Carbon sources and sinks in forest biomes of the former Soviet Union

Kolchugina, Tatyana P.; Vinson, Ted S.

doi:10.1029/93gb00571

Cited by 82 publications

(22 citation statements)

References 14 publications

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“…Number according to different authors, varies from 32.4 × 10 9 t C (Uglerod v ekosistemakh…, 1994) or 30.4 × 10 9 t C (Kolchugina et al, 1993a) to 19.5 × 10 9 t C , with the carbon pool in coarse woody debris being 17.6, 18.3, and 8.0 × 10 9 t C, respectively. The estimated carbon stock in the forest litter is 14.8 × 10 9 t (Uglerod v ekosistemakh…, 1994) or 12.2 × 10 9 t (Kolchugina et al, 1993a), and that in stable humus is 214 × 10 9 t (Kolchugina et al, 1993a).…”

Section: Resultsmentioning

confidence: 99%

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Dynamics of Carbon Pools and Fluxes in Russia's Forest Lands

et al. 2005

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The state and results of studies on the carbon cycle of forests on lands of the Russian forest fund (total area 1172 × 10 6 ha) are analyzed at the federal level. Consideration is given to changes in the areas of different categories of forest lands, the age structure of stands, the pool and deposition of carbon in the phytomass, and the organic carbon pool of soils over the period from 1966 to 1998; the dynamics of activity in the forest industry by years and the extent of pyrogenic transformation of the forest cover between 1990 and 2001; and carbon fluxes associated with forest exploitation, including carbon emission resulting from fires.

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Section: Resultsmentioning

confidence: 99%

“…The estimated carbon stock in the forest litter is 14.8 × 10 9 t (Uglerod v ekosistemakh…, 1994) or 12.2 × 10 9 t (Kolchugina et al, 1993a), and that in stable humus is 214 × 10 9 t (Kolchugina et al, 1993a).…”

Section: Resultsmentioning

confidence: 99%

Dynamics of Carbon Pools and Fluxes in Russia's Forest Lands

et al. 2005

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“…Estimated C densities for forests and woodlands were based on data for the growing stock volumes of commercial timber throughout the nation (USSR 1990, Kolchugina & Vinson 1993a. The estimate required conversion of growing stock volume to C densities for: (1) the main tree stem; (2) parts of trees other than stems; (3) ecosystem components other than trees; and (4) CWD accumulation.…”

Section: The Former Soviet Unionmentioning

confidence: 99%

“…Estimates of soil organic matter (SOM) for polar deserts, tundras, forests, and grasslands, were based on C densities from Kobak (1988) and areas by soil type (Ryabchikov 1988, Kolchugina & Vinson 1993a; Table 1). The area-weighted average SOM C content of the arable lands was calculated from the distribution of associated soil types (Cherdantsev 1961, Ryabchikov 1988 within the SU, as described in Kolchugina et al (1995).…”

Section: The Former Soviet Unionmentioning

confidence: 99%

Estimating the terrestrial carbon pools of the former Soviet Union, conterminous U.S., and Brazil

Turner¹,

Winjum²,

Kolchugina³

et al. 1998

Clim. Res.

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Terrestrial-carbon (C) pool sizes are of interest in relation to quantifying current sources and sinks of C, and evaluating the possibilities for future C sequestration or release by the biosphere. In this study, the C pools in the terrestrial ecosystems of the former Soviet Union (SU,), conterminous United States (US,), and Brazil were estimated for a nominal 1990 base year. Data sources included recent vegetation maps, resource inventories (particularly for forests), and published values for C densities (mass per unit area). Methodology varied by nation depending upon data availability but generally consisted of identifying a suitable land cover classification system, quantifying the area of each land cover type using traditional mapping approaches or satellite remote sensing, and assigning a mean C density to each cover type with separation by phytomass, litter plus coarse woody debris, and soil. Total organic C for the 3 geographic areas was estimated at 839 Pg (Pg = g X 1015) C in 1990. 38% of a literature-based estimate of the global terrestrial-C pool on an area representing 28% of the world's lands (excluding Antarctica). The soil C pool was the largest component in the SU, (84 % of the total) and US, (76%) but not in Brazil (47 %). Correspondingly, the proportion as phytomass was greatest in Brazil (48%) compared to the SU, (10%) and US, (17%). The forest land cover class contained by far the largest proportion of C among the land cover classes except in the SU, where peatlands were dominant with 37 % of the total. The 2 largest C pools isolated in this study are potentially long-term sources of C to the atmosphere: soil C in peatlands of SU, (212 Pg) which may be lost via climate change, and phytomass C in the tropical-moist forests of Brazil (l05 Pg) which may be lost via deforestation.

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“…In addition, forest floors were assumed to lose two-thirds of their preharvest C stock in all regions but the south, where it was assumed that site preparation practices caused the loss of the whole forest floor. These assumptions spread to Russia, as Kolchugina and Vinson (1993) provided early estimates of forest C sequestration for the former Soviet Union by applying Birdsey's (1992) rates of whole-system C accumulation to Russian forests. The estimates of both Birdsey (1992) and Kolchugina and Vinson (1993) were included in the synthesis of forest C sinks in the Northern Hemisphere by Dixon and others (1994), a widely cited reference for global-scale forest C uptake.…”

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confidence: 99%

Soil Carbon Dynamics after Forest Harvest: An Ecosystem Paradigm Reconsidered

2003

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In one of the most influential studies in the recent history of forest ecology, W. W. Covington (1981) described a pattern in organic matter storage in the forest floors of northern hardwood stands as a function of date of harvest. We review the history of the use and misuse of Covington's curve, describe the studies that tested and failed to support early interpretations of the curve, and provide some alternate interpretations. The curve suggested that forest floor organic matter declines by 50% within 20 years after harvest, and this decline was attributed to accelerated decomposition and changes in litter inputs after harvest. Subsequent studies showed that decomposition rates of surface litter generally decrease after clear-cutting, but accelerated decomposition remains possible in the Oe and Oa horizons. Changes in litter inputs are still difficult to evaluate, because the rate at which woody debris enters the forest floor is unknown. Although Covington attempted to minimize variation due to mechanical disturbance during logging, a reasonable alternative explanation for low organic matter in the forest floor of young stands is that surface material is mixed into mineral soil during harvesting operations. The pattern of forest floor organic matter in stands of different ages may be partly due to changes over time in logging technology and the intensity of biomass removal, in addition to successional effects. It is important to distinguish between mechanisms that release carbon to the atmosphere and those that transfer it to the mineral soil before making inferences about nutrient cycling and carbon sequestration.

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Carbon sources and sinks in forest biomes of the former Soviet Union

Cited by 82 publications

References 14 publications

Dynamics of Carbon Pools and Fluxes in Russia's Forest Lands

Dynamics of Carbon Pools and Fluxes in Russia's Forest Lands

Estimating the terrestrial carbon pools of the former Soviet Union, conterminous U.S., and Brazil

Soil Carbon Dynamics after Forest Harvest: An Ecosystem Paradigm Reconsidered

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