Changes in the groundwater levels and regimes in the taiga zone of Western Siberia as a result of global warming

2021 ◽  
Author(s):  
Oleg Savichev ◽  
Julia Moiseeva ◽  
Natalia Guseva
Keyword(s):  
Global Warming ◽  
Western Siberia ◽  
Taiga Zone ◽  
Groundwater Levels

ALGORITHM FOR MANAGEMENT AND PROTECTION OF SUBMERSIBLE PUMP

2019 ◽  
pp. 245-250
Author(s):  
Tanya Pehlivanova
Keyword(s):  
Global Warming ◽  
Submersible Pump ◽  
Groundwater Levels ◽  
Frequent Switching ◽  
Full Utilization ◽  
Level Sensors

Global warming has led to lower levels of the water basins. Groundwater levels also decrease. Sometimes they fall so much so that submersible pumps in the wells remain almost dry and even in short work cycles get damaged. Their repairs are very expensive and labour intensive. An algorithm for management and protection of submersible pump is proposed in the paper. It uses 5 level sensors. It allows full utilization of the wells capacity and protects the pump motors from premature wear due to frequent switching on and off.

scholarly journals The Multiscale Monitoring of Peatland Ecosystem Carbon Cycling in the Middle Taiga Zone of Western Siberia: The Mukhrino Bog Case Study

Land ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 824
Author(s):  
Egor Dyukarev ◽  
Evgeny Zarov ◽  
Pavel Alekseychik ◽  
Jelmer Nijp ◽  
Nina Filippova ◽  
...  
Keyword(s):  
Carbon Cycling ◽  
Western Siberia ◽  
Carbon Accumulation ◽  
Middle Taiga ◽  
Taiga Zone ◽  
Field Station ◽  
Moss Species ◽  
Chamber Method ◽  
The Impact

The peatlands of the West Siberian Lowlands, comprising the largest pristine peatland area of the world, have not previously been covered by continuous measurement and monitoring programs. The response of peatlands to climate change occurs over several decades. This paper summarizes the results of peatland carbon balance studies collected over ten years at the Mukhrino field station (Mukhrino FS, MFS) operating in the Middle Taiga Zone of Western Siberia. A multiscale approach was applied for the investigations of peatland carbon cycling. Carbon dioxide fluxes at the local scale studied using the chamber method showed net accumulation with rates from 110, to 57.8 gC m−2 at the Sphagnum hollow site. Net CO2 fluxes at the pine-dwarf shrubs-Sphagnum ridge varied from negative (−32.1 gC m−2 in 2019) to positive (13.4 gC m−2 in 2017). The cumulative May-August net ecosystem exchange (NEE) from eddy-covariance (EC) measurements at the ecosystem scale was −202 gC m−2 in 2015, due to the impact of photosynthesis of pine trees which was not registered by the chamber method. The net annual accumulation of carbon in the live part of mosses was estimated at 24–190 gC m−2 depending on the Sphagnum moss species. Long-term carbon accumulation rates obtained by radiocarbon analysis ranged from 28.5 to 57.2 gC m−2 yr−1, with local extremes of up to 176.2 gC m−2 yr−1. The obtained estimates of various carbon fluxes using EC and chamber methods, the accounting for Sphagnum growth and decomposition, and long-term peat accumulation provided information about the functioning of the peatland ecosystems at different spatial and temporal scales. Multiscale carbon flux monitoring reveals useful new information for forecasting the response of northern peatland carbon cycles to climatic changes.

scholarly journals Analysis of the material culture and new radiocarbon dating of the Early Neolithic site of Amnya I

2019 ◽  
Vol 8 (2) ◽  
pp. 149-159
Author(s):  
Ekaterina Nikolaevna Dubovtseva ◽  
Lubov Lvovna Kosinskaya ◽  
Henny Piezonka
Keyword(s):  
Material Culture ◽  
Western Siberia ◽  
Northern Taiga ◽  
Taiga Zone ◽  
Early Neolithic ◽  
Neolithic Site ◽  
Relative Chronology ◽  
The One ◽  
Technological Analysis ◽  
Khanty Mansi Autonomous

