Chemical composition of snow cover in middle-taiga forest ecosystems in the Komi Republic

2011 ◽  
Vol 49 (2) ◽  
pp. 199-206 ◽  
Author(s):  
T. A. Pristova ◽  
M. I. Vasilevich
Keyword(s):  
Chemical Composition ◽  
Snow Cover ◽  
Forest Ecosystems ◽  
Komi Republic ◽  
Middle Taiga ◽  
Taiga Forest

scholarly journals Carbon stock in litter of middle taiga forest ecosystems of Central Siberia

2021 ◽  
Vol 875 (1) ◽  
pp. 012085
Author(s):  
O Sergeeva ◽  
L Mukhortova ◽  
L Krivobokov
Keyword(s):  
Organic Matter ◽  
Carbon Stock ◽  
Forest Ecosystems ◽  
Middle Taiga ◽  
Plant Residues ◽  
Study Region ◽  
Central Siberia ◽  
Multistage Processes ◽  
Taiga Forest

Abstract Litter plays an important role in the carbon cycle of forest ecosystems incorporating significant amount of carbon as a result of annual partial die-off of the biomass and releasing it during complex multistage processes of organic matter decomposition. The balance of these processes in the forests of permafrost zone significantly shifts towards the accumulation of dead organic matter. That makes the assessment of litter stock in these ecosystems particularly relevant, especially in relation to the predicted consequences of climate change in the study region. On the territory of middle taiga of Central Siberia, 14 sampling plots were established in the various landforms (slopes of different exposition, lowlands and uplands). The carbon stock in litter of the main forest types of the studied area varied from 0.47 to 4.46 kgC/m2. Also, the paper considers composition of litter accumulated in these ecosystems, including the ratio between fresh litterfall, fermented and humified plant residues, and dead roots. Our results demonstrated that fermented plant residues prevailed in the litter composition in most types of studied forest ecosystems due to specificity of hydrothermal regime and quality of litterfall. The results obtained might be applied to refine the carbon budget of Siberian forests.

scholarly journals New data on the distribution and abundance of Dendrolimus sibiricus (Tshetverikov, 1908) (Lepidoptera: Lasiocampidae) in the Komi Republic.

2021 ◽  
Author(s):  
Alexander Lukin
Keyword(s):  
Forest Ecosystems ◽  
Coniferous Forest ◽  
Komi Republic ◽  
Middle Taiga ◽  
Pheromone Traps ◽  
Northern Forest ◽  
The Past ◽  
Synthetic Pheromone ◽  
Preimaginal Stages ◽  
And Control

Abstract The Siberian silkworm (Dendrolimus sibiricus Tschetv.) is a defoliator pest that poses a significant threat to coniferous forest stands. Over the past decades, several large outbreaks of this species have occurred in Siberia (Russia), which has led to changes in forest ecosystems and an increase of expenses involved in reforestation. Adults capture new territories in the process of migration, therefore, a set of measures is needed to register the number and prevent further dispersal of the moth. One of methods of trapping is glue traps with synthetic pheromone. 16 district forestries located in the middle taiga subzone, with a total area of 151 850 hectares, were surveyed as a part of the phytosanitary monitoring of the Siberian silkworm in the Komi Republic (Russia). Analysis of 773 pheromone traps showed 414 males of the target species that were identified by their genitals. The highest indicators of catchability were found in three district forestries. Taking into account the results obtained, it was proposed to continue the monitoring using the pheromone traps, to survey more northern forest districts and to carry out subsequent searches for preimaginal stages of the silkworm in the forest districts of Priluzsky district. The study will be useful for predicting the further spread of the silkworm and for developing optimal containment and control of the pest.

Chemical composition of snow cover in the taiga zone of the Komi Republic

2011 ◽  
Vol 38 (4) ◽  
pp. 530-542 ◽  
Author(s):  
M. I. Vasilevich ◽  
V. A. Beznosikod ◽  
B. M. Kondratenok
Keyword(s):  
Chemical Composition ◽  
Snow Cover ◽  
Komi Republic ◽  
Taiga Zone

scholarly journals ECOGEOCHEMICAL DIAGNOSTICS CONDITION OF URBAN ENVIRONMENT ON POLLUTION SNOW COVER OF VORONEZH CITY

2015 ◽  
Vol 4 (4) ◽  
pp. 121-126
Author(s):  
Tatiana Ivanovna Prozhorina ◽  
Semyon Aleksandrovitch Kurolap ◽  
Nadezhda Ivanovna Yakunina
Keyword(s):  
Comparative Analysis ◽  
Chemical Composition ◽  
Snow Cover ◽  
Urban Environment ◽  
Chemical Elements ◽  
Rapid Assessment ◽  
High Sorption ◽  
Express Methods ◽  
Functional Areas ◽  
The City

Currently, the most popular are the express methods of quality control of the environment, which permit a relatively rapid assessment of ecological and geochemical situation. one such method is based on the use snow cover. snow has a high sorption capacity and is informative in identifying the object of man-made pollution of the urban environment. the paper presents the results of a study of the chemical composition of snow that had fallen in Voronezh during winter 2015. snow samples were taken in the period prior to snowmelt in various functional areas of the city. in order to identify the degree of technogenic impact on the various parts of the city of Voronezh, was made a comparative analysis of the results:аccording to the actual presence of pollutants in precipitation for the study of functional areas;сalculate the rate on the concentration of chemical elements for test samples of snow.according to the degree of mineralization and dust content in snow can be seen technogenic pressure on environment.therefore, a comparative analysis of the degree of contamination of snow in the various functional areas of the city were carried out for the two indicators of the chemical composition - the total mineralization and suspended particles(dust).the results of the analysis of the chemical composition of the melt water indicate an increased level of technogenic pollution of snow cover in all investigated functional areas of Voronezh.

scholarly journals Chemical composition of snow cover and rime at Mt.Zao, Yamagata Prefecture, Japan.

1996 ◽  
Vol 58 (5) ◽  
pp. 393-403
Author(s):  
Fumitaka YANAGISAWA ◽  
Nozomi NAKAGAWA ◽  
Hiroyuki ABE ◽  
Katsutoshi YANO
Keyword(s):  
Chemical Composition ◽  
Snow Cover

Rapid Cycling of Organic Nitrogen in Taiga Forest Ecosystems

Ecosystems ◽  
2007 ◽  
Vol 10 (3) ◽  
pp. 360-368 ◽  
Author(s):  
K. Kielland ◽  
J. W. McFarland ◽  
R. W. Ruess ◽  
K. Olson
Keyword(s):  
Organic Nitrogen ◽  
Forest Ecosystems ◽  
Rapid Cycling ◽  
Taiga Forest

Artificial and natural radionuclides in soils of the southern and middle taiga zones of Komi Republic

2017 ◽  
Vol 50 (7) ◽  
pp. 814-819 ◽  
Author(s):  
V. A. Beznosikov ◽  
E. D. Lodygin ◽  
I. I. Shuktomova
Keyword(s):  
Natural Radionuclides ◽  
Komi Republic ◽  
Middle Taiga
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