: материалы временных коллективов / Т.Т. Ефремова , С.П. Ефремов и др. // Известия РАН. Серия географическая. - 2003. - № 3. - С. 36-43. - Библиогр. в конце ст.
Аннотация: В процессе торфообразования распределение по профилю залежи Na, Rb, Cs, Ca, Mg, Sr, Ba регулируется главным образом карбонатным равновесием почвенно-грунтовых вод, а С1 и Вг - избирательным накоплением болотными растениями. Допускается возможность использования этой информации для реконструкции палеоклимата в голоцене. С известной долей вероятности в ходе торфогенеза биогеохимический захват щелочноземельных и щелочных металлов болотными экосистемами отражает климатические флуктуации, связанные с температурой, а накопление галогенов - с фактором увлажнения.
Информация о публикации
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28
Доп.точки доступа:
Ефремов, Станислав Петрович; Efremov S.P.; Efremova T.T.
Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН
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Найдено документов в текущей БД: 60
Биогеохимическая миграция галогенов, щелочных и щелочноземельных металлов в торфяниках голоцена
Geostatistical analysis of the spatial variation of the ash reserves in the litter of bog birch forests in Western Siberia
/ T. T. Efremova [et al.] // Eurasian Soil Sci. - 2013. - Vol. 46, Is. 1. - P51-60, DOI 10.1134/S1064229312120034. - Cited References: 29. - This work was supported by Program no. 26 of the Presidium of the Russian Academy of Sciences Biological Diversity and Project no. 2 of the Siberian Division of the Russian Academy of Sciences.
. - 10. - ISSN 1064-2293
РУБ Soil Science
Аннотация: A typological series of native Betula pubescens Ehrh. dendrocenoses along the channel of a river crossing a bog was studied. The variability of the mineral element reserves is described by geostatistical methods as the sum of a trend, autocorrelation, and random components. The contribution of deterministic and random components has been assessed in the years with average precipitation and in the year of 2007 with high and long-term flooding. The empirical variograms and the parameters of the model variograms are presented. The class of the spatial correlation of the ash reserves is described. A primary cause of the ash content's variability is the specific water regime, which is determined by the following: (i) the abundance and duration of the spring floods responsible for the silt mass brought by the river and (ii) the draining effect of the intrabog river, the distance from which provided the formation in the forest of the ground cover with the specific species composition and ash content. The falloff of the arboreal layer in the bog birch forests formed the fundamental mineral background of the litter.
Полный текст,
WOS,
Scopus
Держатели документа:
[Efremova, T. T.
Sekretenko, O. P.
Avrova, A. F.
Efremov, S. P.] Russian Acad Sci, Sukachev Inst Forest, Siberian Div, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T.T.; Sekretenko, O.P.; Avrova, A.F.; Efremov, S.P.
Рубрики:
SOIL PROPERTIES
VARIABILITY
Кл.слова (ненормированные):
variograms -- typological series -- water regime -- litter
SOIL PROPERTIES
VARIABILITY
Кл.слова (ненормированные):
variograms -- typological series -- water regime -- litter
Аннотация: A typological series of native Betula pubescens Ehrh. dendrocenoses along the channel of a river crossing a bog was studied. The variability of the mineral element reserves is described by geostatistical methods as the sum of a trend, autocorrelation, and random components. The contribution of deterministic and random components has been assessed in the years with average precipitation and in the year of 2007 with high and long-term flooding. The empirical variograms and the parameters of the model variograms are presented. The class of the spatial correlation of the ash reserves is described. A primary cause of the ash content's variability is the specific water regime, which is determined by the following: (i) the abundance and duration of the spring floods responsible for the silt mass brought by the river and (ii) the draining effect of the intrabog river, the distance from which provided the formation in the forest of the ground cover with the specific species composition and ash content. The falloff of the arboreal layer in the bog birch forests formed the fundamental mineral background of the litter.
Полный текст,
WOS,
Scopus
Держатели документа:
[Efremova, T. T.
Sekretenko, O. P.
Avrova, A. F.
Efremov, S. P.] Russian Acad Sci, Sukachev Inst Forest, Siberian Div, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T.T.; Sekretenko, O.P.; Avrova, A.F.; Efremov, S.P.
Factors influencing the spatial pattern of the ash content of bog birch forest litter
[Text] / O. P. Sekretenko [et al.] ; ed.: A Stein, E Pebesma, Pebesma, // 1ST CONFERENCE ON SPATIAL STATISTICS 2011 - MAPPING GLOBAL CHANGE. Ser. Procedia Environmental Sciences : ELSEVIER SCIENCE BV, 2011. - Vol. 3: 1st International Conference on Spatial Statistics - Mapping Global Change (MAR 23-25, 2011, Enschede, NETHERLANDS). - P99-104, DOI 10.1016/j.proenv.2011.02.018. - Cited References: 6
. - 6. - ISBN 1878-0296
РУБ Environmental Sciences + Geography, Physical
Кл.слова (ненормированные):
Forest litter -- ash stock -- western Siberia -- spatial statistics -- geostatistics -- Betula pubescens Ehrh
Аннотация: The ash stock in forest litter influences the fertility of forest soil and should be studied. Litter samples were taken at 70 locations within a 270x60 metre transect in 2004-2007 in the bog birch forest, western Siberia. A geostatistical model with external trend was applied to describe the spatial pattern of the ash mass (kg m(-2)) on the forest floor. Hydrological factors, used as explanatory variables in an external trend equation, account for the main portion of spatial variation (83% and 49% in the years of, respectively, low and high spring flooding). Covariance structure of the data, connected with patterns of vegetation and silt deposits, explains the smaller portion of spatial variation (12% and 38%). The unexplained variation is minor (5% and 13%). (c) 2010 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Spatial Statistics 2011
WOS,
Scopus
Держатели документа:
[Sekretenko, O. P.
