Estimating fine-root production by tree species and understorey functional groups in two contrasting peatland forests

Bhuiyan, Rabbil; Minkkinen, Kari; Helmisaari, Heljä‐Sisko; Ojanen, Paavo; Penttilä, Timo; Laiho, Raija

doi:10.1007/s11104-016-3070-3

Cited by 56 publications

(76 citation statements)

References 59 publications

(73 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Furthermore, a considerable quantity of carbon in the soil is allocated in the root biomass (Laiho & Finér, 1996; Bardulis, Jansons, & Liepa, 2012; Bardulis et al, 2015), especially through fine root production/ mortality. Fine roots may even contribute to ~ 70% from the total carbon cycle in forest ecosystem (Gower, Pongracic, & Landsberg, 1996;Bhuiyan et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

Soil carbon stock changes in transitional mire drained for forestry in Latvia: a case study

Lupikis¹,

Lazdiņš²

2017

Research for Rural Development

View full text Add to dashboard Cite

The aim of the study is to evaluate the impact of drainage on soil carbon stock in a transitional mire drained for forestry. The study site is located in the central part of Latvia representing hemiboreal vegetation zone. Site was drained in 1960. It is located in a catchment area of the river Veseta. An undrained site at the same catchment area was chosen for control (ca. 2.5 km between sites). In both sites, the depth of peat is 4 -4.5 m. Drained site is dominated by coniferous trees. Soil samples collected in 2014 were used to determine bulk density and carbon content, and to calculate soil carbon stock. Samples were collected down to 80 cm depth. Ground surface elevation was measured before and several times after the drainage to determine peat subsidence. Carbon stock has increased by 0.3 tons ha -1 yr 1 after drainage, although peat has subsided on average by 26 cm (13 -48 cm). Subsidence was mainly caused by physical shrinkage of peat not by organic matter oxidation. Drainage was followed by compaction of aerated soil layer, which has caused most of the subsidence, especially during the first years after drainage. Soil bulk density has increased almost twice at soil surface layer 0 -10 cm (from 75 kg m 3 to 141 kg m 3 ). Differences decrease at deeper sampling depths. It is concluded that drainage is not always followed by reduction of carbon stock in soil. Increased above and below ground litter production rates may offset accelerated decomposition of organic matter after drainage.

show abstract

Section: Resultsmentioning

confidence: 99%

Soil carbon stock changes in transitional mire drained for forestry in Latvia: a case study

Lupikis¹,

Lazdiņš²

2017

Research for Rural Development

View full text Add to dashboard Cite

show abstract

“…In the laboratory all roots were carefully separated from peat, divided according to species/functional groups (pine, spruce, birch, shrubs, grasses and herbs) and diameter (below and over 2 mm), dried in 105 °C and weighed. According to Bhuiyan et al (2016), 15 % of the 10 fine roots in Kalevansuo are located deeper than 20 cm. The biomasses estimated here were corrected accordingly.…”

Section: Organic Carbon Pools and Fluxesmentioning

confidence: 99%

“…Fine root litter production was estimated with root-ingrowth-cores by Bhuiyan et al (2016). Sixty cores (diameter 3 cm, length 50 cm) filled with Sphagnum peat were installed into soil in October 2009, and 20 cores were collected every year for three years.…”

Section: Organic Carbon Pools and Fluxesmentioning

confidence: 99%

“…Of the litter production by vascular plants, trees comprised 79% (aboveground) and 66% (belowground). Fine root production was estimated at 120 g C m -2 a -1 (Bhuiyan et al 2016), comprising 76% of the belowground litter.…”

Section: Carbon Balancementioning

confidence: 99%

“…Although Scots pine, the main tree species in Kalevansuo peatland, is a drought-tolerant species, summer droughts have been reported to decrease its radial growth in drained peatlands 10 (Huikari and Paarlahti 1967). The water table in Kalevansuo is usually rather high, which means that the roots of pines are located mainly in the top 40 cm (Bhuiyan et al 2016), in the oxic layer above the average water table. During drought, when water table may drop down to 80 cm for several weeks, even pines will probably suffer from water deficit, and close their stomata.…”

Section: Ecosystem Co2 Fluxes -The Effects Of Droughtmentioning

confidence: 99%

See 2 more Smart Citations

Carbon accumulation in a drained boreal bog was decreased but not stopped by seasonal drought

