Assessing fixed depth carbon stocks in soils with varying horizon depths and thicknesses, sampled by horizon

Premrov, Alina; Cummins, Thomas; Byrne, Kenneth A.

doi:10.1016/j.catena.2016.11.030

Cited by 11 publications

(7 citation statements)

References 18 publications

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“…The smallest amounts of fine roots were found in the pasture area, and as the depth increased, the mean values of fine roots decreased Figure 2. These lower values can be explained by the degree of degradation in the area, as with the reduction of vegetation coverage, the amounts of roots also decreased (Premrov et al, 2017). According to Andrade et al, (2020), the amount of fine roots in pasture area ranged from 5.33 to 25.83 g, which are within values found in this study.…”

Section: Resultssupporting

confidence: 81%

Root biomass under different soil uses and native Cerrado in Tocantins, Brazil

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Araujo

Filho

et al. 2022

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Studies on the importance of root biomass and the effects that changes in vegetation coverage cause on carbon amount and stock are scarce, especially in the cerrado biome. Taking into account the scarcity of information about root biomass estimates, this work aimed to quantify root biomass under different land uses and native cerrado in Tocantins, Brazil. The research was conducted in different land uses: agriculture, pasture, eucalyptus and control with native cerrado forest. Six trenches with dimensions of 70 x 70 cm were opened and root biomass was collected at depths of 0-10, 10-20, 20-30, 30-40 and 40-50 cm. With the aid of a sieve, root biomass was collected and separated into fine and coarse roots. The amounts of fine and coarse root biomass showed the highest mean values of 7.7 and 12.9 g, respectively, in the eucalyptus area. Root biomass stocks were higher in the eucalyptus area, with maximum values above 3.68 Mg ha-1. Root biomass amounts and stocks were greater in eucalyptus areas, since forest areas, whether planted or native, manage to keep the environment in balance due to their long-term cycles, greater stability and low degree of disturbance.

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Section: Resultssupporting

confidence: 81%

Root biomass under different soil uses and native Cerrado in Tocantins, Brazil

Lima

Araujo

Filho

et al. 2022

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“…Nevertheless, the higher standard deviation in the erosion profile indicates that SOC redistribution processes have observable variability over time. In any case, the older 14 C age of the deeper SOC pool suggests that the different composition of its organic material can have different contributions (Ellerbrock et al 2016; Premrov et al 2017) depending on slope position. Bioturbation can also influence the results of SOC-age models, especially if it has different intensity on middleslope and downslope sites.…”

Section: Discussionmentioning

confidence: 99%

Reconstruction of Soil Carbon Redistribution Processes along a Hillslope Section in a Forested Area

2018

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The vertical distribution of soil organic carbon (SOC) with depth and its horizontal pattern is influenced by the topography and relief of the surface, due to lateral redistribution of soil material along slopes. Spatial and temproral variability of these changes is frequently due to human impacts on the landscape. In our study, the results of these processes were studied in detail in a small sub-catchment in a forested hillslope section using radiocarbon (14C) dating of SOC and embedded datable material (charcoal, artifacts) from soil profiles with colluvial accumulations. Events with accelerated material redistribution could be identified as an accumulation of a 40-cm-thick colluvial layer between cal BC 410–360 (2σ) and cal AD 430–580 (2σ). Later colluvial deposition resulted in thinner accumulations (cal AD 1120–1220 [2σ] 30 cm; cal AD 1810–1920 [2σ] 21 cm). As the earliest human impact, we found soil transformation from cal BC 1290–1130 (2σ). The depth-age model for SOC compiled according to the average SOC age and its depth showed different characteristics on middle-slope and down-slope position, with rates of 48.0 yr×cm–1 and 22.0 yr×cm–1 respectively, which indicates the importance of topographic position of soils in SOC redistribution processes.

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“…Soil organic carbon (SOC) concentrations were determined using the Walkley–Black method (Nelson & Sommers, 1996). The organic carbon density at each soil depth layer was calculated using the following equation (Premrov et al, 2017). The calculated values were converted into kg m −3 .

SOCVD = ((), \frac{% C}{100}) * italicpf * CCF,

Where : SOCVD is the volume‐based SOC density of the horizon (gC cm −3 ), % C is the C content in the fine earth (<2 mm), ρf is the soil bulk density of the fine‐earth material (g soil cm −3 ); CCF is the coarse fraction correction factor calculated using [(100 – % stones)/100].…”

Section: Methodsmentioning

confidence: 99%

“…Soil organic carbon (SOC) concentrations were determined using the Walkley-Black method (Nelson & Sommers, 1996). The organic carbon density at each soil depth layer was calculated using the following equation (Premrov et al, 2017). The calculated values were converted into kg m À3 .…”

Section: Laboratory Analysismentioning

confidence: 99%

Effects of altitude, aspect, and soil depth on carbon stocks and properties of soils in a tea plantation in the humid Black Sea region

Yüksek

2021

Land Degrad Dev

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Physiographic factors effectively alter soil properties and carbon storage. However, previous research on the effect of topographic factors affecting soil properties on carbon stocks in tea plantations has been limited in the humid Black Sea region. The aim of this study was to determine the effects of elevation, aspect, and soil depth on carbon stocks and soil properties of tea plantations in the Black Sea region. The tea plantations in the research area were divided into two elevation steps and two different aspect groups. Twelve soil sampling plots were then determined according to the stratified random sampling method in each elevation and aspect group; soil samples were taken at 0-10 cm and 10-30 cm soil depths. The amount of carbon stored at a soil depth of 30 cm was found to be 49.38 and 32.36 Mg C ha À1 at the upper and lower altitudes, respectively. Highest carbon density in the tea plantations in the research area was found to be 16.34 kg m À3 at a depth of 0-10 cm. The changes in the soil organic carbon (SOC) values according to elevation and soil depth were statistically significant, while the difference among the carbon storage values was not statistically significant. According to the results of our investigation, elevation is a more effective factor than aspect on SOC in tea plantation areas of highly humid climates.

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Assessing fixed depth carbon stocks in soils with varying horizon depths and thicknesses, sampled by horizon

Cited by 11 publications

References 18 publications

Root biomass under different soil uses and native Cerrado in Tocantins, Brazil

Root biomass under different soil uses and native Cerrado in Tocantins, Brazil

Reconstruction of Soil Carbon Redistribution Processes along a Hillslope Section in a Forested Area

Effects of altitude, aspect, and soil depth on carbon stocks and properties of soils in a tea plantation in the humid Black Sea region

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