Efremova, T. T.
Avrova, A. F.
Efremov, S. P.] Russian Acad Sci, Siberian Branch, Sukachev Inst Forest, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Sekretenko, O.P.; Efremova, T.T.; Avrova, A.F.; Efremov, S.P.; Stein, A \ed.\; Pebesma, E \ed.\; Pebesma, \ed.\
Кл.слова (ненормированные):
Forest litter -- ash stock -- western Siberia -- spatial statistics -- geostatistics -- Betula pubescens Ehrh
Аннотация: The ash stock in forest litter influences the fertility of forest soil and should be studied. Litter samples were taken at 70 locations within a 270x60 metre transect in 2004-2007 in the bog birch forest, western Siberia. A geostatistical model with external trend was applied to describe the spatial pattern of the ash mass (kg m(-2)) on the forest floor. Hydrological factors, used as explanatory variables in an external trend equation, account for the main portion of spatial variation (83% and 49% in the years of, respectively, low and high spring flooding). Covariance structure of the data, connected with patterns of vegetation and silt deposits, explains the smaller portion of spatial variation (12% and 38%). The unexplained variation is minor (5% and 13%). (c) 2010 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Spatial Statistics 2011
WOS,
Scopus
Держатели документа:
[Sekretenko, O. P.
Efremova, T. T.
Avrova, A. F.
Efremov, S. P.] Russian Acad Sci, Siberian Branch, Sukachev Inst Forest, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Sekretenko, O.P.; Efremova, T.T.; Avrova, A.F.; Efremov, S.P.; Stein, A \ed.\; Pebesma, E \ed.\; Pebesma, \ed.\
Correlation between the morphogenetic types of litter and their properties in bog birch forests
[Text] / T. T. Efremova, S. P. Efremov, A. F. Avrova // Eurasian Soil Sci. - 2010. - Vol. 43, Is. 8. - P858-866, DOI 10.1134/S106422931008003X. - Cited References: 11. - This work was supported by the Russian Foundation for Basic Research, project no. 08-04-92501.
. - 9. - ISSN 1064-2293
РУБ Soil Science
Аннотация: A formalized arrangement of morphogenetic types of litter according to the physicochemical parameters provided their significant grouping in three genetic associations. The litter group (highly decomposed + moderately decomposed) is confined to the tall-grass group of bog birch forests. The rhizomatous (roughly decomposed) litter is formed in the sedge-reed grass bog birch forests. The litter group (peaty + peatified + peat) is associated with the bog-herbaceous-moss group of forest types. The genetic associations of the litters (a) reliably characterize the edaphic conditions of bog birch forests and (b)correspond to formation of the peat of certain ecological groups. We found highly informative the acid-base parameters, the exchangeable cations (Ca(2+) + Mg(2+)) and the total potential acidity, which differentiated the genetic associations of litter practically with 100% probability. The expediency of studying litters under groups of forest types rather than under separate types of bog birch forests was demonstrated.
Полный текст,
WOS,
Scopus
Держатели документа:
[Efremova, T. T.
Efremov, S. P.
Avrova, A. F.] Russian Acad Sci, Sukachev Inst Forestry, Siberian Div, Akad Gorodok, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T.T.; Efremov, S.P.; Avrova, A.F.
Аннотация: A formalized arrangement of morphogenetic types of litter according to the physicochemical parameters provided their significant grouping in three genetic associations. The litter group (highly decomposed + moderately decomposed) is confined to the tall-grass group of bog birch forests. The rhizomatous (roughly decomposed) litter is formed in the sedge-reed grass bog birch forests. The litter group (peaty + peatified + peat) is associated with the bog-herbaceous-moss group of forest types. The genetic associations of the litters (a) reliably characterize the edaphic conditions of bog birch forests and (b)correspond to formation of the peat of certain ecological groups. We found highly informative the acid-base parameters, the exchangeable cations (Ca(2+) + Mg(2+)) and the total potential acidity, which differentiated the genetic associations of litter practically with 100% probability. The expediency of studying litters under groups of forest types rather than under separate types of bog birch forests was demonstrated.
Полный текст,
WOS,
Scopus
Держатели документа:
[Efremova, T. T.
Efremov, S. P.
Avrova, A. F.] Russian Acad Sci, Sukachev Inst Forestry, Siberian Div, Akad Gorodok, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T.T.; Efremov, S.P.; Avrova, A.F.
Forests and swamps of Siberia in the global carbon cycle
[Text] / E. A. Vaganova [et al.] // Contemp. Probl. Ecol. - 2008. - Vol. 1, Is. 2. - P168-182, DOI 10.1134/S1995425508020021. - Cited References: 67
. - 15. - ISSN 1995-4255
РУБ Ecology
Аннотация: Results of measurements and calculations of carbon budget parameters of forests and swamps of Siberia are reported. The zonal variability of reserves (and an increment in reserves) of carbon in forest and swamp ecosystems is characterized, carbon dioxide fluxes are measured directly by means of microeddy pulsations, and an uncertainty brought into the calculation of carbon budget parameters by forest fires is estimated.
Полный текст,
WOS
Держатели документа:
[Vaganova, E. A.
Vedrova, E. F.
Verkhovets, S. V.
Efremov, S. P.
Efremova, T. T.
Onuchin, A. A.
Sukhinin, A. I.
Shibistova, O. B.] RAS, Siberian Branch, Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Kruglov, V. B.] Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia
Доп.точки доступа:
Vaganov, E.A.; Vedrova, E.F.; Verkhovets, S.V.; Efremov, S.P.; Efremova, T.T.; Kruglov, V.B.; Onuchin, A.A.; Sukhinin, A.I.; Shibistova, O.B.
