NEW EARLY IRON AGE CULTURE IN THE SOUTHERN TAIGA ZONE OF CENTRAL SIBERIA

2008 ◽  
Vol 35 (3) ◽  
pp. 68-76
Author(s):  
P.V. Mandryka
Keyword(s):  
Iron Age ◽  
Southern Taiga ◽  
Early Iron Age ◽  
Taiga Zone ◽  
Central Siberia ◽  
Southern Taiga Zone

Natural reforestation effect on soil organic carbon and СО2 flux dynamics in southern taiga ecosystems with Albeluvisols

2020 ◽  
Author(s):  
Ivan Vasenev ◽  
Tatyana Komarova ◽  
Solomon Melese
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Air Temperature ◽  
Natural Regeneration ◽  
Land Use Changes ◽  
Southern Taiga ◽  
Maximum Intensity ◽  
Taiga Zone ◽  
Southern Taiga Zone

<p><strong>Introduction.</strong> Natural reforestation is the widespread trend in the modern land-use changes in the southern taiga zone at the European territory of Russia after 1990s. Its total area is more than 10 million ha. At the same time forest natural regeneration is mutual usual process in the long-term land-use changes in this part of Russia with complex history of its development during millennium. It plays crucial role in soil successions, their fertility and environmental function dynamics including bio productivity support and carbon sequestration, which is given special attention against the background of global climate change challenges in the twenty-first century. This paper presents the results of a round-the-year monitoring of soil CO<sub>2</sub> emission in comparable sites of the fallow lands chrono sequences in conditions of a representative area of the Central Forest Reserve with background wood-sorrel spruce forests which are typical for the southern taiga zone of Central Russia.</p><p><strong>Objects and methods. </strong>The dominant soil type is sandy-loam Albeluvisols (by WRB, or Orthopodzolic soil by Russia Taxonomy, or Alfisols by Soil Taxonomy, or Podzoluvisols by FAO). The studies have been done in the representative 5 sites at different age of natural reforestation: (1) Fallow meadow grassland – “0-moment”; (2) Forest-fallow birch domination stage of 10-15 year; (3) Birch domination stage of 20-30 year with young spruce participation; (4) Birch-forest stage of 50-60 year with spruce participation; (5) Spruce-forest after fallow stage of more than 100 year with birch participation. CO<sub>2</sub> fluxes seasonal and diurnal dynamics measuring were carried out in situ using a mobile gas analyzer Li-820 and soil exposure chambers with parallel measurements of air temperature, soil temperature and moisture. Also, biomass, soil organic carbon and bulk density were analyzed in their topsoil and subsoil horizons with C stock calculation.</p><p><strong>Results and discussion.</strong> Analysis of the successional dynamics of the topsoil organic carbon stock showed the maximum rate of their increasing in the first stages of natural reforestation by a thick undergrowth of birch (more than 30 g m<sup>-2</sup>∙year<sup>-1</sup>) that agrees well with the maximum intensity of the woody biomass growth in case of dominant birch forest up to 50-60 years (more than 100 g m<sup>-2</sup>∙year<sup>-1</sup>). Research revealed the maximum intensity of soil CO<sub>2</sub> emission (up to 11-12 g C-CO<sub>2</sub> m<sup>-2</sup>∙day<sup>-1</sup>) in the meadow fallow land and its gradual decreasing in process of reforestation down to values close to background ecosystems in 4-5 g C-CO<sub>2</sub> m<sup>-2</sup>∙day<sup>-1 </sup>in the last investigated succession study with wood-sorrel spruce older than 100 years, which is in good correlation with the gradual humus accumulation in topsoil due to reduced mineralization of organic compounds from dying vegetation. The seasonal and daily dynamics of soil CO<sub>2</sub> emissions are determined by soil temperature (K<sub>TS</sub> 0.77 - 0.99), air temperature (K<sub>TA</sub> 0.42 - 0.99), and soil moisture in spring and fall (K<sub>WS</sub> -0.55 - -0.98).</p><p><strong>Conclusions. </strong>Investigation of forest natural regeneration impacts on the level of soil organic carbon accumulation and CO<sub>2</sub> fluxes in the representative southern taiga ecosystems is important element of their soil environmental monitoring and management.</p>

Changes in soil respiration in the course of the postagrogenic succession on sandy soils in the southern taiga zone

2013 ◽  
Vol 46 (9) ◽  
pp. 935-947 ◽  
Author(s):  
D. I. Lyuri ◽  
D. V. Karelin ◽  
A. V. Kudikov ◽  
S. V. Goryachkin
Keyword(s):  
Soil Respiration ◽  
Sandy Soils ◽  
Southern Taiga ◽  
Taiga Zone ◽  
Southern Taiga Zone

scholarly journals METHODS OF NATURAL SCIENCES IN THE STUDY OF ANCIENT CERAMICS (Transition Time from the Bronze Epoch to the Early Age. South Western Siberian Plain)

