Stability of Soil Carbon Stocks Varies with Forest Composition in the Canadian Boreal Biome

Laganière, Jérôme; Paré, David; Bergeron, Yves; Chen, Han Y. H.; Brassard, Brian W.; Cavard, Xavier

doi:10.1007/s10021-013-9658-z

Cited by 71 publications

(41 citation statements)

References 55 publications

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“…Spatial variability of organic matter stocks and turnover in different types of ecosystem depend on many factors (air temperature, aboveground vegetation composition, soil type, soil moisture regime etc. -Kammer et al 2009, Laganière et al 2013. Mountain ecosystems are highly sensitive to environmental changes (Kör-ner & Paulsen 2004).…”

Section: Introductionmentioning

confidence: 99%

Carbon storage and soil property changes following afforestation in mountain ecosystems of the Western Rhodopes, Bulgaria

Zhiyanski¹,

Glushkova²,

Ferezliev³

et al. 2016

iForest

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Land-use changes and afforestation activities are widely recognized as possible measures for mitigating climate change through carbon sequestration. The present study was conducted to evaluate the effect of afforestation on (i) soil physical and chemical properties and soil carbon stocks in four mountain ecosystems and (ii) whole ecosystem carbon storage. The four experimental sites, situated in the Western Rhodope Mountains (Bulgaria) were characterized by typical forest-related land-use conversions. The four sites were a Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) plantation (Rd1) established on former cropland, a mixed black pine (Pinus nigra Arn.) with Scots pine (Pinus sylvestris L.) plantation (Rd2) established on former cropland, a cropland (RdA1) and an abandoned land with uncontrolled extensive grazing (RdA2) historically used as cropland. Soil parameters, i.e., sand content, pH, organic C and N contents, C/N ratio and soil organic carbon (SOC) stocks, were significantly affected by land use and land-use history. Conversion from cropland into forestland significantly reduced soil bulk density and coarse fragments at 0-10 cm depth. Compared with adjacent cropland and abandoned land, soils in coniferous plantations were acidified in their upper layers. Sites Rd2 and RdA2 contained the least SOC owing to the previous long-term arable cultivation (>100 years). Analysis of the ecosystem C stock distribution revealed that most of C in forests was stored in the aboveground tree biomass. Our study confirmed that afforestation of cropland turned the soil into a C sink for the selected mountain region, but showed conflicting results when afforestation occurred on abandoned cropland.

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Section: Introductionmentioning

confidence: 99%

Carbon storage and soil property changes following afforestation in mountain ecosystems of the Western Rhodopes, Bulgaria

Zhiyanski¹,

Glushkova²,

Ferezliev³

et al. 2016

iForest

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“…These changes can strongly influence the stocks and stability of SOC (Nave et al, 2010;Laganière et al, 2013). As an example, Nave et al (2010) found that the size of C pools responds differently to harvesting and disturbance, and that losses are significantly smaller in mixed conifer stands than in hardwood stands.…”

Section: Introductionmentioning

confidence: 99%

“…As an example, Nave et al (2010) found that the size of C pools responds differently to harvesting and disturbance, and that losses are significantly smaller in mixed conifer stands than in hardwood stands. In the Canadian boreal forest, Laganière et al (2013) Lamb.] stands.…”

Section: Introductionmentioning

confidence: 99%

Disturbance Legacy on Soil Carbon Stocks and Stability within a Coastal Temperate Forest of Southwestern British Columbia, Canada

Defrenne¹,

Wilson²,

Simard³

et al. 2016

OJF

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“…In the mineral soil, the persistence of SOC is further enhanced by the mineral matrix through additional protection mechanisms, such as the isolation of organic matter inside aggregates (i.e., physical protection) and surface interactions between organic compounds and mineral particles, mainly from the silt and clay fraction (i.e., chemical protection) [12]. The interaction of these protection mechanisms and soil microclimate creates a continuum of SOC pools with different chemical composition and residence time [13,14] that differs among forest species [7,15].…”

Section: Introductionmentioning

confidence: 99%

“…A shift towards mixed and conifer-dominated stands could thus modify SOC dynamics and potentially reduce long-term SOC storage (i.e., SOC sequestration potential). Several studies have addressed the properties of SOC under mixed aspen-conifer stands in the boreal climate [15,30], but studies of SOC storage and stability in mixed stands in semi-arid climates are largely missing. In particular, we do not know whether changes in SOC properties occur gradually or abruptly at critical composition thresholds.…”

Section: Introductionmentioning

confidence: 99%

Soil Organic Carbon Storage and Stability in the Aspen-Conifer Ecotone in Montane Forests in Utah, USA

Dobarco

Miegroet²

2014

Forests

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Abstract:To assess the potential impact of conifer encroachment on soil organic carbon (SOC) dynamics and storage in montane aspen-conifer forests from the interior western US, we sampled mineral soils (0-15 cm) across the aspen-conifer ecotones in southern and northern Utah and quantified total SOC stocks, stable SOC (i.e., mineral-associated SOC (MoM)), labile SOC (i.e., light fraction (LF), decomposable (CO 2 release during long-term aerobic incubations) and soluble SOC (hot water extractable organic carbon (HWEOC)). Total SOC storage (47.0 ± 16.5 Mg C ha −1 ) and labile SOC as LF (14.0 ± 7.10 Mg C ha −1 ), SOC decomposability (cumulative released CO 2 -C of 5.6 ± 3.8 g C g −1 soil) or HWEOC (0.6 ± 0.6 mg C g −1 soil) did not differ substantially with vegetation type, although a slight increase in HWEOC was observed with increasing conifer in the overstory. There were statistically significant differences (p = 0.035) in stable MoM storage, which was higher under aspen (31.2 ± 15.1 Mg C ha −1 ) than under conifer (22.8 ± 9.0 Mg C ha −1 ), with intermediate values under mixed (25.7 ± 8.8 Mg C ha −1 ). Texture had the greatest impact on SOC distribution among labile and stable fractions, with increasing stabilization in MoM and decreasing bio-availability of SOC with increasing silt + clay content. Only at lower silt + clay contents (40%-70%) could we discern the influence of vegetation on MoM content. This highlights the importance of chemical protection mechanisms for long-term C sequestration.

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Stability of Soil Carbon Stocks Varies with Forest Composition in the Canadian Boreal Biome

Cited by 71 publications

References 55 publications

Carbon storage and soil property changes following afforestation in mountain ecosystems of the Western Rhodopes, Bulgaria

Carbon storage and soil property changes following afforestation in mountain ecosystems of the Western Rhodopes, Bulgaria

Disturbance Legacy on Soil Carbon Stocks and Stability within a Coastal Temperate Forest of Southwestern British Columbia, Canada

Soil Organic Carbon Storage and Stability in the Aspen-Conifer Ecotone in Montane Forests in Utah, USA

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