Preliminary estimates of contemporary soil organic carbon stocks in Denmark using multiple datasets and four scaling-up methods

Krogh, Lars Brian; Noergaard, Anette; Hermansen, Martin; Greve, Mogens Humlekrog; Balstroem, T.; Breuning‐Madsen, Henrik

doi:10.1016/s0167-8809(03)00016-1

Cited by 100 publications

(66 citation statements)

References 24 publications

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“…As the SOC stock to 0-50 cm depth is roughly 70-85% of the total stock down to 100 cm depth in forest soils (Grigal and Ohmann 1992, Jobbágy and Jackson 2000, Krogh et al 2003, a value of 14.6 kg C m -2 down to 100 cm depth corresponds to a total SOC stock (O-horizon plus 0-50 cm mineral soil) of about 12 kg C m -2 in. This value is about 14% higher than our value (10.5 kg C m -2 ) obtained at latitude 56°N from the linear relationship between latitude and total SOC stock of dry and fresh sites (Table 2).…”

Section: Discussionmentioning

confidence: 99%

Organic carbon stocks in Swedish Podzol soils in relation to soil hydrology and other site characteristics

Olsson¹,

Erlandsson²,

Lundin³

et al. 2009

Silva Fenn.

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Site characteristics influence soil organic carbon (SOC) stocks. In Podzols under Swedish forest land, SOC stocks were related to latitude, altitude, soil hydrological class categorized by mean groundwater level, mean annual precipitation, temperature sum during the growing season, total annual nitrogen (N) deposition and site capacity. SOC stocks were determined for the O-horizon and for total soil (O-horizon + mineral soil to a depth of 50 cm). Data from the Swedish National Forest Soil Inventory 1993-2001 were used (1477 field plots). The O-horizon was sampled with a core sampler and carbon (C) stocks were determined. For the mineral soil layers the SOC stock was calculated based on the SOC concentrations, bulk density and content of rock fragments. The results showed that the overall mean SOC stock was 2.8 and 8.2 kg C m -2 for O-horizon and total soil, respectively. Soil hydrological class strongly affected SOC stocks, which increased from on average 6.7 kg C m -2 at dry sites to 9.7 kg C m -2 at slightly moist sites. Corresponding values for the O-horizon were 2.0 to 4.4 kg C m -2 . The correlation coefficients for the linear relationship between SOC stock and site characteristics were highest for N deposition, which explained up to 25% of variation, and latitude, which explained up to 20% of variation. Altitude had the lowest degree of explanation.

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Section: Discussionmentioning

confidence: 99%

Organic carbon stocks in Swedish Podzol soils in relation to soil hydrology and other site characteristics

Olsson¹,

Erlandsson²,

Lundin³

et al. 2009

Silva Fenn.

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“…Similarly, the mineral soil C stocks are comparable with reported C stocks from previous studies of similar environments and soil orders. Krogh et al (2003) reported average mineral soil C stocks (0Á100 cm depth) of 13.6 and 14.4 kg C m (2 for Danish soils in sandy parent material and unforested natural vegetation, respectively. Grigal and Ohmann (1992) reported mean mineral soil C stocks (0Á100 cm) in the US Great Lakes region of 10.6 kg C m Á2 , while Franzmeier et al (1985) found an average mineral soil C stock (0Á100 cm) in the north-central USA of 11.7 kg C m (2 .…”

Section: Soil Organic Carbon Stocks and Sequestration Ratesmentioning

confidence: 99%

Soil development rates from an optically stimulated luminescence-dated beach ridge sequence in Northern Jutland, Denmark

Nielsen¹,

Elberling²,

Pejrup³

2010

Can. J. Soil. Sci.

