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S. A. Sycheva 《Eurasian Soil Science》2009,42(1):13-23
The lithostratigraphic, radiocarbon, macro- and micromorphological, particle-size, and other analyses have been applied to
reconstruct the Holocene evolution of soils and landscapes on the high- and mediumlevel floodplains of the Nepryadva River
in the Kulikovo field area. It is shown that the soils buried within the thickness of alluvial sediments on the high- and
medium-level floodplains were formed in different times and had their own evolution patterns; the polygenetic nature of these
soils is demonstrated. The development of floodplain landscapes in the Holocene was affected by the long-term climatic fluctuations.
The bed of the high floodplain was formed during the Late Valdai glacial stage. The beginning of the development of an intricate
sequence of buried soils and sediments of the floodplain dates back to the Boreal period. This pedosedimentary sequence in
the studied area can be referred to as the Kulikovo sequence. In the course of its formation, the pedogenic stages with a
predominant development of soils alternated with the lithogenic stages of active alluviation and deposition of colluvial deposits
from adjacent slopes on the floodplain. 相似文献
2.
Sycheva S. A. Pushkina P. R. Khokhlova O. S. Ukrainsky P. A. 《Eurasian Soil Science》2020,53(11):1521-1537
Eurasian Soil Science - Recent and Late Pleistocene soils of the central forest-steppe in the East European Plain have been studied. The main objective of the work is to reveal changes in the... 相似文献
3.
Semenov M. V. Chernov T. I. Zhelezova A. D. Nikitin D. A. Tkhakakhova A. K. Ivanova E. A. Xenofontova N. A. Sycheva S. A. Kolganova T. V. Kutovaya O. V. 《Eurasian Soil Science》2020,53(6):772-779
Eurasian Soil Science - The taxonomic structure of microbial communities in the Late Pleistocene paleosols of different ages in the Central Russian Upland formed under contrasting climatic... 相似文献
4.
S. A. Sycheva 《Eurasian Soil Science》2006,39(2):225-230
The role of women in the development of Russian soil science is analyzed. Four generations of women working in soil science are distinguished. The problems related to difficulties in obtaining higher (university) degrees are considered. There were three periods of the increasing role of women (waves of feminization) in the development of Russian soil science. The reasons for this phenomenon are discussed. Certain directions in soil science have been mainly developed by women. The paper presents information about outstanding leaders of particular scientific schools and organizers of science among women. The specificity of women’s careers in science and education is shown. 相似文献
5.
T. M. Grigor’eva S. A. Sycheva Yu. R. Belyaev E. D. Sheremetskaya 《Eurasian Soil Science》2012,45(2):172-181
Pedosediments of the Mikulino interglacial paleosol contain information about the Early Valdai cooling. For the periglacial
zone of the East European Plain, this period correlating with marine oxygen-isotope stage (MIS) 5d has not been separately
distinguished in the known national stratigraphic schemes by the Committee on Stratigraphy and by Velichko with coauthors
[4]. However, in the buried erosional landforms of the Mikulino interglacial, the deposits corresponding to this period reach
considerable thickness (up to 5 m). They were examined in the key section of the Aleksandrov quarry (Kursk oblast). On the
basis of the textural and micromorphological analyses of the Early Valdai pedosediments, the paleoenvironmental reconstruction
of the first Early Valdai cooling was performed, and the major supergene processes (pedogenic, cryogenic, erosional, etc.)
that shaped the pedosediments were characterized. Four stages of the development of local landscapes were distinguished, and
a unidirectional trend for climatic cooling against the background of the complex pattern of climatic moistening in that period
was established. Thus, a detailed pattern of the changes in the climate at the turn of the Mikulino interglacial period and
the Early Valdai cooling was reconstructed. 相似文献
6.