Рубрики:
BLACK SPRUCE FOREST
PINE FOREST
NET CARBON
DIOXIDE
RESPIRATION
EXCHANGE
BALANCE
CO2
PRODUCTIVITY
ECOSYSTEMS
BLACK SPRUCE FOREST
PINE FOREST
NET CARBON
DIOXIDE
RESPIRATION
EXCHANGE
BALANCE
CO2
PRODUCTIVITY
ECOSYSTEMS
Аннотация: Results of measurements and calculations of carbon budget parameters of forests and swamps of Siberia are reported. The zonal variability of reserves (and an increment in reserves) of carbon in forest and swamp ecosystems is characterized, carbon dioxide fluxes are measured directly by means of microeddy pulsations, and an uncertainty brought into the calculation of carbon budget parameters by forest fires is estimated.
Полный текст,
WOS
Держатели документа:
[Vaganova, E. A.
Vedrova, E. F.
Verkhovets, S. V.
Efremov, S. P.
Efremova, T. T.
Onuchin, A. A.
Sukhinin, A. I.
Shibistova, O. B.] RAS, Siberian Branch, Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Kruglov, V. B.] Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia
Доп.точки доступа:
Vaganov, E.A.; Vedrova, E.F.; Verkhovets, S.V.; Efremov, S.P.; Efremova, T.T.; Kruglov, V.B.; Onuchin, A.A.; Sukhinin, A.I.; Shibistova, O.B.
The assessment of the organic matter state in drained peat soils as related to the environmental conditions by the methods of multidimensional statistics
[Text] / T. T. Efremova, T. M. Ovchinnikova // Eurasian Soil Sci. - 2007. - Vol. 40, Is. 12. - P1298-1307, DOI 10.1134/S106422930712006X. - Cited References: 11
. - 10. - ISSN 1064-2293
РУБ Soil Science
Аннотация: The specificity of the group and fraction composition of the organic matter in peat soils drained to a different extent that have developed for a 20-to 25-year period of hydro-and forest amelioration was characterized using the methods of multidimensional statistics. The differences in the organic matter of the soils studied are mainly determined by the contents of humic and fulvic acid of fractions 1 and 3, as well as of hemicelluloses and cellulose. The degree and depth of the humification are inversely related to the soil moisture and directly related to the peroxidase activity.
Полный текст,
WOS,
Scopus
Держатели документа:
[Efremova, T. T.
Ovchinnikova, T. M.] Russian Acad Sci, Sukachev Inst Forestry, Siberian Branch, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T.T.; Ovchinnikova, T.M.
Аннотация: The specificity of the group and fraction composition of the organic matter in peat soils drained to a different extent that have developed for a 20-to 25-year period of hydro-and forest amelioration was characterized using the methods of multidimensional statistics. The differences in the organic matter of the soils studied are mainly determined by the contents of humic and fulvic acid of fractions 1 and 3, as well as of hemicelluloses and cellulose. The degree and depth of the humification are inversely related to the soil moisture and directly related to the peroxidase activity.
Полный текст,
WOS,
Scopus
Держатели документа:
[Efremova, T. T.
Ovchinnikova, T. M.] Russian Acad Sci, Sukachev Inst Forestry, Siberian Branch, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T.T.; Ovchinnikova, T.M.
Oxidoreductase activity of peat soils as an indicator of the degree of biochemical transformation of drained and forested bogs in West Siberia
[Text] / T. T. Efremova, T. M. Ovchinnikova // Biol. Bull. - 2007. - Vol. 34, Is. 3. - P297-302, DOI 10.1134/S1062359007030132. - Cited References: 12
. - 6. - ISSN 1062-3590
РУБ Biology
Аннотация: Multivariate analysis unambiguously demonstrated the differentiation of oxidoreductase activity (catalase, peroxidase, and dehydrogenase) in peat soils after a 20-25-year period of bog drainage and afforestation. The enzyme activity depended on the drainage depth. A statistical model has been developed to predict the degree of humification of peat organic matter from peroxidase activity and moisture of drained soils. Soil peroxidase activity can be an important indicator of the degree of biochemical transformation of drained and forested bogs.
Полный текст,
WOS,
Scopus
Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forest, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T.T.; Ovchinnikova, T.M.
Аннотация: Multivariate analysis unambiguously demonstrated the differentiation of oxidoreductase activity (catalase, peroxidase, and dehydrogenase) in peat soils after a 20-25-year period of bog drainage and afforestation. The enzyme activity depended on the drainage depth. A statistical model has been developed to predict the degree of humification of peat organic matter from peroxidase activity and moisture of drained soils. Soil peroxidase activity can be an important indicator of the degree of biochemical transformation of drained and forested bogs.
Полный текст,
WOS,
Scopus
Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forest, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T.T.; Ovchinnikova, T.M.
Interpretation of radiocarbon data on the age of different structural elements of a naturally drained peatland
[Text] / T. T. Efremova, S. P. Efremov, L. A. Orlova // Eurasian Soil Sci. - 2003. - Vol. 36, Is. 10. - P1037-1044. - Cited References: 25
. - 8. - ISSN 1064-2293
РУБ Soil Science
Аннотация: The degree of aggregation of peat substrate and the size of structural elements can be used to distinguish between different stages of a peatland evolution and characterize relic features in the profile of modern peat soil. Carbon fractions separated from different aggregates are indicative of the age of peat accumulated in the period of active growth of the peatland and of the age of peat transformed during the peatland drying. On the basis of these data, annual rates of peat growth at different evolution stages can be determined, as well as the rates of organic carbon sequestration and the amount of peat forming from plant remains.
WOS,
Scopus
Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia
Russian Acad Sci, Siberian Div, Joint Inst Geol Geophys & Mineral, Novosibirsk 630090, Russia
Доп.точки доступа:
Efremova, T.T.; Efremov, S.P.; Orlova, L.A.
