Spatial and temporal variability of soil gas diffusivity, its scaling and relevance for soil respiration under different tillage

Schwen, Andreas; Jeitler, Eva; Böttcher, Jürgen

doi:10.1016/j.geoderma.2015.04.020

Cited by 24 publications

(21 citation statements)

References 60 publications

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“…It is in line with findings of other research that soil cultivation increases CO 2 emission (Schwen, Jetler, & Böttcher, 2015).…”

Section: Resultssupporting

confidence: 93%

“…Data shows significant differences between growing years in SRR (data not shown), where SRR in the first year was significantly lower than in the second and the third growing year. It is in line with findings of other research that soil cultivation increases CO2 emission (Schwen, Jetler, & Böttcher, 2015 -Bean VF_01 compared to both controls, 2 -Bean VF_02 compared to both controls, 3 -Pea `Capella` compared to both controls, 4 -Pea `Ambrosia` compared to both controls, 5 -Clover compared to both controls.…”

Section: Resultssupporting

confidence: 92%

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Influence of legumes on soil fertility in strawberry – legume intercropping

Dane¹,

Laugale²,

Lepse³

et al. 2017

Research for Rural Development

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Legumes are becoming more popular in food and feed consumption. They are promoted by EU policy related to healthy lifestyle and environmental policy. Legumes can be grown in crop rotation as monocrop or in different kind of intercropping systems. It is a well known fact that legumes play an important role in fixation of the atmospheric N, whereas their influence on other biological and chemical aspects of the soil ecosystem is only explored partially. The experimental trial was established at the Pūre Horticultural Research Centre with the aim of studying the influence of legumes on the soil properties in the intercrop with strawberries (Fragaria × ananassa Duch.). Different genotypes were included in the trial as intercrops: two local broad bean (Vicia faba var. major L.) genotypes, two pea (Pissum sativum L.) cultivars and clover (Trifolium hybridum L.). Two control treatments were included in the trial: with and without nitrogen fertilizer usage. Strawberries were planted in May of 2014 and maintained in the field for three years. Results showed that there were significant differences between treatments in soil respiration rate (SRR) and SRR dynamic throughout the experiment time. Dehydrogenase activity had similar results, though no significant differences between treatments were observed in the third year. No significant difference between treatments was found in the soil organic matter. Obtained data shows that legumes have a significant influence on the soil biological properties but not on biochemical properties. Further research needs to be carried out to determine legume influence on soil environment in more detail.

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“…It is in line with findings of other research that soil cultivation increases CO 2 emission (Schwen, Jetler, & Böttcher, 2015).…”

Section: Resultssupporting

confidence: 93%

Section: Resultssupporting

confidence: 92%

Influence of legumes on soil fertility in strawberry – legume intercropping

Dane¹,

Laugale²,

Lepse³

et al. 2017

Research for Rural Development

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“…Nitrification, denitrification and respiration are major processes affecting soil greenhouse gases (i.e., CO 2 and N 2 O) emissions and soil nitrogen availability 1 2 3 4 5 6 . It has been proven that CO 2 emission from microbial respiration in soils was in excess of any other terrestrial-atmospheric carbon transactions, which is thus considered as the primary natural source for CO 2 emission 7 8 . The increase of soil CO 2 emission had the potential of promoting atmospheric CO 2 levels, which in turn would aggravate global warming 9 10 11 12 13 .…”

mentioning

confidence: 99%

Microbial nitrification, denitrification and respiration in the leached cinnamon soil of the upper basin of Miyun Reservoir

Cai

Zhang

et al. 2017

Sci Rep

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Leached cinnamon soil is the main agricultural soil distributed in the North China Plain. In this research, leached cinnamon soil samples were collected in the upper basin of Miyun Reservoir (northeast of Beijing, China). The BaPS method (Barometric Process Separation) was applied to measure nitrification, denitrification and respiration rates. The rates of nitrification, denitrification and respiration were 0–120.35 μg N/kg SDW h, 0–246.86 μg N/kg SDW h and 0.17–225.85 μg C/kg SDW h (Soil Dry Weight, SDW), respectively. The emission rates of CO2 and NxOy through nitrification, denitrification and respiration were 1.00–547.80 and 6.00–4850.65 μmol/h, respectively. The analysis of relationships between nitrification, denitrification and respiration rates indicated that these three microbial processes were interacted, which posed impacts on soil nitrogen availability. As indicated by the results, C:N ratio coupled with content could be taken as the indicators of content, which is usually the predominant form of N available to plants growing in soil. Results showed that content was the highest (i.e., >62.4 mg/kg) when C:N ratio was 5.30–8.40, meanwhile content was 3.71–4.39 mg/kg. Nevertheless, content was the lowest (i.e., <6.40 mg/kg) when C:N ratio was 9.2–12.10, meanwhile content was 3.41–4.35 mg/kg.

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“…In the field study, the conventional tillage treatments had the highest respiration rates, aligning with several previous studies (Hendrix et al ., ; Reicosky, ; Schwen et al ., ). The effect became more notable as the depth of incorporation increased, which could be a function of alterations in substrate availability and increases in oxygen diffusion rates that occurred throughout the profile, rather than greater decomposition of the cover crop residue.…”

Section: Discussionmentioning

confidence: 97%

“…As an example, Schwen et al . () showed that conventional tillage can enhance the effective gas diffusion rates of soil compared to no‐till. Comparing no‐till treatments, artificial macropores enhanced respiration rates, although the effect was only significant ( P < 0.1) for the litter incorporated to the 12 cm depth, and for only one of eight measurements.…”

Section: Discussionmentioning

confidence: 99%

Of macropores and tillage: influence of biomass incorporation on cover crop decomposition and soil respiration

McCourty

Gyawali

Stewart

2018

Soil Use and Management

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Carbon sequestration in agricultural soils may help to reduce global greenhouse gas concentrations, but building up soil carbon levels requires accumulating organic matter faster than it is lost via heterotrophic respiration. Using field and laboratory studies, this study sought to elucidate how tillage, the below-ground incorporation of cover crop residue, and soil macroporosity affect soil respiration and residue decomposition rates. In the field, residue from a cover crop mixture of barley (Hordeum vulgare) and crimson clover (Trifolium incarnatum) was placed into litter bags that were left on the surface versus incorporated into the soil at three depths (4, 8 or 12 cm), while the laboratory study compared surfaceplaced versus incorporated litter (8 cm depth). To assess tillage effects on cover crop decomposition, the field study simulated no-till and conventional tillage treatments, while the laboratory and field studies both included treatments in which artificial soil macropores were created. The field study showed that conventional tillage and the presence of macropores enhanced soil respiration, while in the laboratory study, incorporating cover crop residue resulted in higher soil respiration and faster litter decomposition rates. Additionally, the laboratory measurements showed that macropores increased soil respiration in wet conditions, likely by enhancing oxygen diffusion. Thus, organic matter incorporation and macropores may represent important factors that affect soil respiration and carbon dynamics.

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Spatial and temporal variability of soil gas diffusivity, its scaling and relevance for soil respiration under different tillage

Cited by 24 publications

References 60 publications

Influence of legumes on soil fertility in strawberry – legume intercropping

Influence of legumes on soil fertility in strawberry – legume intercropping

Microbial nitrification, denitrification and respiration in the leached cinnamon soil of the upper basin of Miyun Reservoir

Of macropores and tillage: influence of biomass incorporation on cover crop decomposition and soil respiration

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