S. A. Sycheva S. N. Sedov M. A. Bronnikova V. O. Targulian E. Solleiro-Rebolledo 《Eurasian Soil Science》2017,50(9):991-1009
The results of a hierarchical morphogenetic, physicochemical, and mineralogical study of the Ryshkovo full-profile texture-differentiated paleosol of the Mikulino Interglacial from the section at Aleksandrov quarry in Kursk oblast are discussed. The correlation analysis of the stratigraphy of this section with global geological records made it possible to determine the position of the Ryshkovo paleosol in the chronostratigraphic system of the Late Pleistocene and to attribute it to stage MIS 5e; the duration of pedogenesis for this paleosol was no more than 12–15 ka. The results of the study indicate that the Ryshkovo paleosol is close in its properties to the Holocene soddy-podzolic soils of the East European Plain. No direct evidences in favor of the former interpretation of this paleosol as a lessivated soil genetically close to Luvisols of nemoral broadleaved forest of Central Europe have been found. The difference between the paleosol of the Mikulino Interglacial and the modern soddy-podzolic soils is mainly related to the distribution of clay coatings. In the upper part of the illuvial horizon of Mikulino paleosol, clay coatings are few in number, and typical tongues of podzolized (albic) material are absent in the profile. At the same time, silty coatings (skeletans) are abundant even in the lower part of the illuvial horizon. In general, the Mikulino paleosol is characterized by a smaller diversity of clay pedofeatures. These differences might be related to less contrasting fluctuations of the environmental conditions in the second half of the Mikulino Interglacial, to the periodical renewal of the eluvial part of Mikulino paleosol by erosional and accumulative processes, and to the absence of anthropogenic impacts on the soil during the Mikulino Interglacial. The burying of the Ryshkovo paleosol took place due to the intense development of erosional processes induced by the contrasting climatic events at the end of the interglacial period accompanied by catastrophic forest fires and sharp cooling of the climate upon the transition to the Valdai glaciation. 相似文献
7.
The genesis, evolution, and paleoecology of soils of the Early Valdai interstadials were investigated in the Aleksandrov quarry (Kursk oblast), a key section of the Late Pleistocene deposits in the periglacial area of the East European Plain. The soils developed in the uppermost parts of the buried hollows (investigated in 2009) were compared with the soils developed in the lower parts of the same hollows (investigated in 1988). The data obtained suggest that the soils in the upper parts of the hollows were developed under wetter and, at the same time, more percolative water regime than the soils in the lower parts of the hollows. These soils were formed in a semihumid climate under the forest-steppe vegetation. Forest groves existed in the upper parts of the erosional network amidst herbaceous meadow steppes. In general, the soil cover pattern of the Early Valdai interstadials corresponded to the modern soil cover pattern within the analogous landscapes. 相似文献
8.
S. A. Sycheva 《Eurasian Soil Science》2007,40(3):341-346
The most important aspects of the research of Il’in that turned out to be ahead of his time are analyzed. These aspects are as follows: the relationships and simultaneous development of surface rocks, relief elements, and soils; the integrity of the development and hierarchical spatial-temporal variability of landscapes; the continuous displacement of natural zones (evolutionary and revolutionary, when moving to the equator and poles, respectively); the succession of climatic phases of the geological cycle—from the interglacial xerothermic phase to the glacial cold and humid one separated by transitional phases with a temperate climate; and the complex subaerial-stream theory of the origin of loess. 相似文献
9.
V. I. Trukhachev O. V. Sycheva N. Z. Zlydnev P. N. Mitkalov 《Russian Agricultural Sciences》2008,34(5):348-349
A rapid analysis of bacterial contamination of milk during its production process is performed with the use of the bioluminescence-based
ATPmetry method. It is established that, before entering the cooling tank, milk meets top-grade requirements (up to 300 000
CFU/cm3) and in the tank, grade-one. 相似文献
10.
The Late Pleistocene sediments and soils are exposed in the paleogully (or buried balka) in the Aleksandrov quarry (central
part of the European Plain and Middle Russian Upland) The previous Mikulino-Valdai climatic and erosional cycles are illustrated
using silica biomorphic analysis. The distributions of sponge spicules and phytoliths have shown dynamic and stable changes
during the formation of interglacial pedosediments (OIS 5e). Such changes in alluvial, deluvial and pedological processes
formed local landscapes of the European Russia. 相似文献
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