Аннотация: The degree of aggregation of peat substrate and the size of structural elements can be used to distinguish between different stages of a peatland evolution and characterize relic features in the profile of modern peat soil. Carbon fractions separated from different aggregates are indicative of the age of peat accumulated in the period of active growth of the peatland and of the age of peat transformed during the peatland drying. On the basis of these data, annual rates of peat growth at different evolution stages can be determined, as well as the rates of organic carbon sequestration and the amount of peat forming from plant remains.
WOS,
Scopus
Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia
Russian Acad Sci, Siberian Div, Joint Inst Geol Geophys & Mineral, Novosibirsk 630090, Russia
Доп.точки доступа:
Efremova, T.T.; Efremov, S.P.; Orlova, L.A.
Biogeochemistry of fe, Mn, Cr, Ni, Co, Ti, V, Mo, Ta, W, and U in a low moor peat deposit of the Ob'-Tom' interfluve
[Text] / T. T. Efremova [et al.] // Eurasian Soil Sci. - 2003. - Vol. 36, Is. 5. - P501-510. - Cited References: 25
. - 10. - ISSN 1064-2293
РУБ Soil Science
Аннотация: No accumulation of heavy metals was revealed in the deep (7.5 m) central zone of a eutrophic peatbog. Ti and W are the most dispersed elements in the peat deposit; Fe, Mo, and Mn are the most accumulated elements. The distribution of heavy metals during peat genesis depends on the quality of sorption humus barriers, and the redox zonality of the peat deposit and, hence, is indicative of the redox stages of boo evolution. Mo is a universal indicator element; its distribution in the peat profile clearly differentiates the redox conditions in both oxidative and reductive environments.
WOS,
Scopus
Держатели документа:
Russian Acad Sci, Sukachev Inst Forestry, Siberian Div, Krasnoyarsk 660036, Russia
Russian Acad Sci, Inst Chem Kinet & Combust, Siberian Div, Novosibirsk 630090, Russia
Joint Inst Nucl Res, Dubna 141980, Moscow Oblast, Russia
Доп.точки доступа:
Efremova, T.T.; Efremov, S.P.; Kutsenogii, K.P.; Onuchin, A.A.; Peresedov, V.F.
Аннотация: No accumulation of heavy metals was revealed in the deep (7.5 m) central zone of a eutrophic peatbog. Ti and W are the most dispersed elements in the peat deposit; Fe, Mo, and Mn are the most accumulated elements. The distribution of heavy metals during peat genesis depends on the quality of sorption humus barriers, and the redox zonality of the peat deposit and, hence, is indicative of the redox stages of boo evolution. Mo is a universal indicator element; its distribution in the peat profile clearly differentiates the redox conditions in both oxidative and reductive environments.
WOS,
Scopus
Держатели документа:
Russian Acad Sci, Sukachev Inst Forestry, Siberian Div, Krasnoyarsk 660036, Russia
Russian Acad Sci, Inst Chem Kinet & Combust, Siberian Div, Novosibirsk 630090, Russia
Joint Inst Nucl Res, Dubna 141980, Moscow Oblast, Russia
Доп.точки доступа:
Efremova, T.T.; Efremov, S.P.; Kutsenogii, K.P.; Onuchin, A.A.; Peresedov, V.F.
Accumulation of Cs-137 in peatbogs on the Ob and Tom' river interfluve
[Text] / T. T. Efremova [et al.] // Eurasian Soil Sci. - 2002. - Vol. 35, Is. 1. - P91-98. - Cited References: 22
. - 8. - ISSN 1064-2293
РУБ Soil Science
Аннотация: The migration of Cs-137 into deep peat layers is mainly determined by long-term annual fluctuations in the ground-water level and depends considerably on the microrelief of the bog surface. Radiocesium was found to be retained selectively by humic and fulvic acids of the first (0.1 N NaOH-extractable) fraction. A close correlation of cesium retention with the ash content in peat was observed. The accumulation of Cs-137 in root-inhabited horizons is enhanced by soil biota. The level of contamination of oligotrophic peatbogs corresponds to the background cesium concentrations in mineral soils of Western Siberia.
WOS,
Scopus
Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia
Russian Acad Sci, Siberian Div, Joint Inst Geol Geophys & Mineral, Novosibirsk 630090, Russia
Доп.точки доступа:
Efremova, T.T.; Sukhorukov, F.V.; Efremov, S.P.; Budashkina, V.V.
Аннотация: The migration of Cs-137 into deep peat layers is mainly determined by long-term annual fluctuations in the ground-water level and depends considerably on the microrelief of the bog surface. Radiocesium was found to be retained selectively by humic and fulvic acids of the first (0.1 N NaOH-extractable) fraction. A close correlation of cesium retention with the ash content in peat was observed. The accumulation of Cs-137 in root-inhabited horizons is enhanced by soil biota. The level of contamination of oligotrophic peatbogs corresponds to the background cesium concentrations in mineral soils of Western Siberia.
WOS,
Scopus
Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia
Russian Acad Sci, Siberian Div, Joint Inst Geol Geophys & Mineral, Novosibirsk 630090, Russia
Доп.точки доступа:
Efremova, T.T.; Sukhorukov, F.V.; Efremov, S.P.; Budashkina, V.V.
