prytkova IuS, Dikarev VG, Novikova TA.
Reference: Gazette “РАДИАЦИОННАЯ БИОЛОГИЯ. РАДИОЭКОЛОГИЯ “ (Radiation Biology, Radioecology), 2010
ISSN: 0869-8031
DOI: 10.1134/S0869803110040028
Keywords: plant, radioactivity, destruction of regularities, low level anthropogenic impact
Abstract: The findings from long-term field studies on biological effects in plant populations inhabiting radioactively contaminated territories contrast in levels and compositions of dose-forming radionuclides are presented. Plant populations developing under radioactive impact show enhanced frequencies of gene and chromosome mutations, and their reproductive potential is inferior to reference populations. Even relatively low levels of technogenic impact are able to increase genetic diversity and destroy regularities inherent for intact populations. Chronic radiation exposure from a certain level appears to be an ecological factor changing genetic structure of wild populations. Data presented indicate the presence of adaptation processes in plant populations in territories with technogenic impact. Under ecological stress, there are selection processes for resistance improvement in plant populations. But an appearance and rate of this process can essentially differ in dependence on radioecological conditions.
URL: http://www.ncbi.nlm.nih.gov/pubmed/20968048
Author: Maradukhin I.I., Zhukov E.A., Razdaivodin A.N., Radin A.I., Romashkin D.Yu.
Reference: Gazette “РАДИАЦИОННАЯ БИОЛОГИЯ. РАДИОЭКОЛОГИЯ “ (Radiation Biology, Radioecology), 2009
ISSN: 0869-8031
DOI: 10.1134/S0869803109040183
Keywords: forest, radiological division, radionuclides, rehabilitation, social and economic values
Abstract: Reviews scientific principles of specified radiological division (zoning) of forests contaminated by radionuclides due to the Chernobyl accident. Presents detailed ecological and silvicultural characteristics of radio-ecological regions. Suggests general classification of forest ecosystems on different groups of radioecological stability, based on the duration of rehabilitation of social and economic values and resource potentials of the forests after the radiation exposure.
URL: http://elibrary.ru/item.asp?id=13856733
Author: Perevodsky A.N., Perevodskaya T.V.
Reference: Gazette “РАДИАЦИОННАЯ БИОЛОГИЯ. РАДИОЭКОЛОГИЯ “ (Radiation Biology, Radioecology), 2012
ISSN: 0869-8031
DOI: 10.1134/S0869803112030137
Keywords: forest contamination, 137cs, monitoring, phytomass of pine, various stages of contamination
Abstract: Based on years of research of 137Cs accumulating on above-ground phytomass of pine plantations. Predictive calculations of surface contamination elements of phytomass of pine plantations, after fallout of radioactivities. Optimization of radiation monitoring in forests at different stages after an emergency contamination. Defines three stages in the formation of radio-ecological situation in the woods. Gives proposals for optimization of sampling for radioecological monitoring of forest ecosystems at various stages after radiation accident.
URL: http://elibrary.ru/item.asp?id=17745990
Author: Prister B. S., Biesold H., Deville-Cavelin G.
Reference: Gazette “РАДИАЦИОННАЯ БИОЛОГИЯ. РАДИОЭКОЛОГИЯ “ (Radiation Biology, Radioecology), 2003
ISSN: 0869-8031
Keywords: plant, accumulation, estimation method
Abstract: A method is founded on consideration of soil as three-phase system where soil solution reaction (pH), absorbing capacity (E) and content of organic matter (OM) are the main characteristics. The method of complete estimation of soil properties (CESP) for quantified analysis of radionuclide soil-to-plant TF dependence on soil properties is grounded and proposed. The area of an effective section (relative units)2 calculated as an area of the triangle with apexes lying in co-ordinates of normalised vectors pH, E and OM in three-dimensional space for complete estimation is used. It is shown that the dependence of Cs TF to various crops on CESP can be approximated by equation of power law.
URL: http://elibrary.ru/item.asp?id=17326259