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M. 2010. Soil development rates from an optically stimulated luminescence-dated beach ridge sequence in Northern Jutland, Denmark. Can. J. Soil Sci. 90: 295Á307. Rates of podzolic soil development in sandy, temperate soils were quantified based on 14 soil pedons with five substrata from a beach ridge chronosequence near Jerup, Northern Denmark (578N). Soil pH, organic carbon (C) as well as extractable iron (Fe) and aluminium (Al) were measured. The age of each pedon and soil stratum was measured by optically stimulated luminescence (OSL) dating and used to estimate soil development rates. Soils were divided into five groups from Typic Haplorthods and Entic Alorthods with a mean OSL age of 29659294 yr to Typic Quartzipsamments with a mean OSL age of 22911 yr. Acidification rates during the first 200 yr were Â1.9 pH units per 100 yr in the A horizons and C-sequestration rates wereÂ25 g C m (2 yr(1 (excluding litter accumulation). After Â1500 yr, the mineral soil C stocks stabilised around 13.092.0 kg C m (2 . Translocation rates of Al into B horizons were Â0.3 kg Al m (2 per 1000 yr, while translocation rates for Fe were scattered. Our study illustrates the potential of OSL dating in chronosequence studies to quantify soil development rates.Key words: Soil development rates, chronosequence, OSL-dating, C-sequestration rates and translocation rates Nielsen, A. H., Elberling, B. et Pejrup, M. 2010. Taux de de´veloppement du sol dans une se´quence de ride de plage date´e par luminescence stimule´e optiquement dans le nord du Jutland, au Danemark. Can. J. Soil Sci. 90: 295Á307. Les auteurs ont quantifie´le taux de de´veloppement des podzols dans un sol tempe´re´sablonneux a`partir de 14 pe´dons incluant 5 sousstrates issues d'une chronose´quence pre`s de Jerup, dans le nord du Danemark (578N). Ils ont mesure´le pH du sol, la concentration de carbone organique (C) ainsi que la proportion de fer (Fe) et d'aluminium (Al) extractible. L'aˆge de chaque pe´don et strate a e´te´e´tabli par luminescence stimule´e optiquement (LSO) ce qui a permis d'estimer le taux de de´veloppement du sol. Les sols ont e´te´re´partis en cinq groupes, de l'haplorthod typique a`l'alorthod entique, dont la LSO moyenne est de 2 9659294 ans, aux quartzipsamments typiques, dont la LSO moyenne se chiffre a`22911 ans. Le taux d'acidification au cours des 200 premie`res anne´es e´tait deÂ1,9 unite´pH par sie`cle pour les horizons A, tandis que le taux de se´questration du C s'e´tablissait a`Â25 g par m 2 et par anne´e (sans la couverture de´tritique). Apre`s Â1500 ans, la re´serve de C du sol se stabilise autour de 13,092,0 kg par m 2 . La translocation de l'Al dans les horizons B se situe a`Â0,3 kg par m 2 par 1 000 ans alors que celle du Fe varie. L'e´tude re´ve`le le potentiel de la me´thode de datation par LSO dans l'e´tude des chronose´quences pour mesurer le taux de de´veloppement du sol.

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“…However, the match between country level estimates of SOC stocks using this method and estimates based on national databases depends on the country and may sometimes be poor. For instance, SOC stocks for the first 1 m in Denmark was estimated to vary from 0.563 to 0.598 PgC, among which 60% is found in the 0-28 cm layer (Krogh et al, 2003). Thus, the amount can be rescaled to 0.338 to 0.359 PgC, for the first 28 cm layer, compared to the Joint Research Center (JRC)'s estimate of 0.6 PgC for only the first 30 cm (Hiederer, 2010).…”

Section: Introductionmentioning

confidence: 99%

Spatial distribution of soil organic carbon stocks in France

Martín¹,

Wattenbach²,

Smith

et al. 2011

Biogeosciences

256

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Abstract. Soil organic carbon plays a major role in the global carbon budget, and can act as a source or a sink of atmospheric carbon, thereby possibly influencing the course of climate change. Changes in soil organic carbon (SOC) stocks are now taken into account in international negotiations regarding climate change. Consequently, developing sampling schemes and models for estimating the spatial distribution of SOC stocks is a priority. The French soil monitoring network has been established on a 16 km × 16 km grid and the first sampling campaign has recently been completed, providing around 2200 measurements of stocks of soil organic carbon, obtained through an in situ composite sampling, uniformly distributed over the French territory.We calibrated a boosted regression tree model on the observed stocks, modelling SOC stocks as a function of other variables such as climatic parameters, vegetation net primary productivity, soil properties and land use. The calibrated model was evaluated through cross-validation and eventually used for estimating SOC stocks for mainland France. Two other models were calibrated on forest and agricultural soils separately, in order to assess more precisely the influence of pedo-climatic variables on SOC for such soils.The boosted regression tree model showed good predictive ability, and enabled quantification of relationships between SOC stocks and pedo-climatic variables (plus their interactions) over the French territory. These relationships strongly depended on the land use, and more specifically, differed between forest soils and cultivated soil. The total estimate of SOC stocks in France was 3.260 ± 0.872 PgC for the first 30 cm. It was compared to another estimate, based on the Correspondence to: M. P. Martin (manuel.martin@orleans.inra.fr) previously published European soil organic carbon and bulk density maps, of 5.303 PgC. We demonstrate that the present estimate might better represent the actual SOC stock distributions of France, and consequently that the previously published approach at the European level greatly overestimates SOC stocks.

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Preliminary estimates of contemporary soil organic carbon stocks in Denmark using multiple datasets and four scaling-up methods

Cited by 100 publications

References 24 publications

Organic carbon stocks in Swedish Podzol soils in relation to soil hydrology and other site characteristics

Organic carbon stocks in Swedish Podzol soils in relation to soil hydrology and other site characteristics

Soil development rates from an optically stimulated luminescence-dated beach ridge sequence in Northern Jutland, Denmark

Spatial distribution of soil organic carbon stocks in France

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