Nitrogen in Russian bogs
[Text] / T. T. Efremova, S. P. Efremov, N. V. Melent'eva // Eurasian Soil Sci. - 2000. - Vol. 33, Is. 9. - P934-946. - Cited References: 64
. - 13. - ISSN 1064-2293
РУБ Soil Science
Аннотация: The nitrogen pool in Russian peatlands reaches 4.69 x 10(9) t. Half of this amount is stored in humic substances (mainly, in humic acids) of peat. The nitrogen of relatively stable compounds (mainly, the humin nitrogen) constitutes about 1.8 x 10(9) t. Easily hydrolyzable and mineral nitrogen compounds constitute 9.7 and 1.8% of the total nitrogen pool, respectively. Most of the nitrogen in eutrophic bogs is bound with humic substances, while that of oligotrophic peat is represented by poorly hydrolyzable and nonhydrolyzable forms. The pool of water-soluble nitrogen constitutes 20.3 x 10(6) t, or 0.43% of the total nitrogen reserve. In the case of global warming, eutrophic and mesotrophic bogs can become an important source of ammonia emission to the atmosphere.
WOS,
Scopus
Держатели документа:
Russian Acad Sci, Sukachev Inst Forestry, Siberian Div, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T.T.; Efremov, S.P.; Melent'eva, N.V.
Рубрики:
SOILS
SOILS
Аннотация: The nitrogen pool in Russian peatlands reaches 4.69 x 10(9) t. Half of this amount is stored in humic substances (mainly, in humic acids) of peat. The nitrogen of relatively stable compounds (mainly, the humin nitrogen) constitutes about 1.8 x 10(9) t. Easily hydrolyzable and mineral nitrogen compounds constitute 9.7 and 1.8% of the total nitrogen pool, respectively. Most of the nitrogen in eutrophic bogs is bound with humic substances, while that of oligotrophic peat is represented by poorly hydrolyzable and nonhydrolyzable forms. The pool of water-soluble nitrogen constitutes 20.3 x 10(6) t, or 0.43% of the total nitrogen reserve. In the case of global warming, eutrophic and mesotrophic bogs can become an important source of ammonia emission to the atmosphere.
WOS,
Scopus
Держатели документа:
Russian Acad Sci, Sukachev Inst Forestry, Siberian Div, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T.T.; Efremov, S.P.; Melent'eva, N.V.
The reserves and forms of carbon compounds in bog ecosystems of Russia
[Text] / T. T. Efremova, S. P. Efremov, N. V. Melent'eva // Eurasian Soil Sci. - 1997. - Vol. 30, Is. 12. - P1318-1325. - Cited References: 44
. - 8. - ISSN 1064-2293
РУБ Soil Science
Аннотация: The reserves of carbon in peat deposits and peaty and peat bog soils of Russia comprise 44.2 Gt C of humic substances (37.3% of the total reserve of C), 44.7 Gt C (37.8%) of insoluble residue, and 21.1 Gt C (17.8%) of polysaccharides, The carbon pool of humic acids constitutes 25.0 Gt and that of fulvic acids reaches 19.1 Gt. Humic acids predominate in low-moor peat, whereas fulvic acids predominate in high-moor peat. Transitional pear deposits contain approximately equal amounts of fulvic and humic acids. About 89-91% of the carbon of humic substances in different types of peat is represented by heterogeneous complexes of the first and third fractions.
WOS,
Scopus
Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forestry, Akademgorodok 660036, Krasnoyarsk, Russia
Доп.точки доступа:
Efremova, T.T.; Efremov, S.P.; Melent'eva, N.V.
Аннотация: The reserves of carbon in peat deposits and peaty and peat bog soils of Russia comprise 44.2 Gt C of humic substances (37.3% of the total reserve of C), 44.7 Gt C (37.8%) of insoluble residue, and 21.1 Gt C (17.8%) of polysaccharides, The carbon pool of humic acids constitutes 25.0 Gt and that of fulvic acids reaches 19.1 Gt. Humic acids predominate in low-moor peat, whereas fulvic acids predominate in high-moor peat. Transitional pear deposits contain approximately equal amounts of fulvic and humic acids. About 89-91% of the carbon of humic substances in different types of peat is represented by heterogeneous complexes of the first and third fractions.
WOS,
Scopus
Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forestry, Akademgorodok 660036, Krasnoyarsk, Russia
Доп.точки доступа:
Efremova, T.T.; Efremov, S.P.; Melent'eva, N.V.
Pyrogenic transformation of organic matter in soils of forest bogs
[Text] / T. T. Efremova, S. P. Efremov // Eurasian Soil Sci. - 2006. - Vol. 39, Is. 12. - P1297-1305, DOI 10.1134/S1064229306120039. - Cited References: 31
. - 9. - ISSN 1064-2293
РУБ Soil Science
Аннотация: Natural fires on forest bogs significantly affect all the groups and fractions of peat organic matter. The type and intensity of the fires are responsible for the depth of the pyrogenic transformation of peat. In the course of thermal destruction of peat organic matter, humus substances (humic acids in particular) are accumulated, which leads to changes in the type of humus; the humus reserves may increase by 1.5-8 times. Several ways of the formation of humus components related to the intensity of a fire are suggested. The regressive evolution of bog ecosystems caused by fires is a reversible process. The humus status of pyrogenically transformed horizons and their morphology are preserved within the peat deposit as a relic characteristic of the discrete metamorphosis of the soils.
WOS,
Полный текст,
Scopus
Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T.T.; Efremov, S.P.
Аннотация: Natural fires on forest bogs significantly affect all the groups and fractions of peat organic matter. The type and intensity of the fires are responsible for the depth of the pyrogenic transformation of peat. In the course of thermal destruction of peat organic matter, humus substances (humic acids in particular) are accumulated, which leads to changes in the type of humus; the humus reserves may increase by 1.5-8 times. Several ways of the formation of humus components related to the intensity of a fire are suggested. The regressive evolution of bog ecosystems caused by fires is a reversible process. The humus status of pyrogenically transformed horizons and their morphology are preserved within the peat deposit as a relic characteristic of the discrete metamorphosis of the soils.
WOS,
Полный текст,
Scopus
Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T.T.; Efremov, S.P.
