How much carbon can the Siberian boreal taiga store: a case study of partitioning among the above-ground and soil pools

Gavrikov, Vladimir L.; Шарафутдинов, Р А; Knorre, Anastasyia A.; Пахарькова, Н. В.; Шабалина, О М; Bezkorovaynaya, I. N.; Борисова, И В; Ерунова, Марина Г.; Khlebopros, R. G.

doi:10.1007/s11676-015-0189-7

Cited by 11 publications

(3 citation statements)

References 12 publications

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“…In any case, the drought frequency increases in Polar and Siberian landscapes, and further estimates of SOM quality and its stability to mineralization processes should be provided in the near future. The Russian peatlands play a critical role in the formation of global and regional storages of carbon dioxide; thus the organic matter stabilization rates and possible risk of C pools huge losses from soil due to wildfires should be precisely estimated [48][49][50][51]. In this context, the data obtained for the Shatura south-taiga peatlands provide essential information about SOM alteration during the fire effect.…”

Section: Discussionmentioning

confidence: 99%

Laboratory Assessment of Forest Soil Respiration Affected by Wildfires under Various Environments of Russia

Abakumov¹,

Maksimova²,

Tsibart³

et al. 2017

International Journal of Ecology

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Pyrogenic carbon emission rates were estimated in the soils of three natural zones in Russia: forest-tundra, south-taiga, and foreststeppe. Postfire soils were found to be characterized by essential losses of soil C due to the combustion fire effect. Soils lost 3 or 5 parts of initial carbon content and showed an essential decrease in the C/N ratio during the fire effect. The pH values increased due to soil enrichment by ash during the fire events. CO 2 emission rates were highest in natural soil samples, because the amount of organic matter affected by mineralization in those soils was higher than in natural ones. Simultaneously, the total values of mineralized carbon were higher in postfire soils because the SOM quality and composition were altered due to the fire effect. The only exception was in forest-tundra soils, where a high portion of dissolved organic compounds was released during the surface fire. The quality of initial SOM and intensity of the wildfire play the most important roles in the fate of SOM in postfire environments. Further study of CO 2 emissions is needed to better characterize postfire SOM dynamics and develop an approach to model this process.

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Section: Discussionmentioning

confidence: 99%

Laboratory Assessment of Forest Soil Respiration Affected by Wildfires under Various Environments of Russia

Abakumov¹,

Maksimova²,

Tsibart³

et al. 2017

International Journal of Ecology

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“…Besides land management measures, many other factors are known to influence forest carbon density, including climate (Dai et al 2015;Stegen et al 2011), forest age (Guan et al 2015;Zald et al 2016), forest structure (Akers et al 2013;Laganière et al 2015;Lamsal et al 2011), and soil type (Gavrikov et al 2015;Li and Liu 2014;Piao et al 2009). However, relatively few studies have quantified how environmental factors influence forest carbon density (Vieilledent et al 2016;Wen and He 2016) in mountain regions that have a mixture of natural and planted forests.…”

Section: Introductionmentioning

confidence: 99%

Similar carbon density of natural and planted forests in the Lüliang Mountains, China