The ancient fortified settlement of Amnya I is a unique Early Neolithic site in the northern taiga zone of Western Siberia (Khanty-Mansi Autonomous Okrug, the Amnya river). It is located on a promontory and has three lines of defense and ten dwelling depressions. The structures of the excavated dwellings are very similar, though the artifact assemblage appears rather heterogeneous. We carried out a technical and technological analysis of ceramics, which showed no correlation between the texture, on the one hand, and the morphology and ornamentation of pots on the other one. Planiographic analysis of ceramics showed that vessels with comb and incising patterns are found in different dwellings, although there are objects in which both groups lie together. Various categories of stone implements (bladelets and polished arrowheads) also appear on different parts of the settlement. Most likely, the observed differences in the artefact complexes of objects are associated with the stages of the functioning of the settlement. The absolute chronology does not yet clarify the sequence of erection and existence of objects. New AMS date is probably vulnerable to a significant reservoir effect. The abundance of unsolved issues of absolute and relative chronology makes the resumption of research on this unique site urgent.

Change in the boundaries of geotemperature zones in Western Siberia during global warming

1997 ◽  
Vol 31 (11) ◽  
pp. 655-659 ◽  
Author(s):  
S. S. Vyalov ◽  
S. M. Fotiev ◽  
A. S. Gerasimov ◽  
A. I. Zolotar'
Keyword(s):  
Global Warming ◽  
Western Siberia

scholarly journals ОСОБЕННОСТИ ЕСТЕСТВЕННОГО ЛЕСОВОЗОБНОВЛЕНИЯ ГАРИ УРАЙСКОГО ЛЕСНИЧЕСТВА ХМАО

2021 ◽  
pp. 38-47
Author(s):  
А.В. Данчева
Keyword(s):  
Western Siberia ◽  
High Elevation ◽  
Middle Taiga ◽  
Taiga Zone ◽  
Forest Edges ◽  
Burnt Area ◽  
Burned Areas ◽  
Stage Of Development ◽  
Current Specification ◽  
Khanty Mansi Autonomous

Приведены данные исследований естественного лесовозобновления гари в условиях Западно-Сибирского среднетаежного равнинного лесного района таежной лесорастительной зоны (на примере Урайского лесничества, расположенного в юго-западной части Ханты-Мансийского автоном- ного округа – Югры на территории кондинского административного района). Оценка лесовозобновле- ния проведена по методу учетных лент, заложенных на расстоянии 50 и 100 м от стены леса. Данные исследований показали непрерывность лесовосстановительного процесса на гари. Отмечается наличие всходов, самосева и подроста высотных категорий «мелкий», «средний» и «крупный». лесовозобновле- ние гари происходит двумя древесными породами – сосной и березой. По существующим нормативам возобновление сосны оценивается как хорошее. По количеству всходов и подроста преобладает сосна. При удалении от стены леса на 100 м происходит уменьшение количества всходов и подроста всех кате- горий крупности в 2–3 раза в сравнении с аналогичными показателями на расстоянии 50 м от стены леса независимо от вида древесной породы. Во всех высотных категориях отмечается преобладание жизне- способного подроста сосны – до 90–100 %, что является основным показателем успешности лесовос- становления исследуемой гари на данном этапе развития. береза в большинстве случаев представлена сомнительными по жизнеспособности экземплярами. В качестве лесохозяйственных мероприятий мож- но предложить проведение мониторинга за состоянием подроста и уходные мероприятия за подростом. The results of features formations of post-fire pine undergrowth on burnt area of the middle taiga zone of Western Siberia (for example, Uraisk forestry department) in location of the Khanty-Mansi Autonomous Area. Undergrowth was studied on tapes laid out parallel to the forest edges at a distance of 50 and 100. According to studies it is observed of reafforestation continuity of burned areas. The presence of sprouting and undergrowth of the high- elevation categories «small», «medium» and «large» is noted. The burned areas reforestation with two tree species – pine and birch proceed. According to current specification, the pine natural regeneration is assessed as «normal». The amount of pine undergrowth is greater than the amount of birch undergrowth. To be at 100 m from forest edges the number of seedlings and undergrowth decreases by 2–3 times in comparison with the same indicators at 50 m from the forest edges. There is a predominance of vital pine undergrowth – up to 90–100 %. This is evidence of the successful reforestation of burned areas at this stage of development.

scholarly journals Many-year Fluctuations of River Runoff in South-taiga Subzone of the Western Siberia

2013 ◽  
pp. 34-45
Author(s):  
Keyword(s):  
Western Siberia ◽  
River Flow ◽  
Atmospheric Precipitation ◽  
Southern Taiga ◽  
Low Flow ◽  
Groundwater Levels ◽  
Level Regime ◽  
Southern Taiga Subzone ◽  
Bog Water