Multiparametric analysis of soil properties in the drained forest bogs of Western Siberia
[Text] / T. T. Efremova, T. M. Ovchinnikova, V. G. Sukhovol'skii // Eurasian Soil Sci. - 2006. - Vol. 39, Is. 6. - P588-596, DOI 10.1134/S1064229306060020. - Cited References: 26
. - 9. - ISSN 1064-2293
РУБ Soil Science
Аннотация: The application of multiparametric statistical methods has confirmed that peat soils are different in the degree of their drainage and properties because of their modification during a 20 - 25 year period of artificial drainage operation. The following sequence represents the relative significance of the contribution to the soil changes of the parameters studied: groundwater table air capacity pH T-0 Eh water-soluble: C Fe3+ and the activity of soil oxidoreductases in the following sequence: peroxidase catalase dehydrogenase. The necessity to supplement the substantive - genetic principle of the classification of drained peat soils with characterization of their water regime is substantiated.
Полный текст,
WOS,
Scopus
Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T.T.; Ovchinnikova, T.M.; Sukhovol'skii, V.G.
Аннотация: The application of multiparametric statistical methods has confirmed that peat soils are different in the degree of their drainage and properties because of their modification during a 20 - 25 year period of artificial drainage operation. The following sequence represents the relative significance of the contribution to the soil changes of the parameters studied: groundwater table air capacity pH T-0 Eh water-soluble: C Fe3+ and the activity of soil oxidoreductases in the following sequence: peroxidase catalase dehydrogenase. The necessity to supplement the substantive - genetic principle of the classification of drained peat soils with characterization of their water regime is substantiated.
Полный текст,
WOS,
Scopus
Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T.T.; Ovchinnikova, T.M.; Sukhovol'skii, V.G.
Stages of litter transformation in bog birch forests
[Text] / T. T. Efremova [et al.] // Eurasian Soil Sci. - 2009. - Vol. 42, Is. 10. - P1120-1129, DOI 10.1134/S1064229309100068. - Cited References: 13. - This study was supported by the Russian Foundation for Basic Research, project no. 08-04-92501.
. - 10. - ISSN 1064-2293
РУБ Soil Science
Аннотация: In the litters (peaty, weakly decomposed, and strongly decomposed) of bog birch forests, the biochemical transformation of plant material includes several discrete stages. The best prediction of the decomposition stages is the set of indices characterizing the humus status of the soils: the C/N ratio, (I HA pound + I FA) pound/C(polysaccharides), and the contents of humic and fulvic acids of fraction 1 in the groups of plant debris of different sizes. The discrimination of the litters according to the level of the biochemical transformation of the organic residues was observed when using the (I HA pound + I FA) pound/C(polysaccharides) ratio, which is 6.3 in the peaty litter and 11.2 and 18.4 in the weakly decomposed and strongly decomposed litters, respectively. The biochemical classification of litters in the bog birch forests is in agreement with the morphological classification of litters.
Полный текст,
WOS,
Scopus
Держатели документа:
[Efremova, T. T.
Avrova, A. F.
Efremov, S. P.
Melent'eva, N. V.] Russian Acad Sci, Siberian Branch, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T.T.; Avrova, A.F.; Efremov, S.P.; Melent'eva, N.V.; Russian Foundation for Basic Research [08-04-92501]
Аннотация: In the litters (peaty, weakly decomposed, and strongly decomposed) of bog birch forests, the biochemical transformation of plant material includes several discrete stages. The best prediction of the decomposition stages is the set of indices characterizing the humus status of the soils: the C/N ratio, (I HA pound + I FA) pound/C(polysaccharides), and the contents of humic and fulvic acids of fraction 1 in the groups of plant debris of different sizes. The discrimination of the litters according to the level of the biochemical transformation of the organic residues was observed when using the (I HA pound + I FA) pound/C(polysaccharides) ratio, which is 6.3 in the peaty litter and 11.2 and 18.4 in the weakly decomposed and strongly decomposed litters, respectively. The biochemical classification of litters in the bog birch forests is in agreement with the morphological classification of litters.
Полный текст,
WOS,
Scopus
Держатели документа:
[Efremova, T. T.
Avrova, A. F.
Efremov, S. P.
Melent'eva, N. V.] Russian Acad Sci, Siberian Branch, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T.T.; Avrova, A.F.; Efremov, S.P.; Melent'eva, N.V.; Russian Foundation for Basic Research [08-04-92501]
Formalized analysis of associativity of morphogenetic types and humus condition of ground litter in marsh birch forests
[Text] / T. T. Efremova, A. F. Avrova, S. P. Efremov // Contemp. Probl. Ecol. - 2013. - Vol. 6, Is. 5. - P569-577, DOI 10.1134/S199542551305003X. - Cited References: 21. - This work was supported by the Russian Foundation for Basic Research, project no. 08-04-92501
. - 9. - ISSN 1995-4255
РУБ Ecology
Аннотация: There are six morphogenetic types of forest ground litter in the gradient of big grass-sphagnous-dead litter marsh birch forest: deeply degraded litter, half degraded litter, rhizomatous litter (coarsely degraded), peaty litter, turfy-formed litter, and turfy litter. The specificity of their biochemical transformations is caused by the accumulation of humic acids (HA), especially of the first fraction (HA-1), alongside the relatively steady background formation of fulvic acids. The C/N value suggests that the intensity of HA-1 formation is closely associated with the biological activity of the substrate. However, the indistinct difference of these parameters in the forestry-morphological types of litters limits their diagnostic reliability. Grouped biochemical types of litters, such as "soft" (half- and deeply degraded), "intermediate" (rhizomatous, peaty and turfy-formed), and "coarse" (mossy), are considerably discriminated by both the C/N ratio (20, 30, 40) and the level of HA-1 (14, 10, and 6%) respectively.
