Methane and nitrous oxide emissions from mature forest stands in the boreal forest, Saskatchewan, Canada

Matson, Amanda; Pennock, D.J.; Bedard‐Haughn, Angela

doi:10.1016/j.foreco.2009.05.034

Cited by 63 publications

(52 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Emissions of nitrous oxide were small as also found for other well drained forest soils (Von Arnold et al 2005, Tate et al 2006, Matson et al 2009). Values were slightly lower in the stump removal plots but when taking into account the difference in the extent of the exposed mineral soil between the treatments, the difference in the N 2 O emissions practically disappeared.…”

Section: Discussionsupporting

confidence: 66%

“…Values were slightly lower in the stump removal plots but when taking into account the difference in the extent of the exposed mineral soil between the treatments, the difference in the N 2 O emissions practically disappeared. Although our gas measurement data were limited, it can be concluded that excluding CO 2 stump removal seems not to significantly affect the fluxes of the two other common greenhouse gases previously measured in boreal forests (Tate et al 2006, Matson et al 2009). …”

Section: Discussionmentioning

confidence: 75%

See 1 more Smart Citation

Responses of soil carbon and nitrogen transformations to stump removal

Kataja-aho¹,

Smolander²,

Fritze³

et al. 2012

Silva Fenn.

View full text Add to dashboard Cite

We studied in central Finland whether stump harvesting after clear felling of coniferous forest poses further short-term changes in soil carbon and nitrogen dynamics when compared to the traditional site preparation method, mounding. Exposed mineral soil patches in Norway spruce (Picea abies) dominated clear-cut stands were sampled 1â5 years after the treatments. The extent of the exposed mineral soil surface was significantly larger at the stump removal sites when compared to the mounding sites. No differences were found in soil pH, organic matter content or total concentration of soil C between the treatments or treatment years. Total concentration of soil N was consistently higher and C:N ratio lower in the stump removal plots than in the mounded plots. Further, both net N mineralisation and nitrification were clearly increased in the stump removal plots one year after the treatments. Soil microbial activity (CO production) was higher in the stump removal plots but similar difference was not found in sieved soil samples incubated in the laboratory. Fluxes of other important greenhouse gases (CH and NO) did not seem to be affected by stump removal. The differences between the stump removal and mounding procedures were most obviously attributed to more substantial soil disturbance by stump pulling and/or differences in the microbial communities and quality of soil organic matter in the differently treated soil.242

show abstract

Section: Discussionsupporting

confidence: 66%

Section: Discussionmentioning

confidence: 75%

Responses of soil carbon and nitrogen transformations to stump removal

Kataja-aho¹,

Smolander²,

Fritze³

et al. 2012

Silva Fenn.

View full text Add to dashboard Cite

show abstract

“…This is in contrast to many field studies that have observed CH 4 uptake (oxidation) in dry boreal sites (Matson et al, 2009;Schaufler et al, 2010). Anoxic microsites in soil can however provide enough CH 4 production to balance low-level consumption in otherwise aerobic soils (Kammann et al, 2009).…”

Section: Discussionmentioning

confidence: 62%

Temperature and moisture effects on greenhouse gas emissions from deep active-layer boreal soils

