Pollution Stress of Siberian Forests

1998 ◽  
pp. 31-54 ◽  
Author(s):  
S. Nilsson ◽  
K. Blauberg ◽  
E. Samarskaia ◽  
V. Kharuk
Keyword(s):  
Siberian Forests

scholarly journals Remote Sensing Data for Calibrated Assessment of Wildfire Emissions in Siberian Forests

Proceedings ◽  
2018 ◽  
Vol 2 (7) ◽  
pp. 348
Author(s):  
Evgenii Ponomarev ◽  
Eugene Shvetsov ◽  
Kirill Litvintsev ◽  
Irina Bezkorovaynaya ◽  
Tatiana Ponomareva ◽  
...  
Keyword(s):  
Standard Procedure ◽  
Remote Sensing Data ◽  
Fire Danger ◽  
Variable Intensity ◽  
Burned Areas ◽  
Radiative Power ◽  
Terra Modis ◽  
Siberian Forests

This study was carried out for Siberia using Terra/Modis satellite data (2002–2016), data of ground surveys on burned areas of different ages, long-term meteorological information, and numerical simulation results. On the basis of meteorological and wildfire databases, we evaluated the probability (~18%) of an extreme fire danger scenario that was found to occur every 8 ± 3 years in different parts of the region. Next, we used Fire Radiative Power (FRP) measurements to classify the varieties of burning conditions for each wildfire in the database. The classification of the annually burned forest area was obtained in accordance with the assessments of burning intensity ranges categorized by FRP. Depending on the fire danger scenario in Siberia, 47.04 ± 13.6% of the total wildfire areas were classified as low-intensity burning, 42.46 ± 10.50% as medium-intensity fire areas, and 10.50 ± 6.90% as high-intensity. Next, we calculated the amount of combusted biomass and the direct emissions for each wildfire, taking into account the variable intensity of burning within the fire polygons. The total annual emissions were also calculated for Siberia for the last 15 years, from 2002 to 2016. The average estimate of direct carbon emission was 83 ± 21 Tg/year, which is lower than the result (112 ± 25 Tg/year) we obtained using the standard procedure.

scholarly journals Estimation of Direct Fire Emissions from Forests Burning in Siberia

2020 ◽  
Vol 4 (1) ◽  
pp. 12
Author(s):  
Evgenii I. Ponomarev
Keyword(s):  
Carbon Emissions ◽  
Summer Period ◽  
Central Siberia ◽  
Fire Emissions ◽  
Emission Estimate ◽  
Radiative Power ◽  
Order Of Magnitude ◽  
Siberian Forests ◽  
Fire Radiative Power

Using a database on wildfires recorded by remote sensing for 1996–2020, we assessed the seasonal variation of direct carbon emissions from the burning in Siberian forests. We have implemented an approach that takes into account the combustion parameters and the changing intensity of the fire (in terms of Fire Radiative Power (FRP)), which affects the accuracy of the emission estimate. For the last two decades, the range of direct carbon emissions from wildfires was 20–250 Тg С per year. Sporadic maxima were fixed in 2003 (>150 Тg С/year), in 2012 (>220 Тg С/year), and in 2019 (>190 Тg С/year). Preliminary estimation of emissions for 2020 (on 30th of September) was ~180 Tg С/year. Fires in the larch forests of the flat-mountainous taiga region (Central Siberia) made the greatest contribution (>50%) to the budget of direct fire emission, affecting the quality of the atmosphere in vast territories during the summer period. According to the temperature rising and forest burning trend in Siberia, the fire emissions of carbon may double (220 Тg С/year) or even increase by an order of magnitude (>2000 Тg С/year) at the end of the 21st century, which was evaluated depending on IPCC scenario.

scholarly journals Sustainability of Siberian Forests

1993 ◽  
Vol 20 (2) ◽  
pp. 177-177 ◽  
Author(s):  
Sten Nillson
Keyword(s):  
Siberian Forests

Carbon cycle of permafrost transect: main terrestrial and hydrological ecosystems of Eastern Siberia

2020 ◽  
Author(s):  
Trofim Maximov ◽  
Han Dolman ◽  
Ayumi Kotani ◽  
Per Anderson ◽  
Ayaal Maksimov ◽  
...  
Keyword(s):  
Soil Respiration ◽  
Carbon Cycle ◽  
Growing Season ◽  
Larch Forest ◽  
Eddy Correlation ◽  
Northeastern Russia ◽  
Eastern Siberia ◽  
Lena River ◽  
Central Yakutia ◽  
Siberian Forests