WOS,
Полный текст,
Scopus
Держатели документа:
[Efremova, T. T.
Avrova, A. F.
Efremov, S. P.] Russian Acad Sci, Siberian Branch, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T. T.; Avrova, A. F.; Аврова, Ада Федоровна; Efremov, S. P.; Russian Foundation for Basic Research [08-04-92501]
Рубрики:
ECOSYSTEMS
DYNAMICS
Кл.слова (ненормированные):
marsh birch forests -- litter types -- fraction-group composition of the organic matter
ECOSYSTEMS
DYNAMICS
Кл.слова (ненормированные):
marsh birch forests -- litter types -- fraction-group composition of the organic matter
Аннотация: There are six morphogenetic types of forest ground litter in the gradient of big grass-sphagnous-dead litter marsh birch forest: deeply degraded litter, half degraded litter, rhizomatous litter (coarsely degraded), peaty litter, turfy-formed litter, and turfy litter. The specificity of their biochemical transformations is caused by the accumulation of humic acids (HA), especially of the first fraction (HA-1), alongside the relatively steady background formation of fulvic acids. The C/N value suggests that the intensity of HA-1 formation is closely associated with the biological activity of the substrate. However, the indistinct difference of these parameters in the forestry-morphological types of litters limits their diagnostic reliability. Grouped biochemical types of litters, such as "soft" (half- and deeply degraded), "intermediate" (rhizomatous, peaty and turfy-formed), and "coarse" (mossy), are considerably discriminated by both the C/N ratio (20, 30, 40) and the level of HA-1 (14, 10, and 6%) respectively.
WOS,
Полный текст,
Scopus
Держатели документа:
[Efremova, T. T.
Avrova, A. F.
Efremov, S. P.] Russian Acad Sci, Siberian Branch, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T. T.; Avrova, A. F.; Аврова, Ада Федоровна; Efremov, S. P.; Russian Foundation for Basic Research [08-04-92501]
Seasonal oxidoreductase activity in reclaimed peat soils in connection with hydrothermal conditions of environment
[Text] / T. T. Efremova, T. M. Ovchinnikova // Contemp. Probl. Ecol. - 2008. - Vol. 1, Is. 3. - P346-352, DOI 10.1134/S1995425508030090. - Cited References: 19. - The work was supported by the Russian Foundation for Basic Research (grant 05-04-48517).
. - 7. - ISSN 1995-4255
РУБ Ecology
Аннотация: Under the conditions of southern taiga in West Siberia, the seasonal activities of catalase and anaerobic dehydrogenase in the reclaimed forest peat soil are the highest within the moisture range 20-70% SW, with the optimal values recorded for 40-50 (60)% in the soil heated to 10-20 degrees C. At a temperature of 10-15 degrees C, which is prevailing during the warm season, a parabolic-type relationship between the enzymatic activity and moisture content (10-100% SW) specifies a slow change in the oxidoreductase capacity of soil under these hydrothermal conditions. The seasonal catalase and anaerobic dehydrogenase activities of peat soil are linearly positively correlated with each other by 90-98%.
Полный текст,
WOS
Держатели документа:
[Efremova, T. T.
Ovchinnikova, T. M.] RAS, Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T.T.; Ovchinnikova, T.M.
Аннотация: Under the conditions of southern taiga in West Siberia, the seasonal activities of catalase and anaerobic dehydrogenase in the reclaimed forest peat soil are the highest within the moisture range 20-70% SW, with the optimal values recorded for 40-50 (60)% in the soil heated to 10-20 degrees C. At a temperature of 10-15 degrees C, which is prevailing during the warm season, a parabolic-type relationship between the enzymatic activity and moisture content (10-100% SW) specifies a slow change in the oxidoreductase capacity of soil under these hydrothermal conditions. The seasonal catalase and anaerobic dehydrogenase activities of peat soil are linearly positively correlated with each other by 90-98%.
Полный текст,
WOS
Держатели документа:
[Efremova, T. T.
Ovchinnikova, T. M.] RAS, Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Efremova, T.T.; Ovchinnikova, T.M.
Biogeochemical migration of heavy metals, Ti, V, Mo, Ta, W, and U, in the profile of a low-laid peatbog in the country between the Ob and Tom rivers
[Text] / T. T. Efremova [et al.] // J. Radioanal. Nucl. Chem. - 2003. - Vol. 256, Is. 1. - P143-148, DOI 10.1023/A:1023372630804. - Cited References: 15
. - 6. - ISSN 0236-5731
РУБ Chemistry, Analytical + Chemistry, Inorganic & Nuclear + Nuclear Science & Technology
Аннотация: Biogeochemical migration of heavy metals in the course of marsh formation is mainly determined by physical-chemical processes, such as the oxidation-reduction zonality of the peatbog thickness and the state of humous substances (the quality of humus adsorptive barriers). In the process of peatbog formation V, U, Ta are the weakly captured elements while Mo is captured to a relatively higher extent. Elements as Ti and W are found in separate layers. No technogenic degradation of the marsh ecosystem in the Ob and Tom has been observed.
WOS,
Полный текст,
Scopus
Держатели документа:
RAS, Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia
RAS, Inst Chem Kinet & Combust, Siberian Branch, Novosibirsk 630090, Russia
Joint Inst Nucl Res, Frank Lab Neutron Phys, Dubna 141980, Moscow Region, Russia
Доп.точки доступа:
Efremova, T.T.; Efremov, S.P.; Koutsenogii, K.P.; Peresedov, V.F.
Аннотация: Biogeochemical migration of heavy metals in the course of marsh formation is mainly determined by physical-chemical processes, such as the oxidation-reduction zonality of the peatbog thickness and the state of humous substances (the quality of humus adsorptive barriers). In the process of peatbog formation V, U, Ta are the weakly captured elements while Mo is captured to a relatively higher extent. Elements as Ti and W are found in separate layers. No technogenic degradation of the marsh ecosystem in the Ob and Tom has been observed.