Wang

2018

Annals of Forest Science

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& Key message The carbon density was not different between natural and planted forests, while the biomass carbon density was greater in natural forests than in planted forests. The difference is due primarily to the larger carbon density in the standing trees in natural forests compared to planted forests (at an average age of 50.6 and 15.7 years, respectively). & Context Afforestation and reforestation programs might have noticeable effect on carbon stock. An integrated assessment of the forest carbon density in mountain regions is vital to evaluate the contribution of planted forests to carbon sequestration. & Aims We compared the carbon densities and carbon stocks between natural and planted forests in the Lüliang Mountains region where large-scale afforestation and reforestation programs have been implemented. The introduced peashrubs (Caragana spp.), poplars (Populus spp.), black locust (Robinia pseudoacacia), and native Chinese pine (Pinus tabulaeformis) were the four most common species in planted forests. In contrast, the deciduous oaks (Quercus spp.), Asia white birch (Betula platyphylla), wild poplar (Populus davidiana), and Chinese pine (Pinus tabulaeformis) dominated in natural forests. & Methods Based on the forest inventory data of 3768 sample plots, we estimated the values of carbon densities and carbon stocks of natural and planted forests, and analyzed the spatial patterns of carbon densities and the effects of various factors on carbon densities using semivariogram analysis and nested analysis of variance (nested ANOVA), respectively. & Results The carbon density was 123.7 and 119.7 Mg ha −1 for natural and planted forests respectively. Natural and planted forests accounted for 54.8% and 45.2% of the total carbon stock over the whole region, respectively. The biomass carbon density (the above-and belowground biomass plus dead wood and litter biomass carbon density) was greater in natural forests than in planted forests (22.5 versus 13.2 Mg ha −1). The higher (lower) spatial carbon density variability of natural (planted) forests was featured with a much smaller (larger) range value of 32.7 km (102.0 km) within which a strong (moderate) spatial autocorrelation could be observed. Stand age, stand density, annual mean temperature, and annual precipitation had statistically significant effects on the carbon density of all forests in the region. & Conclusion No significant difference was detected in the carbon densities between natural and planted forests, and planted forests have made a substantial contribution to the total carbon stock of the region due to the implementation of large-scale afforestation and reforestation programs. The spatial patterns of carbon densities were clearly different between natural and planted forests. Stand age, stand density, temperature, and precipitation were important factors influencing forest carbon density over the mountain region.

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“…In such low-fallout forested areas, valuable results may be obtained that elucidate biogeochemical cycle functioning and serve as a basis for erosion monitoring. Also, recordings of levels of 137 Cs activity in landscapes may be integrated into databases of international programs such as EMRAS II (Stocki et al, 2011), MODARIA (IAEA, 2012-2015, BORIS (Tamponnet et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Turnover of 137 Cs in ‘soil–tree’ system: An experience of measuring the isotope flows in a Siberian conifer forest

Gavrikov

Шарафутдинов

Mitev

2016

Journal of Environmental Radioactivity

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Little attention has been paid to the uptake of Cs in natural forests under low levels of the isotope fallout when no immediate ecological danger presents. Here we present the extended assessments of the soil-to-plant and canopy-to-litter flows ofCs recently evaluated in a native Siberian forested area. The area undergoes a typical after-fire long term succession, with light-conifer upper story being followed by undergrowth of Siberian fir and other dark-conifer species. The one-year-old needles of Siberian fir were found to accumulate the largest concentration of the isotope, 4.10 Bq/kg oven-dry weight during the first growth season, as compared with older needles that accumulated 4.67 Bq/kg oven-dry weight in 2-3 years of growth. Based on these data an approach was developed that, hypothetically, can allow one to estimate the Cs activity concentration in soil solutions. Direct activity measurements in the soil solutions were not possible. The isotope activity in soil solutions was estimated to be 0.0061-0.0105 Bq/L. Based on the original data from the litter fall the annual flow of the isotope from the upper canopy to on-ground litter was found to be 0.42-0.84 Bq/m. The amount of Cs that returns yearly back from canopy with falling litter was estimated to be 0.012-0.015% of the total soil isotope content. A combination of the estimations obtained in our study with the values of globalCs fallout allowed us to assess the ages (the time of formation) of horizons of the soils in the area.

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How much carbon can the Siberian boreal taiga store: a case study of partitioning among the above-ground and soil pools

Cited by 11 publications

References 12 publications

Laboratory Assessment of Forest Soil Respiration Affected by Wildfires under Various Environments of Russia

Laboratory Assessment of Forest Soil Respiration Affected by Wildfires under Various Environments of Russia

Similar carbon density of natural and planted forests in the Lüliang Mountains, China

Turnover of 137 Cs in ‘soil–tree’ system: An experience of measuring the isotope flows in a Siberian conifer forest

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