2018 ◽  
Vol 27 (2) ◽  
pp. 375-385
Author(s):  
V. I. Molodin ◽  
L. N. Mylnikova
Keyword(s):  
Bronze Age ◽  
Iron Age ◽  
Northern Taiga ◽  
Southern Taiga ◽  
Natural Sciences ◽  
Transition Time ◽  
Early Iron Age ◽  
Forest Steppe ◽  
Thermal Methods ◽  
X Ray

The article publishes the results of studying the molding masses and the quality of firing ceramic vessels of the Linevo 1 site (transition time from the Bronze Age to the Early Iron Age). The research was carried out using the methods of natural sciences: petrographic, X-ray phase and thermal. Five groups of ceramics were identified in the ceramic complex of the site. The second — Late Irmenskaya culture is a continuation development of the autochthonous — Irmenskaya. Three others: Molchanovskaya, Samodelkinskaya and with features of the early Iron Age — are imported. Within the framework of one site Linevo 1, there were recorded the existence of two traditions of making molding masses: chamotte and granitoid. The second tradition has been singled out both for the Molchanovskaya ceramic group and for the Samodelkino group but they differ in the composition of rock fragments. It was calculated that most of the collection is made up of «transitional» forms, «forms of imitation». There are no identical or closely related products in terms of morphological features in the collection. Syncretism of the complex under consideration is evidence of the complex ethno-cultural composition of the inhabitants of the ancient settlement. It can be clearly traced as a local autochthonous component that grows on the Irmenskaya culture basis and the northern taiga, coming to the forest-steppe most likely from the southern taiga of the Ob River. Obviously the fifth group of ceramics is foreign. As for the Linevo settlement complex it generally confirms the tendency of the joint existence of various ceramic traditions of the forest-steppe, steppe and taiga circle of cultures already noted for the cultures of the transitional time of the West Siberian forest-steppe with the predominance of the Irmenskaya culture — Late Irmenskaya culture component. All the results obtained are objective in nature, since they are based not on visual definitions, but on petrographic, X-ray phase, thermal methods and mathematical miscalculations.

scholarly journals Connection between the percentage of late wood and wood density in Scots pine from the southern taiga zone of the European part of Russia

10.12737/3340 ◽  
2014 ◽  
Vol 4 (1) ◽  
pp. 21-26
Author(s):  
Киселева ◽  
Aleksandra Kiseleva ◽  
Хван ◽  
Yuriy Khvan
Keyword(s):  
Environmental Factors ◽  
Scots Pine ◽  
Southern Taiga ◽  
European Part ◽  
Pine Forest ◽  
Taiga Zone ◽  
Late Wood ◽  
European Part Of Russia ◽  
Growing Conditions ◽  
Southern Taiga Zone

There is a relationship between the properties of wood. Percentage of late wood – wood macrostructure characterization is a definite relation to density. This relationship varies slightly depending on the species and environmental factors. Establishment of interrelation of these parameters for wood from different regions and growing conditions, will more accurately judge the quality indicators of wood in specific circumstances. The studies were conducted with a timber of Scots pine growing in the Vologda region. In Ustyuzhansky Forestry two sites differing in conditions of growth are selected - lichen pine forest and blueberry and cranberry pine forest.

LANDSCAPE AND ECOLOGICALLY DIFFERENTIATED RATIONAL USE OF NATURAL RESOURCES IN AGRICULTURE OF THE ANGARA-LENA MOUNTAIN PROVINCE OF EASTERN SIBERIA

2021 ◽  
Vol 43 (2) ◽  
pp. 185-194
Author(s):  
I. TROFIMOV ◽  
L. TROFIMOVA ◽  
E. YAKOVLEVA ◽  
N. RYBALSKY ◽  
V. SNAKIN ◽  
...  
Keyword(s):  
Natural Resources ◽  
Agricultural Land ◽  
Southern Taiga ◽  
Nature Management ◽  
Taiga Zone ◽  
Eastern Siberia ◽  
Ecological Patterns ◽  
Agriculture Development ◽  
Mountain Province ◽  
Southern Taiga Zone

The spatial distribution of biological and ecological patterns in the Angara-Lena mountain province in Eastern Siberia is characterized according to the data of agroland- scape and ecological zoning of forage lands to assess the potential, sustainable agricultural nature management and environmental protection in the region. The province occupies area of 12 451.7 thousand hectares in the southern taiga zone and covers the Angara-Lena plateau (with 800-1460 m altitudes) and the low-mountain Primorsky Ridge. Most of the province territory (about 83%) is occupied by mountain forests. The area of agricultural land is 5% of the total area (including arable lands 2.7%, hayfields 0.7%, and pastures 1.5%). Significant areas of larch, mixed, birch forests of low mountains with a grass cover of large grasses (mountain crayfish, mixed-leaved bodyak, forest geranium, northern bedstraw, bathhouse species) and cereals (Langsdorf weinwort, spreading bor, sod pike, etc.) are used for grazing. The ecological state of the landscapes is tense, and tense and heavy for thearable. Agriculture and plant growing riskiness is highlighted according to natural and climate region features, especially erosion increasing as a result of agriculture. Simultaneously, however, the richest natural resources in the province, including fodder ones, are perspective for agriculture development.

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