Search Results - "Skjemstad, J. O."

Black Carbon Increases Cation Exchange Capacity in Soils by Liang, B., Lehmann, J., Solomon, D., Kinyangi, J., Grossman, J., O'Neill, B., Skjemstad, J. O., Thies, J., Luizão, F. J., Petersen, J., Neves, E. G.

“…Black Carbon (BC) may significantly affect nutrient retention and play a key role in a wide range of biogeochemical processes in soils, especially for nutrient…”
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Chemical and Biological Characteristics of Physically Uncomplexed Organic Matter by Gregorich, E.G, Beare, M.H, McKim, U.F, Skjemstad, J.O

“…Physical fractionation methods are based on the premise that soil organic matter (SOM) can be divided into pools of functional relevance. Physically…”
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Formation, transformation and transport of black carbon (charcoal) in terrestrial and aquatic ecosystems by Forbes, M.S., Raison, R.J., Skjemstad, J.O.

“…Black carbon (BC) is ubiquitous in terrestrial environments and its unique physical and chemical properties suggest that it may play an important role in the…”
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Visible, near infrared, mid infrared or combined diffuse reflectance spectroscopy for simultaneous assessment of various soil properties by Viscarra Rossel, R.A., Walvoort, D.J.J., McBratney, A.B., Janik, L.J., Skjemstad, J.O.

“…Historically, our understanding of the soil and assessment of its quality and function has been gained through routine soil chemical and physical laboratory…”
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Role of the soil matrix and minerals in protecting natural organic materials against biological attack by Baldock, J.A, Skjemstad, J.O

“…Natural organic materials in soils consist of a complex mixture of different biochemicals exhibiting numerous morphologies and stages of biological oxidation…”
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Soil organic carbon and black carbon storage and dynamics under different fire regimes in temperate mixed-grass savanna by Ansley, R. J., Boutton, T. W., Skjemstad, J. O.

“…We quantified the effects of repeated, seasonal fires on soil organic carbon (SOC), black carbon (BC), and total N in controls and four fire treatments…”
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Charred organic carbon in German chernozemic soils by Schmidt, M. W. I., Skjemstad, J. O., Gehrt, E., Kögel-Knabner, I.

“…Summary Burning vegetation produces partly charred plant material which subsequently could contribute to the highly refractory proportion of soil organic…”
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Minor changes in soil organic carbon and charcoal concentrations detected in a temperate deciduous forest a year after an experimental slash-and-burn by Eckmeier, E., Gerlach, R., Skjemstad, J. O., Ehrmann, O., Schmidt, M. W. I.

“…Anthropogenic fires affected the temperate deciduous forests of Central Europe over millennia. Biomass burning releases carbon to the atmosphere and produces…”
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Mechanisms of protection of soil organic matter under pasture following clearing of rainforest on an Oxisol by Skjemstad, J.O., Krull, E.S., Swift, R.S., Szarvas, S.

“…Vegetation change from rainforest (C3) to pasture (C4) was used to study the nature and capacity for organic matter protection in an Oxisol from eastern…”
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Compositional relationships between organic matter in a grassland soil and its drainage waters by Hayes, T.M, Hayes, M.H.B, Skjemstad, J.O, Swift, R.S

“…We present a novel study of the compositional relationships between soil organic components extractable in aqueous extractants and those in sub-soil drainage…”
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Estimation of charcoal (char) in soils by Skjernstad, J.O., Taylor, J.A., Smernik, R.J.

“…A method for the semiquantitative estimation of charcoal (char) in soils is reported. The technique, performed on the <53 μm fraction of soils, utilizes the…”
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Detection of charred organic matter in soils from a Neolithic settlement in Southern Bavaria, Germany by Schmid, E.-M, Skjemstad, J.O, Glaser, B, Knicker, H, Kögel-Knabner, I

“…The amount and chemical structure of the aromatic carbon fraction in archaeological soil materials was investigated. Samples from several Neolithic pits and a…”
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Quantification of carbon derived from lignite in soils using mid-infrared spectroscopy and partial least squares by Rumpel, C., Janik, L.J., Skjemstad, J.O., Kögel-Knabner, I.

“…The total organic carbon (TOC) of many recultivated mine soils is composed of a fraction that is lignite-derived as well as a fraction that is derived from…”
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Types and chemical composition of organic matter in reforested lignite-rich mine soils by Rumpel, C., Knicker, H., Kögel-Knabner, I., Skjemstad, J.O., Hüttl, R.F.

“…In the post-mining landscapes of Lusatia, forest soils develop from extremely acid, lignite-rich open cast mine spoils. The sites have been ameliorated with…”
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Effect of land-use history on the potential for carbon sequestration in an Alfisol by Churchman, G.J., Foster, R.C., D’Acqui, L.P., Janik, L.J., Skjemstad, J.O., Merry, R.H., Weissmann, D.A.

“…The potential of agricultural soils to sequester soil organic carbon (SOC) is affected by changes in the capacity of the mineral matrix to hold and protect SOC…”
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Does the walkley-black method determine soil charcoal? by Skjemstad, J.O., Taylor, J.A.

“…The Walkley-Black Method is shown to recover charcoal carbon (C) from both charcoal samples made in the laboratory from a range of plant materials as well as…”
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Spectroscopic investigations of cultivation effects on organic matter of Vertisols by Skjemstad, J.O, Dalal, R.C, Barron, P.F

“…Solid state carbon‐13 nuclear magnetic resonance (13C NMR) spectroscopy with cross polarization and magic angle spinning (CP/MAS) was used to study the effect…”
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Genesis of humus B horizons in hydromorphic humus podzols by Farmer, V. C, Skjemstad, J. O, Thompson, C. H

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Techniques for the differentiation of carbon types present in lignite-rich mine soils by RUMPEL, C, SKJEMSTAD, J. O, KNICKER, H, KÖGEL-KNABNER, I, HÜTTL, R. F

“…The objective of this study was to assess high energy UV photo-oxidation, super(13)C CP/MAS NMR spectroscopy and super(14)C activity measurements for their…”
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Charcoal Carbon in U.S. Agricultural Soils by Skjemstad, Jan O., Reicosky, Donald C., Wilts, Alan R., McGowan, Janine A.

“…High levels of charcoal C resulting from repeated historical burning of grasslands, open woodlands, and agricultural crop residues have been reported in soils…”
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