A novel single-run dual temperature combustion (SRDTC) method for the determination of organic, in-organic and total carbon in soil samples

Bisutti, Isabella; Hilke, Ines; Schumacher, Jens; Raessler, M.

doi:10.1016/j.talanta.2006.04.022

Cited by 29 publications

(17 citation statements)

References 17 publications

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“…The carbonate C concentrations of the samples were determined using the same instrument after combustion of the soil samples at 530°C. According to Bisutti et al (2007), all organic C is removed at this temperature, while the C in carbonate is not affected by combustion. The organic C concentration of the sample was calculated from the difference between total and carbonate C. We calculated the C stocks of the soil up to a depth of 1 m based on the C concentrations, the thickness and the bulk densities of each soil horizon.…”

Section: Methodsmentioning

confidence: 80%

Organic matter distribution in floodplains can be predicted using spatial and vegetation structure data

Cierjacks

Kleinschmit

Kowarik

et al. 2011

River Research & Apps

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Riparian forest ecosystems play a significant role in the storage of organic carbon. However, the knowledge on the spatial patterns of organic matter distribution which is crucial to the assessment of the C sequestration potential of riparian ecosystems is still lacking. The aim of our study was to identify predictors of organic matter distribution in floodplain soils and vegetation. We analysed the depth distribution of soil horizons to 1 m below the surface, calculated the organic C content and quantified living biomass and woody debris at 67 sampling plots in the Donau-Auen National Park (Austria) along principle spatial gradients (longitudinal, lateral and vertical to river direction). Multiple regression models were fitted using hierarchical partitioning of spatial information, which was supplemented by forest stand parameters as possible predictors of soil C. The concentration of organic C in the subsoil horizons increased significantly with distance to the main channel. In addition, the thickness of soil horizons enriched with organic matter increased downstream which probably indicates the effect of riverbed changes over the last two centuries. Model prediction of soil parameters was improved with the inclusion of vegetation structure variables which are a consequence of local river dynamics. Highly dynamic locations indicated by higher stem numbers, greater understory vegetation cover, lower mean stem diameter and lower canopy cover showed significantly lower concentrations of soil organic C and lower total organic C stocks. We conclude that spatial information and vegetation structure can indicate gradients of geomorphic floodplain dynamic, which is the main driver of organic matter storage.

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Section: Methodsmentioning

confidence: 80%

Organic matter distribution in floodplains can be predicted using spatial and vegetation structure data

Cierjacks

Kleinschmit

Kowarik

et al. 2011

River Research & Apps

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“…An aliquot of each sieved sample was milled in a planetary ball mill and analysed by dry combustion for total C and total N (TruMac CN LECO, St. Joseph, MI, USA). Samples with a pH value of >6 were analysed for carbonates after ignition of the sample at 450 °C for 16 h in a muffle kiln (Bisutti et al ., ). The SOC concentration was then calculated by subtracting carbonatic C from total C and expressed as g SOC kg −1 soil dry matter.…”

Section: Methodsmentioning

confidence: 97%

Deep ploughing increases agricultural soil organic matter stocks

Alcántara¹,

Don²,

Well³

et al. 2016

Global Change Biology

135

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Subsoils play an important role within the global C cycle, since they have high soil organic carbon (SOC) storage capacity due to generally low SOC concentrations. However, measures for enhancing SOC storage commonly focus on topsoils. This study assessed the long-term storage and stability of SOC in topsoils buried in arable subsoils by deep ploughing, a globally applied method for breaking up hard pans and improving soil structure to optimize crop growing conditions. One effect of deep ploughing is translocation of SOC formed near the surface into the subsoil, with concomitant mixing of SOC-poor subsoil material into the 'new' topsoil. Deep-ploughed croplands represent unique long-term in situ incubations of SOC-rich material in subsoils. In this study, we sampled five loamy and five sandy soils that were ploughed to 55-90 cm depth 35-50 years ago. Adjacent, similarly managed but conventionally ploughed subplots were sampled as reference. The deep-ploughed soils contained on average 42 ± 13% more SOC than the reference subplots. On average, 45 years after deep ploughing, the 'new' topsoil still contained 15% less SOC than the reference topsoil, indicating long-term SOC accumulation potential in the topsoil. In vitro incubation experiments on the buried sandy soils revealed 63 ± 6% lower potential SOC mineralisation rates and also 67 ± 2% lower SOC mineralisation per unit SOC in the buried topsoils than in the reference topsoils. Wider C/N ratio in the buried sandy topsoils than in the reference topsoils indicates that deep ploughing preserved SOC. The SOC mineralisation per unit SOC in the buried loamy topsoils was not significantly different from that in the reference topsoils. However, 56 ± 4% of the initial SOC was preserved in the buried topsoils. It can be concluded that deep ploughing contributes to SOC sequestration by enlarging the storage space for SOC-rich material.

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“…Soil organic (SOC) and inorganic carbon (SIC) contents were measured in each of the aggregate‐size classes ( n =200) by the dry combustion method, based on the different thermal behaviour of SOC and SIC fractions (Bisutti et al, ). We used a multiphase LECO RC‐612 carbon analyzer (LECO Corporation, St. Joseph, MI, USA) that identifies different forms of carbon by their oxidation temperature (Tiessen and Moir, ).…”

Section: Methodsmentioning

confidence: 99%

Soil particle size distribution and induced soil carbon transport by ephemeral gully erosion in Mediterranean mountain arable land

Quijano

Kuhn

Navas

2019

Earth Surf Processes Landf

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In Mediterranean mountain agroecosystems, soil erosion associated with the development of ephemeral gullies is a common environmental problem that contributes to a loss of nutrient‐rich topsoil. Little is known about the influence of ephemeral gully erosion on particle size distribution and its effect on soil organic (SOC) and inorganic (SIC) carbon among different sized soil particles in agricultural soils. In this study, laboratory tests were conducted using velocity settling tube experiments to examine the effects of erosion on sediment particle size distributions from an incised ephemeral gully, associated with an extreme event (235 mm). We also consider subsequent deposition on an alluvial fan in order to assess the distribution of SOC and SIC concentrations and dissolved carbon before and after the extreme event. Soil fractionation was carried out on topsoil samples (5 cm) collected along an ephemeral gully in a cultivated field, located in the lower part of a Mediterranean mountain catchment. The results of this study showed that the sediment transported downstream by runoff plays a key role in the particle size distribution and transportability of soil particles and associated carbon distribution in carbonate rich soils. The eroding sediment is enriched in clay and silt‐sized particles at upslope positions with higher SOC contents and gradually becomes coarser and enriched in SIC at the end of the ephemeral gully because the finest particles are washed‐out of the study field. The extreme event was associated with an accumulation of dissolved organic carbon at the distal part of the depositional fan. Assessment of soil particle distribution using settling velocity experiments provides basic information for a better understanding of soil carbon dynamics in carbonate rich soils. Processes of soil and carbon transport and relationships between soil properties, erodibility and aggregate stability can be helpful in the development of more accurate soil erosion models. © 2019 John Wiley & Sons, Ltd. © 2019 John Wiley & Sons, Ltd.

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A novel single-run dual temperature combustion (SRDTC) method for the determination of organic, in-organic and total carbon in soil samples

Cited by 29 publications

References 17 publications

Organic matter distribution in floodplains can be predicted using spatial and vegetation structure data

Organic matter distribution in floodplains can be predicted using spatial and vegetation structure data

Deep ploughing increases agricultural soil organic matter stocks

Soil particle size distribution and induced soil carbon transport by ephemeral gully erosion in Mediterranean mountain arable land

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