Loss-on-ignition and the carbon contents of Australian soils

Spain, AV; Probert, M. E.; Isbell, R. F.; John, RD

doi:10.1071/sr9820147

Cited by 26 publications

(15 citation statements)

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“…As for the model 9, which does not take into account sampling depth, the value of the intercept was not significantly different from zero (P 00.067) so the regression was forced through the origin. The non-significant intercept agreed with certain published results (Spain et al 1982;Lowther et al 1990), and disagreed with others (Grewal et al 1991;Wang et al 1996;Konen et al 2002). It indicates that (i) the removal of structural water (hygroscopic and interlattice water) (De Leenher et al 1957;Goldin 1987;Howard and Howard 1990), (ii) CO 2 release from carbonates (De Leenheer et al 1957;Goldin 1987;Howard and Howard 1990), (iii) the loss of H 2 O from hydroxyl groups in sesquioxides (Goldin 1987) and (iv) destruction of elemental C such as charcoal (Ball 1964) were not important artefacts in these acidic loamy to sandy loam soils.…”

Section: Resultssupporting

confidence: 92%

Organic carbon, organic matter and bulk density relationships in boreal forest soils

Périé¹,

Ouimet²

2008

Can. J. Soil. Sci.

237

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Pe´rie´, C. and Ouimet, R. 2008. Organic carbon, organic matter and bulk density relationships in boreal forest soils. Can. J. Soil Sci. 88: 315Á325. Relationships between soil organic carbon (SOC), organic matter (SOM), and bulk density (BD) were established in acidic loamy to sandy loam fine fractions of forest soils in Quebec (Canada). The interest of such relationships rests with the possibility of using simple and rapid techniques to estimate SOC and BD. It is also a crucial step in establishing the correspondence among several data bases when SOC data are obtained using different measurement techniques. In this study, SOC was measured by dry combustion (SOC DC ) and wet digestion (SOC WD ) methods, and organic matter by loss-on-ignition (LOI). Our results suggest that, in these soils: (1) LOI can be used for estimating SOC (r 2 00.95, RMSEP 016%) and SOC DC /SOM significantly decreased with increasing depth from 0.49 to 0.27; (2) SOC DC and SOC WD were highly correlated. Even if SOC WD provided near complete recovery of SOC DC , dry combustion remains the preferred method for SOC analysis since SOC WD recovery decreased with increasing depth from 100 to 83%. (3) BD was also strongly related to SOM (r 2 00.81). We recommend using the organic density approach to estimate BD from SOM because it allows BD to be predicted without significant bias and with a degree of accuracy of 14%.Key words: Forest soils, soil organic carbon, soil organic matter, soil bulk density Pe´rie´, C. et Ouimet, R. 2008. Liens entre le carbone organique, la matie`re organique et la masse volumique apparente dans le sol des foreˆts bore´ales. Can. J. Soil Sci. 88: 315Á325. Les auteurs ont pre´cise´les liens entre le carbone organique (COS), la matie`re organique (MOS) et la masse volumique apparente (MVA) du sol dans les fractions fines de loam et de loam sablonneux des sols forestiers acides du Que´bec. De tels liens pre´sentent un certain inte´reˆt, car on pourrait y recourir comme technique simple et rapide pour e´valuer la concentration de COS et la MVA. Il s'agit aussi d'une e´tape cruciale quand on souhaite e´tablir une correspondance entre des bases de donne´es ou`la concentration de COS e´mane de diverses techniques. Dans le cadre de la pre´sente e´tude, la quantite´de COS a e´te´de´termine´e par combustion se`che (COS CS ) et digestion par voie humide (COS DH ) tandis qu'on a mesure´la concentration de matie`re organique au moyen des pertes par calcination (PPC). Les auteurs ont obtenu les re´sultats que voici pour les sols concerne´s. (1) La me´thode PPC permet d'estimer le COS (r 2 0 0,95, RMSEP 0 16 %) et le ratio COS CS /MOS diminue de manie`re significative, de 0,49 a`0,27, avec la profondeur. (2) Il existe une importante corre´lation entre le COS CD et le COS DH . Bien que la technique COS DH permette de re´cupe´rer la quasi totalite´du COS CS , la combustion se`che demeure la me´thode privile´gie´e pour analyser le COS, la quantite´de carbone re´cupe´re´e par COS DH passant de 100 a`83 % a`mesure qu'augmente la profond...

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Section: Resultssupporting

confidence: 92%

Organic carbon, organic matter and bulk density relationships in boreal forest soils

Périé¹,

Ouimet²

2008

Can. J. Soil. Sci.

237

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“…Grewal et al (1991) and Abella and Zimmer (2007) also found a significant increase in mass loss with increasing LOI temperature. In some cases, including clay content in the regression equation improved R 2 from 6% to 19% (Spain et al, 1982;Grewel et al, 1991;Abella and Zimmer, 2007). Donkin (1991) found that clay becomes significant above 400°C but that high OM increased the variability of LOI at all temperatures.…”

Section: Sources Of Variationmentioning

confidence: 96%

A critical review of the conventional SOC to SOM conversion factor

2010

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“…Many reports have used regressions or ratios to make the conversion between C and OM contents obtained with these different methods Jenkinson, 1960a, 1960b;Davies, 1974;Huntington et al, 1989;Lowther et al, 1990;Wang et al, 1996). However, these correlations may be soil-type specific (Spain et al, 1982;Wangetal., 1996). The interest of such comparisons relies on the possibility of using more simple and rapid techniques for estimating total C. It is also a crucial step for harmonizing databases when soil organic C data come from different measurement techniques.…”

Section: Introductionmentioning

confidence: 97%

Comparison between analytical methods for organic carbon and organic matter determination in sandy Spodosols of France

Jolivet

Arrouays

Bernoux

1998

Communications in Soil Science and Plant Analysis

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On samples from sandy soils of French Gascony (spodosols), we compared results from analytical determination of organic carbon (C) by wet and dry combustion and of organic matter (OM) by loss-on-ignition at 550°C. Results demonstrated that wet digestion systematically underestimated C content. Loss-on-ignition an wet digestion measurements were well correlated to C content obtained by dry combustion.

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Loss-on-ignition and the carbon contents of Australian soils

Cited by 26 publications

References 0 publications

Organic carbon, organic matter and bulk density relationships in boreal forest soils

Organic carbon, organic matter and bulk density relationships in boreal forest soils

A critical review of the conventional SOC to SOM conversion factor

Comparison between analytical methods for organic carbon and organic matter determination in sandy Spodosols of France

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