WOS,
Полный текст,
Scopus
Держатели документа:
RAS, Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia
RAS, Inst Chem Kinet & Combust, Siberian Branch, Novosibirsk 630090, Russia
Joint Inst Nucl Res, Frank Lab Neutron Phys, Dubna 141980, Moscow Region, Russia
Доп.точки доступа:
Efremova, T.T.; Efremov, S.P.; Koutsenogii, K.P.; Peresedov, V.F.
Biogeochemical migration of metals of the iron group during the peatbog accumulation in the eutrophic marsh of Western Siberia
[Text] / T. T. Efremova [et al.] // J. Radioanal. Nucl. Chem. - 2001. - Vol. 247, Is. 2. - P419-424, DOI 10.1023/A:1006738609415. - Cited References: 15
. - 6. - ISSN 0236-5731
РУБ Chemistry, Analytical + Chemistry, Inorganic & Nuclear + Nuclear Science & Technology
Аннотация: In a eutrophic marsh. Fe. Mn. Ni. and Co are the elements of moderate biological capture and Cr is the element of weak biological capture. Over the history of the peatbog formation migration of elements is determined by the oxidation-reduction zonality of the peatbog thickness, the quality of humous barriers. and the carbonate equilibrium in the stagnant waters. No technogenic degradation of the marshes in the southern taiga of Western Siberia has been detected.
Полный текст,
WOS,
Scopus
Держатели документа:
RAS, Siberian Branch, Inst Forest, Krasnoyarsk 660036, Russia
RAS, Siberian Branch, Inst Chem Kinet & Combust, Novosibirsk 630090, Russia
Joint Inst Nucl Res, Frank Lab Neutron Phys, Dubna 141980, Moscow Region, Russia
Доп.точки доступа:
Efremova, T.T.; Efremov, S.P.; Koutsenogii, K.P.; Peresedov, V.F.
Аннотация: In a eutrophic marsh. Fe. Mn. Ni. and Co are the elements of moderate biological capture and Cr is the element of weak biological capture. Over the history of the peatbog formation migration of elements is determined by the oxidation-reduction zonality of the peatbog thickness, the quality of humous barriers. and the carbonate equilibrium in the stagnant waters. No technogenic degradation of the marshes in the southern taiga of Western Siberia has been detected.
Полный текст,
WOS,
Scopus
Держатели документа:
RAS, Siberian Branch, Inst Forest, Krasnoyarsk 660036, Russia
RAS, Siberian Branch, Inst Chem Kinet & Combust, Novosibirsk 630090, Russia
Joint Inst Nucl Res, Frank Lab Neutron Phys, Dubna 141980, Moscow Region, Russia
Доп.точки доступа:
Efremova, T.T.; Efremov, S.P.; Koutsenogii, K.P.; Peresedov, V.F.
Biogeochemical migration of calcophylic elements in the conditions of a deep-seated marsh in West Siberia
[Text] / T. T. Efremova [et al.] // J. Radioanal. Nucl. Chem. - 1999. - Vol. 241, Is. 2. - P355-360, DOI 10.1007/BF02347475. - Cited References: 17
. - 6. - ISSN 0236-5731
РУБ Chemistry, Analytical + Chemistry, Inorganic & Nuclear + Nuclear Science & Technology
Аннотация: An accumulation of Cu and As is found in the peat deposit of an eutrophic marsh together with anomalously high concentrations of Ga in some layers. The element dispersed in the peatbog depth in the greatest extent is Zn, and in equally small portions there is dispersed In and Au. The main factors of the biogeochemical migration of Cu, Zn, In, Au, As, Ga in peatbog formation are: the lithological peculiarities of the territory, the oxidation-reduction zonality of the deposit depth within the limits of oxidation and the reduction background, the quality of the humus sorbing barriers, the carbonate equilibrium of marsh waters, and anthropogenic factors. A tendency to accumulate Zn migration streams in the bedding of marsh forests in South West Siberian taiga is observed.
Полный текст,
WOS,
Scopus
Держатели документа:
RAS, Siberian Branch, Inst Forest, Krasnoyarsk 660036, Russia
SB RAS, Inst Chem Kinet & Combust, Novosibirsk 630090, Russia
Joint Inst Nucl Res, Neutron Phys Lab, Dubna 141980, Moscow Region, Russia
Доп.точки доступа:
Efremova, T.T.; Efremov, S.P.; Koutzenogii, K.P.; Peresedov, V.F.
Аннотация: An accumulation of Cu and As is found in the peat deposit of an eutrophic marsh together with anomalously high concentrations of Ga in some layers. The element dispersed in the peatbog depth in the greatest extent is Zn, and in equally small portions there is dispersed In and Au. The main factors of the biogeochemical migration of Cu, Zn, In, Au, As, Ga in peatbog formation are: the lithological peculiarities of the territory, the oxidation-reduction zonality of the deposit depth within the limits of oxidation and the reduction background, the quality of the humus sorbing barriers, the carbonate equilibrium of marsh waters, and anthropogenic factors. A tendency to accumulate Zn migration streams in the bedding of marsh forests in South West Siberian taiga is observed.
Полный текст,
WOS,
Scopus
Держатели документа:
RAS, Siberian Branch, Inst Forest, Krasnoyarsk 660036, Russia
SB RAS, Inst Chem Kinet & Combust, Novosibirsk 630090, Russia
Joint Inst Nucl Res, Neutron Phys Lab, Dubna 141980, Moscow Region, Russia
Доп.точки доступа:
Efremova, T.T.; Efremov, S.P.; Koutzenogii, K.P.; Peresedov, V.F.