Quantification of functional soil organic carbon pools for major soil units and land uses in southeast Germany (Bavaria)

Wiesmeier, Martin; Schád, Péter; Lützow, Margit von; Poeplau, Christopher; Spörlein, Peter; Geuß, Uwe; Hangen, Edzard; Reischl, Arthur; Schilling, Bernd; Kögel‐Knabner, Ingrid

doi:10.1016/j.agee.2013.12.028

Cited by 71 publications

(33 citation statements)

References 68 publications

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“…Tillage may promote the formation of organo-mineral associations by an ongoing creation of available mineral surfaces down to the plough pan that probably increases the contact with crop residues (Balesdent et al, 2000). This was indicated by a quantification of functional SOC pools for soils of Bavaria, which revealed a higher proportion of OC associated with silt and clay particles in cropland soils compared to grassland and forest (Wiesmeier et al, 2014). Further indications were found in the study of Wingeyer et al (2012), which reported enhanced stabilization of maize residues induced by fall conservation deep tillage due to an increased soil-crop residue contact surface.…”

Section: Discussionmentioning

confidence: 96%

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Land use effects on organic carbon storage in soils of Bavaria: The importance of soil types

Wiesmeier

Lützow

Spörlein

et al. 2015

Soil and Tillage Research

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Section: Discussionmentioning

confidence: 96%

“…Cropland accounts for 34% of the total land area of Bavaria, grassland for 16%, forest for 35% and other uses for 15%. Further information on the study area and its soils can be found in Würfl et al (1984) and Wiesmeier et al (2013aWiesmeier et al ( , 2014.…”

Section: Study Areamentioning

confidence: 98%

Land use effects on organic carbon storage in soils of Bavaria: The importance of soil types

Wiesmeier

Lützow

Spörlein

et al. 2015

Soil and Tillage Research

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“…Compared with other land use types, such as grassland or forest, the proportion of SOC stored in this fraction is very high in arable soil (Steffens et al 2011;, while macro-aggregates do not play a significant role. Apart from the well-established negative effect of tillage on soil aggregation (Six et al 1999), Wiesmeier et al (2014) suggested that tillage might promote the formation of such organo-mineral complexes due to mixing of fresh organic material with unsaturated mineral surfaces. In an incubation experiment, Stemmer et al (1999) showed that mixing residues and mineral soil resulted in higher SOC contents in the silt and clay fraction than applying residues on the surface of the mineral soil.…”

Section: Long-term Effect Of Straw Addition On Soil Carbonmentioning

confidence: 99%

Qualitative and quantitative response of soil organic carbon to 40 years of crop residue incorporation under contrasting nitrogen fertilisation regimes

et al. 2017

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Abstract.Crop residue incorporation (RI) is recommended to increase soil organic carbon (SOC) stocks. However, the positive effect on SOC is often reported to be relatively low and alternative use of crop residues, e.g. as a bioenergy source, may be more climate smart. In this context, it is important to understand: (i) the response of SOC stocks to long-term crop residue incorporation; and (ii) the qualitative SOC change, in order to judge the sustainability of this measure. We investigated the effect of 40 years of RI combined with five different nitrogen (N) fertilisation levels on SOC stocks and five SOC fractions differing in turnover times on a clay loam soil in Padua, Italy. The average increase in SOC stock in the 0-30 cm soil layer was 3.1 Mg ha -1 or 6.8%, with no difference between N fertilisation rates. Retention coefficients of residues did not exceed 4% and decreased significantly with increasing N rate (R 2 = 0.49). The effect of RI was higher after 20 years (4.6 Mg ha -1 ) than after 40 years, indicating that a new equilibrium has been reached and no further gains in SOC can be expected. Most (92%) of the total SOC was stored in the silt and clay fraction and 93% of the accumulated carbon was also found in this fraction, showing the importance of fine mineral particles for SOC storage, stabilisation and sequestration in arable soils. No change was detected in more labile fractions, indicating complete turnover of the annual residue-derived C in these fractions under a warm humid climate and in a highly base-saturated soil. The applied fractionation was thus useful to elucidate drivers and mechanisms of SOC formation and stabilisation. We conclude that residue incorporation is not a significant management practice affecting soil C storage in warm temperate climatic regions.

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“…It has been reported that soils with high SOC concentrations such as the soil under investigation may respond to disturbance with particularly fast C loss [22]. In the investigated forest ecosystem, soil respiration increased in the first year after thinning on average by ca.…”

Section: Forest Management Affects Soil C Turnover and Soil C Stocks mentioning

confidence: 94%

Thinning of Beech Forests Stocking on Shallow Calcareous Soil Maintains Soil C and N Stocks in the Long Run

Tejedor

Saiz

Rennenberg

et al. 2017

Forests

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Sustainable forest management should avoid disturbance and volatilization of the soil carbon (C) and nitrogen (N) stocks both under present and projected future climate. Earlier studies have shown that thinning of European beech forests induces a strong initial perturbation of the soil C and N cycles in shallow Rendzic Leptosol, which consists of lower soil N retention and strongly enhanced gaseous losses observed over several years. Persistence of these effects could decrease soil organic matter (SOM) levels and associated soil functions such as erosion protection, nutrient retention, and fertility. Therefore, we resampled untreated control and thinned stands a decade after thinning at sites representing both typical present day and projected future climatic conditions for European beech forests. We determined soil organic C and total N stocks, as well as δ 13 C and δ 15 N as integrators of changes in soil C and N cycles. Thinning did not alter these parameters at any of the sampled sites, indicating that initial effects on soil C and N cycles constitute short-term perturbations. Consequently, thinning may be considered a sustainable beech forest management strategy with regard to the maintenance of soil organic C and total N stocks both under present and future climate.

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Quantification of functional soil organic carbon pools for major soil units and land uses in southeast Germany (Bavaria)

Cited by 71 publications

References 68 publications

Land use effects on organic carbon storage in soils of Bavaria: The importance of soil types

Land use effects on organic carbon storage in soils of Bavaria: The importance of soil types

Qualitative and quantitative response of soil organic carbon to 40 years of crop residue incorporation under contrasting nitrogen fertilisation regimes

Thinning of Beech Forests Stocking on Shallow Calcareous Soil Maintains Soil C and N Stocks in the Long Run

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