A detailed analysis of river flow long-term changes in the Southern taiga subzone of Western Siberia has been carried out with the Chaya River basin as an example. Causal statistical analysis of changes in groundwater levels, bog water level, air temperature and atmospheric precipitation has been performed. The conducted studies revealed a statistically significant trend in the increase of surface runoff in the winter low flow of the Chaya River and its large tributaries (the Iksa and the Parbig), as well as the underground runoff component for virtually the entire year. An ambiguous regularity has been observed in the change of the level regime of rivers. The main reason for the observed changes in the water regime of the said territory is the redistribution of atmospheric moisture and shifting of the boundaries of hydrological seasons.

scholarly journals Mobile forms of metals in soils in the Nadym-Pur interfluve (Western Siberia)

2020 ◽  
pp. 136-145
Author(s):  
E. A. Romanenko ◽  
D. V. Moskovchenko ◽  
A. A Kudryavtsev ◽  
G. N. Shigabaeva
Keyword(s):  
Metal Content ◽  
Western Siberia ◽  
Total Content ◽  
Fluorescence Analysis ◽  
West Siberia ◽  
Taiga Zone ◽  
Fe Content ◽  
Mobile Forms ◽  
Northern Regions ◽  
Accumulation Of Metals

The total concentrations of metals (Fe, Mn, Cu, Ni, Cr, Sr) and their mobile forms extracted by an ammonium acetate buffer (pH = 4,8) were studied in soils samples collected from Nadym-Pur interfluve (West Siberia), near the northern limit of the taiga zone. The heavy metal content was determined in 55 background soil samples and in 25 pyrogenic ones. Gross content was determined on a spectrometer "SPECTROSCAN MAX-GV" using X-ray fluorescence analysis. Mobile forms of metals were determined on a ContrAA 700 atomic absorption spectrometer by flame and electrothermal methods. The statistics are calculated using the Excel software package. The study confirmed the weak accumulation of metals in the soils of the northern regions of Western Siberia. The total content below the soil world average for Fe is 5 times, Mn – 3 times, Sr – 2 times, Cr – 1,4 times. The content of mobile forms varies widely depending on the amount of organic matter. The percentage of mobile forms of metals from the total content was: Cr – 0.84%, Fe – 1,2%, Sr – 3,8%, Mn – 8,7%, Ni – 15%. In the profile of podzols, the distribution of mobile forms of metals has an eluvial-illuvial character. Mn and Sr accumulate intensively in the surface organogenic horizons, and the Fe content increases in the BF horizon. Minimum values are marked in horizon E. In pyrogenic soils, there is an increase in the content of mobile forms of metals due to the intake of ash. Metal content usually not exceeded the maximal permissible concentrations for soils.

scholarly journals The latitudinal distribution of vegetation cover in Siberia

2019 ◽  
Vol 16 ◽  
pp. 00047
Author(s):  
Irina Safronova ◽  
Tatiana Yurkovsksya
Keyword(s):  
Vegetation Cover ◽  
Western Siberia ◽  
Steppe Zone ◽  
Coniferous Forests ◽  
Forest Steppe ◽  
Taiga Zone ◽  
Eastern Siberia ◽  
Central Siberia ◽  
Zonal Vegetation ◽  
North Eastern

The latitudinal changes of vegetation cover on the plains of Siberia are observed. In Western Siberia there are 4 zones (tundra and taiga, and forest-steppe and steppe only here), in Central and North-Eastern Siberia − only 2 zones (tundra and taiga).Tundra zone is represented by 4 subzones in Central Siberia; in Western and North-Eastern Siberia − by 3 subzones (there are no polar subzone). All 5 subzones of the taiga zone are distinguished both in Western Siberia and in the Central Siberia, but in the Central Siberia, forests are found in very high latitudes. The feature of the taiga zone of Western Siberia is high paludification. As a result, the vegetation of mires dominates over the zonal vegetation. Zonal West Siberian types are dark coniferous forests. Light coniferous forests predominate in the taiga zone of Central and North-Eastern Siberia. In the forest-steppe zone in Western Siberia forests are small-leaved − birch, aspen-birch (Betula pendula, Populus tremula). The abundance of mires is the feature of this zone, as well as in the taiga.

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