2016

View full text Add to dashboard Cite

Abstract. Rapid climatic changes, rising air temperatures, and increased fires are expected to drive permafrost degradation and alter soil carbon (C) cycling in many high-latitude ecosystems. How these soils will respond to changes in their temperature, moisture, and overlying vegetation is uncertain but critical to understand given the large soil C stocks in these regions. We used a laboratory experiment to examine how temperature and moisture control CO 2 and CH 4 emissions from mineral soils sampled from the bottom of the annual active layer, i.e., directly above permafrost, in an Alaskan boreal forest. Gas emissions from 30 cores, subjected to two temperatures and either field moisture conditions or experimental drought, were tracked over a 100-day incubation; we also measured a variety of physical and chemical characteristics of the cores. Gravimetric water content was 0.31 ± 0.12 (unitless) at the beginning of the incubation; cores at field moisture were unchanged at the end, but drought cores had declined to 0.06 ± 0.04. Daily CO 2 fluxes were positively correlated with incubation chamber temperature, core water content, and percent soil nitrogen. They also had a temperature sensitivity (Q 10 ) of 1.3 and 1.9 for the field moisture and drought treatments, respectively. Daily CH 4 emissions were most strongly correlated with percent nitrogen, but neither temperature nor water content was a significant first-order predictor of CH 4 fluxes. The cumulative production of C from CO 2 was over 6 orders of magnitude higher than that from CH 4 ; cumulative CO 2 was correlated with incubation temperature and moisture treatment, with drought cores producing 52-73 % lower C. Cumulative CH 4 production was unaffected by any treatment. These results suggest that deep active-layer soils may be sensitive to changes in soil moisture under aerobic conditions, a critical factor as discontinuous permafrost thaws in interior Alaska. Deep but unfrozen high-latitude soils have been shown to be strongly affected by long-term experimental warming, and these results provide insight into their future dynamics and feedback potential with future climate change.

show abstract

“…Thus tree species selection is closely related to the GHG benefit of afforestation. There were significant differences in CH 4 fluxes in aspen, black spruce and jack pine stands (4.40 g C m −2 yr −1 ,−0.017 g C m -2 yr -1 ,−0.123 g C m −2 yr −1 , respectively) (Matson et al 2009). Butterbach-Bahl et al (2002) reported three to eleven times greater N 2 O emission rates for beech (1.6 to 6.6 kg N ha −1 yr −1 ) than for adjacent spruce stands (0.4 to 3.1 kg N ha −1 yr −1 ).…”

Section: Introductionmentioning

confidence: 94%

Soil-atmosphere exchange of greenhouse gases in subtropical plantations of indigenous tree species

Wang

Liu

et al. 2010

Plant Soil

View full text Add to dashboard Cite

Indigenous broadleaf plantations are increasingly developing as a prospective silvicultural management approach for substituting in place of large pure conifer plantations in subtropical China. However, little information is known about the effects of tree species conversion on soil-atmosphere greenhouse gas (GHG) exchanges. Four adjacent monospecific plantations were selected in subtropical China to examine the effects of tree species on soilatmosphere exchanges of N 2 O, CH 4 and CO 2 . One coniferous plantation was composed of Pinus massoniana (PM), and the three broadleaf plantations were Castanopsis hystrix (CH), Michelia macclurei (MM) and Mytilaria laosensis (ML). We found that mean soil N 2 O and CO 2 emissions in the PM plantation were 4.34 μg N m −2 h −1 and 43.25 mg C m −2 h −1 , respectively, lower than those in the broadleaf plantations (>5.25 μg N m −2 h −1 and >56.38 mg C m −2 h −1 ). The PM plantation soil had higher mean CH 4 uptake (39.03 μg C m −2 h −1 ) than the broadleaf plantation soils (<32.67 μg C m −2 h −1 ). Variations in soil N 2 O emissions among tree species could be primarily explained by the differences in litter C:N ratio and soil total N stock. Differences in soil CH 4 uptake among tree species could be mostly attributed to the differences in mean soil CO 2 flux and water filled pore space (WFPS). Litter C:N ratio could largely account for variations in soil CO 2 emissions among tree species. This study confirms that there is no GHG benefit of converting PM plantation to broadleaf plantations in subtropical China. Therefore, the future strategy of tree species selection for substituting in place of large coniferous plantations in subtropical China needs to consider the potential effects of tree species on soil-atmosphere GHG exchanges.

show abstract

Methane and nitrous oxide emissions from mature forest stands in the boreal forest, Saskatchewan, Canada

Cited by 63 publications

References 46 publications

Responses of soil carbon and nitrogen transformations to stump removal

Responses of soil carbon and nitrogen transformations to stump removal

Temperature and moisture effects on greenhouse gas emissions from deep active-layer boreal soils

Soil-atmosphere exchange of greenhouse gases in subtropical plantations of indigenous tree species

Contact Info

Product

Resources

About