Minkkinen¹,

Ojanen²,

Penttilä³

et al. 2018

Preprint

Self Cite

View full text Add to dashboard Cite

Abstract. Drainage of peatlands is expected to turn these ecosystems to carbon sources to the atmosphere. We measured carbon dynamics of a drained forested peatland in southern Finland over four years, including one with severe drought during 10 growing season. Net ecosystem exchange (NEE) of carbon dioxide (CO2) was measured with eddy covariance method from a mast above the forest. Soil and forest floor CO2 and methane (CH4) fluxes were measured from the strips and from ditches with closed chambers. Biomasses and litter production were sampled, and soil subsidence was measured by repeated levellings of the soil surface. The drained peatland ecosystem was a strong sink of carbon dioxide in all studied years. Soil CO2 balance was estimated by subtracting the carbon sink of the growing tree stand from NEE, and it showed that also the soil was a sink 15 of carbon. A drought period in one summer significantly decreased the sink through decreased gross primary production.Drought also decreased ecosystem respiration. The site was a small sink for CH4, even when emissions from ditches were taken into account. Despite the continuous carbon sink, peat surface subsided slightly during the 10-year measurement period, which was probably mainly due to compaction of peat. It is concluded that even fifty years after drainage this peatland site acted as a soil C sink due to relatively small changes in water table and in plant community structure compared to similar 20 undrained sites, and the significantly increased tree stand growth and litter production. Although the site is currently a soil C sink, simulation studies with process models are needed to test whether such sites could remain C sinks when managed for forestry over several tree-stand rotations.

show abstract

The effect of drainage on fine‐root biomass, production, and turnover in hemiboreal old‐growth forests on organic soils

Samariks,

Ķēniņa,

Kitenberga

et al. 2024

Ecosphere

View full text Add to dashboard Cite

Information on the capacity of organic soils to capture and store carbon in old‐growth forests in the hemiboreal forest zone is scarce and fragmented. However, fine‐root data can provide valuable insights into soil carbon fluxes. Thus, the aim of the current study was to provide estimates of the fine‐root biomass (FRB), fine‐root production (FRP), and fine‐root turnover (FRT) rate by tree species and other functional groups in old‐growth (stand age 131–179 years) forests on mesotrophic organic soils dominated by Scots pine (Pinus sylvestris L.), with and without the effects of forest drainage. The sequential soil coring method was used to estimate the FRB and FRP. The total FRB was significantly higher in the undrained sites (6.8 ± 0.3 t ha−1) than in the drained sites (3.97 ± 0.1 t ha−1). The FRB of Scots pine in the undrained forest was significantly higher (1.7 ± 0.1 t ha−1) than in the drained forest (0.5 ± 0.1 t ha−1), supporting an extensive foraging strategy. The significantly higher mean FRB of Norway spruce (Picea abies [L.] Karst.) (1.4 ± 0.1 t ha−1) in the drained sites than the undrained sites (0.7 ± 0.2 t ha−1) can be explained by there being a higher proportion of spruce in the stand compositions, thus a higher standing volume of this species and an increased FRB. The FRB of dwarf shrubs (2.43 ± 0.2 t ha−1) formed the largest part of the total FRB in the undrained sites and the second largest (1.16 ± 0.1 t ha−1), following Norway spruce, in the drained sites. The total FRP was similar between the undrained (2.05 ± 0.31 t ha−1 year−1) and drained (1.82 ± 0.26 t ha−1 year−1) stands. However, considerable variability in the FRP was observed between different sites of the same forest site type. The FRT rate of Scots pine was twice as high in the drained sites than the undrained sites, suggesting faster nutrient and carbon input into the drained soil compared with the undrained soil. Estimates of FRB, FRP, and FRT rates for different functional groups can be used in carbon‐cycle modeling and in further calculations to estimate the carbon budget (balance) in forests on organic soils.

show abstract

Estimating fine-root production by tree species and understorey functional groups in two contrasting peatland forests

Cited by 56 publications

References 59 publications

Soil carbon stock changes in transitional mire drained for forestry in Latvia: a case study

Soil carbon stock changes in transitional mire drained for forestry in Latvia: a case study

Carbon accumulation in a drained boreal bog was decreased but not stopped by seasonal drought

The effect of drainage on fine‐root biomass, production, and turnover in hemiboreal old‐growth forests on organic soils

Contact Info

Product

Resources

About