Search Results - "FLESSA, H"

Aggregate-occluded black carbon in soil by Brodowski, S., John, B., Flessa, H., Amelung, W.

“…Summary The great stability of black carbon (BC) in soils may not be solely attributable to its refractory structure but also to poor accessibility when…”
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Stabilization of organic matter in temperate soils: mechanisms and their relevance under different soil conditions - a review by Lützow, M. v., Kögel-Knabner, I., Ekschmitt, K., Matzner, E., Guggenberger, G., Marschner, B., Flessa, H.

“…Summary Mechanisms for C stabilization in soils have received much interest recently due to their relevance in the global C cycle. Here we review the…”
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Isotopologue signatures of N2O produced by denitrification in soils by Well, R., Flessa, H.

“…We investigated oxygen and site‐specific nitrogen isotope effects of N2O produced in the NO3−‐to‐N2O step of denitrification. Arable sand and silt loam soils…”
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Isotopologue enrichment factors of N2O reduction in soils by Well, R., Flessa, H.

“…Isotopic signatures can be used to study sink and source processes of N2O, but the success of this approach is limited by insufficient knowledge on the isotope…”
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Emission of N2O, N2 and CO2 from soil fertilized with nitrate: effect of compaction, soil moisture and rewetting by Ruser, R, Flessa, H, Russow, R, Schmidt, G, Buegger, F, Munch, J.C

“…Soil compaction and soil moisture are important factors influencing denitrification and N2O emission from fertilized soils. We analyzed the combined effects of…”
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Application of hydrochar and pyrochar to manure is not effective for mitigation of ammonia emissions from cattle slurry and poultry manure by Gronwald, M., Helfrich, M., Don, A., Fuß, R., Well, R., Flessa, H.

“…Nitrogen (N) loss as ammonia (NH 3 ) from agricultural systems is one of the major sources of atmospheric pollutants and is responsible for more than 50% of…”
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Comparison of chemical fractionation methods for isolating stable soil organic carbon pools by Helfrich, M., Flessa, H., Mikutta, R., Dreves, A., Ludwig, B.

“…Summary Stable soil organic matter (SOM) is important for long‐term sequestration of soil organic carbon (SOC), but the usefulness of different fractionation…”
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Controls of temporal and spatial variability of methane uptake in soils of a temperate deciduous forest with different abundance of European beech ( Fagus sylvatica L.) by Guckland, A., Flessa, H., Prenzel, J.

“…Aerated forest soils are a significant sink for atmospheric methane (CH 4). Soil properties, local climate and tree species can affect the soil CH 4 sink. A…”
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Modelling of crop yields and N₂O emissions from silty arable soils with differing tillage in two long-term experiments by Ludwig, B, Bergstermann, A, Priesack, E, Flessa, H

“…The choice of tillage system affects crop growth and soil nitrogen dynamics. Models help us to better understand these systems and the interaction of the…”
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Soil organic carbon in density fractions of tropical soils under forest - pasture - secondary forest land use changes by Paul, S, Veldkamp, E, FLESSA, H

“…Our knowledge of effects of land use changes and soil types on the storage and stability of different soil organic carbon (SOC) fractions in the tropics is…”
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Organic matter composition and potential trace gas production of permafrost soils in the forest tundra in northern Siberia by Rodionow, A., Flessa, H., Kazansky, O., Guggenberger, G.

“…The amount, quality and bioavailability of organic matter stored in permafrost soils are important factors determining the response of high-latitude soils to…”
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Predictive modelling of C dynamics in the long-term fertilization experiment at Bad Lauchstädt with the Rothamsted Carbon Model by Ludwig, B, Schulz, E, Rethemeyer, J, Merbach, I, Flessa, H

“…Models are important for predicting how soil organic carbon alters with changing environment and management. We tested three different ways of parameterizing…”
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Kinetics of N2O production and reduction in a nitrate-contaminated aquifer inferred from laboratory incubation experiments by Weymann, D, Geistlinger, H, Well, R, von der Heide, C, Flessa, H

“…Knowledge of the kinetics of N2 O production and reduction in groundwater is essential for the assessment of potential indirect emissions of the greenhouse…”
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Laboratory Estimates of Trace Gas Emissions following Surface Application and Injection of Cattle Slurry by Flessa, H., Beese, F.

“…Applying cattle slurry to soil may induce emissions of the greenhouse gases N2O and CH4. Our objective was to determine the effects of different application…”
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Groundwater N2O emission factors of nitrate-contaminated aquifers as derived from denitrification progress and N2O accumulation by C. Konrad, K. Meyer, M. Deurer, C. von der Heide, H. Flessa, R. Well, D. Weymann, W. Walther

“…We investigated the dynamics of denitrification and nitrous oxide (N2O) accumulation in 4 nitrate (NO−3) contaminated denitrifying sand and gravel aquifers of…”
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Organic carbon and total nitrogen variability in permafrost-affected soils in a forest tundra ecotone by Rodionov, A, Flessa, H, Grabe, M, Kazansky, O.A, Shibistova, O, Guggenberger, G

“…Soils of the high latitudes are expected to respond sensitively to climate change, but still little is known about carbon and nitrogen variability in them. We…”
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CO2 and N2O emissions from gleyic soils in the Russian tundra and a German forest during freeze-thaw periods--a microcosm study by Ludwig, B, Teepe, R, Lopes de Gerenyu, V, Flessa, H

“…Knowledge is scarce on mineralization of soil organic carbon (SOC) in and N2O emissions from tundra soils in periods of alternate freezing and thawing. Our…”
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Integrated evaluation of greenhouse gas emissions (CO 2, CH 4, N 2O) from two farming systems in southern Germany by Flessa, H, Ruser, R, Dörsch, P, Kamp, T, Jimenez, M.A, Munch, J.C, Beese, F

“…Agricultural practices contribute to emissions of the greenhouse gases CO 2, CH 4 and N 2O. The aim of this study was to determine and discuss the aggregate…”
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Automated Gas Chromatographic System for Rapid Analysis of the Atmospheric Trace Gases Methane, Carbon Dioxide, and Nitrous Oxide by Loftfield, N., Flessa, H., Augustin, J., Beese, F.

“…To study the fluxes of the radiative active trace gases CH4, CO2, and N2O, a gas sampling and analytical device was developed. It is a useful tool for accurate…”
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Measurement of isotopomer signatures of N2O in groundwater by Well, R., Flessa, H., Jaradat, F., Toyoda, S., Yoshida, N.

“…N2O flux from aquifers caused by leaching of agricultural N is a poorly known component of the global anthropogenic source of this greenhouse gas. We measured…”
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