J
Jan O. Skjemstad
Researcher at Commonwealth Scientific and Industrial Research Organisation
Publications - 67
Citations - 15219
Jan O. Skjemstad is an academic researcher from Commonwealth Scientific and Industrial Research Organisation. The author has contributed to research in topics: Soil organic matter & Organic matter. The author has an hindex of 47, co-authored 67 publications receiving 14059 citations.
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Journal ArticleDOI
Black Carbon Increases Cation Exchange Capacity in Soils
Biqing Liang,Johannes Lehmann,Dawit Solomon,James Kinyangi,Julie M. Grossman,B. O'Neill,Jan O. Skjemstad,Janice E. Thies,Flávio J. Luizão,James B. Petersen,Eduardo Góes Neves +10 more
TL;DR: In this article, the authors investigated the source of the higher surface charge of BC compared with non-BC by mapping crosssectional areas of BC particles with diameters of 10 to 50 mm for C forms.
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Visible, near infrared, mid infrared or combined diffuse reflectance spectroscopy for simultaneous assessment of various soil properties
TL;DR: In this article, partial least squares regression (PLSR) was used to construct calibration models which were independently validated for the prediction of various soil properties from the soil spectra, including soil pHCa,p H w, lime requirement (LR), organic carbon (OC), clay, silt, sand, cation exchange capacity, exchangeable calcium (Ca), exchangeable aluminium (Al), nitrate-nitrogen (NO3-N), available phosphorus (PCol), exchangeability potassium (K) and electrical conductivity (EC).
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Role of the soil matrix and minerals in protecting natural organic materials against biological attack
Jeff Baldock,Jan O. Skjemstad +1 more
TL;DR: In this paper, the authors consider the stabilisation of organic materials in soils by the soil matrix is a function of the chemical nature of the soil mineral fraction and the presence of multivalent cations.
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Comparison of quantification methods to measure fire-derived (black/elemental) carbon in soils and sediments using reference materials from soil, water, sediment and the atmosphere
Karen Hammes,Michael W. I. Schmidt,Ronald J. Smernik,Lloyd A. Currie,William P. Ball,Thanh H. Nguyen,Thanh H. Nguyen,Patrick Louchouarn,Patrick Louchouarn,Stephane Houel,Örjan Gustafsson,Marie Elmquist,Gerard Cornelissen,Jan O. Skjemstad,Caroline A. Masiello,Jianzhong Song,Ping'an Peng,Siddhartha Mitra,Joshua C. Dunn,Patrick G. Hatcher,William C. Hockaday,Dwight M. Smith,Christoph Hartkopf-Fröder,Axel Böhmer,Burkhard Lüer,Barry J. Huebert,Wulf Amelung,Sonja Brodowski,Lin Huang,Wendy Zhang,Philip M. Gschwend,D. Xanat Flores-Cervantes,Claude Largeau,Jean-Noël Rouzaud,Cornelia Rumpel,Georg Guggenberger,Klaus Kaiser,Andrei Rodionov,Francisco Javier González-Vila,José S. Gonzalez-Perez,José María De la Rosa,David A. C. Manning,Elisa Lopez-Capel,Luyi Ding +43 more
TL;DR: In this paper, the authors conducted a comprehensive intercomparison of this type (multimethod, multilab, and multisample), focusing mainly on methods used for soil and sediment BC studies.
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Study of free and occluded particulate organic matter in soils by solid state 13C Cp/MAS NMR spectroscopy and scanning electron microscopy
TL;DR: In this article, a densimetric method for the separation of free and occluded particulate organic materials was developed and applied to five virgin soils, where the free organic matter was isolated by suspending the soil in sodium polytungstate solution (d = 1.6 Mg m-3) and decanting the light material.