<p>Almost 65% of Siberian forests and 23% of tundra vegetation grow in permafrost zone. According to our estimate, carbon stocks in the soils of forest and tundra ecosystems of Yakutia (Eastern Siberia, Russia) amount to 17 billion tons (125.5 million hectares of forest and 37 million hectares of tundra in total) that is about 25% of total carbon resource in the forest soils of the Russian Federation.<br>This presentation is compiled from the results of many years time series investigations conducted on the study of carbon cycle in permafrost-dominated forests with different productivity and typical tundra and along Great Lena river basin including Aldan and Viluy tributaries. <br>Seasonal photosynthesis maximum of forest canopy vegetation in dry years falls into June, and in humid ones – into July. During the growing season the woody plants of Yakutia uptake from 1.5 to 4.0 t C ha<sup>-1</sup> season<sup>-1</sup> depending on water provision. Night respiration is higher in dry and extremely dry years (10.9 and 16.1% respectively). The productive process of tree species in Eastern Siberia is limited by endogenous (stomatal conductance) and exogenous (provision with moisture and nutrients, nitrogen specifically) factors. The increase of an atmospheric precipitation after long 2-3 annual droughts accompanied with strong surge in photosynthetic activity of forest plants is almost 2.5 times. <br>The temperature of soil is a key factor influencing soil respiration in the larch forests. Average soil respiration for the growing season comes to 6.9 kg C ha<sup>-1</sup> day<sup>-1</sup>, which is a characteristic of Siberian forests. Annual average soil emission is 4.5±0.6 t C ha<sup>-1</sup> yr<sup>-1</sup>.<br>As our multi-year studies showed, there is significant interannual NEE variation in the Central Yakutia larch forest, while in the Southern Yakutia  larch forest and tundra ecosystem variation is more smooth, because the climatic conditions in these zones (close to the mountain and sea)  are less changeable than in sharply continental Central Yakutia. <br>According to our long-term eddy-correlation data, the annual uptake of carbon flux (NEE) in the high productivity larch forest of South eastern Yakutia, 60N – 2.43±0.23 t C ha<sup>-1</sup> yr<sup>-1</sup>, in the moderate productivity larch forest of the Central Yakutia, 62N makes 2.12±0.34 t C ha<sup>-1</sup> yr<sup>-1</sup> and in the tundra zone, 70N – 0.75±0.14 t C ha<sup>-1</sup> yr<sup>-1</sup>.<br>Interannual variation of carbon fluxes in permafrost forests in Northeastern Russia (Yakutia) makes 1.7-2.4 t C ha<sup>-1</sup> yr<sup>-1</sup> that results in the upper limit of annual sequestering capacity of 450-617 Mt C yr<sup>-1</sup>. In connection with climate warming there is a tendency of an increase in the volume of carbon sequestration by tundra and as opposed to decrease by forest ecosystem in the result of prolongation of the growing season and changing of plant successions.  This is also supported by changes in land use as well as by CO<sub>2</sub> sequestration in the form of fertilizer. <br>According our biogeochemical investigation annual flux of carbon from main in Eastern Siberia Lena river hydrological basin is almost 6.2 Mt C yr<sup>-1</sup> including 28% at Aldan and 14% at Viluy rivers.</p>

scholarly journals Effects of climate dataset type on tree-ring analysis: A case study for Siberian forests

Polar Science ◽  
2019 ◽  
Vol 21 ◽  
pp. 136-145 ◽  
Author(s):  
Shunsuke Tei ◽  
Shin Nagai ◽  
Atsuko Sugimoto
Keyword(s):  
Tree Ring ◽  
Tree Ring Analysis ◽  
Ring Analysis ◽  
Siberian Forests

scholarly journals Polarimetric Parameters for Growing Stock Volume Estimation Using ALOS PALSAR L-Band Data over Siberian Forests

2013 ◽  
Vol 5 (11) ◽  
pp. 5725-5756 ◽  
Author(s):  
Tanvir Chowdhury ◽  
Christian Thiel ◽  
Christiane Schmullius ◽  
Martyna Stelmaszczuk-Górska
Keyword(s):  
Volume Estimation ◽  
Alos Palsar ◽  
Growing Stock ◽  
L Band ◽  
Stock Volume ◽  
Siberian Forests

Outstanding explorer of Siberian ecosystems (on the 90-th anniversary of Anatoliy Sergeevich Rozhkov)

2017 ◽  
Author(s):  
Т.И. Морозова ◽  
А.С. Плешанов
Keyword(s):  
Siberian Larch ◽  
Management Activity ◽  
Industrial Air Pollution ◽  
Systematic Anatomy ◽  
Siberian Moth ◽  
Forest Insects ◽  
Physiology And Biochemistry ◽  
The Russian Federation ◽  
Academy Of Sciences ◽  
Siberian Forests

Приводится обзор научной и научно-организационной деятельности Анатолия Сергеевича Рожкова (1925–2005 гг.), выдающегося лесного энтомолога, лесопатолога, эколога, заслуженного деятеля науки Российской Федерации, доктора биологических наук, профессора. Коллектив сформированной А.С. Рожковым лаборатории в Сибирском институте физиологии и биохимии растений СО РАН в г. Иркутске стоял в основе эколого-физиологического направления в отечественной лесной энтомологии, продолженной впоследствии красноярскими исследователями в Институте леса им. В.Н. Сукачева СО РАН. Основные работы, написанные А.С. Рожковым или вышедшие под его редакцией, включают сводки по вредителям лиственницы сибирской, особенностям морфологической и биохимической реакций хвойных на повреждения насекомыми и газовыми загрязнениями воздуха, систематике, анатомии и экологии основных вредителей сибирской лесов: сибирского шелкопряда, черного пихтового и лиственничного усачей. Приводится полная библиография работ А.С. Рожкова. The article presents an overview of scientific and management activity of Anatoliy Sergeyevich Rozkov (1925–2005), Doctor of Science (Entomology), Professor, Honorary Scientist of the Russian Federation, an outstanding forest entomologist, plant pathologist, and forest ecologist. A team of the department created by A.S. Rozkov at the Siberian Institute of Plant Physiology and Biochemistry of Siberian Branch of the Russian Academy of Sciences (SB RAS) in Irkutsk, was at the origin of physiological ecology of forest insects in Russia. Later on, this approach was carried on at the V.N. Sukachev Institute of Forest SB RAS in Krasnoyarsk. Major works written or edited by Rozkov are focused on Siberian larch pests, morphological and biochemical reaction of conifers to insect damage and industrial air pollution as well as systematic, anatomy, and ecology of the main pests of Siberian forests: Siberian moth, Fir sawyer beetle, and Altay sawyer beetle. Full bibliography of A.S. Rozkovs' publications is presented.

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