Publications (67)59.92 Total impact
-
Article: Microclimate and forest management alter fungal-to-bacterial ratio and N2O-emission during rewetting in the forest floor and mineral soil of mountainous beech forests
[show abstract] [hide abstract]
ABSTRACT: The effects of site exposure (microclimate) and forest management (thinning) on fungal-to-bacterial (F:B) respiratory ratio and N2O emission from forest floor and Ah layer samples were studied at untreated and thinned beech forests. Microclimate effects were studied by selecting sites facing north-east (NE) or south-west (SW). The F:B respiratory ratio was estimated using substrate-induced respiration in combination with inhibitors either affecting fungi or bacteria. N2O production was evaluated after moistening samples initially pre-incubated at different moisture levels to 100% of the water holding capacity (WHC). F:B respiratory ratios were significantly affected by microclimate and thinning, with site exposure having the strongest effect on fungal-to-bacterial ratio and N2O production both for the forest floor and the Ah layer. Significantly more N2O was produced from soils pre-incubated under low (15% WHC) moisture conditions as compared to soils pre-incubated under air dry (5% WHC) or wet conditions (30–60% WHC). A positive correlation between N2O emission and F:B respiratory ratio for Ah layer samples and a negative correlation between bacterial substrate induced respiration (SIR) and N2O emission for both Ah layer and forest floor samples indicated that net N2O production was the result of predominantly fungal N2O production and predominantly bacterial N2O consumption. The latter hypothesis was further supported by increased N2O emission from samples treated with bacterial inhibitor.Biogeochemistry 04/2012; 97(1):55-70. · 3.07 Impact Factor -
Article: Soil N and C trace gas fluxes and microbial soil N turnover in a sessile oak (Quercus petraea (Matt.) Liebl.) forest in Hungary
[show abstract] [hide abstract]
ABSTRACT: During two intensive field campaigns in summer and autumn 2004 nitrogen (N2O, NO/NO2) and carbon (CO2, CH4) trace gas exchange between soil and the atmosphere was measured in a sessile oak (Quercus petraea (Matt.) Liebl.) forest in Hungary. The climate can be described as continental temperate. Fluxes were measured with a fully automatic measuring system allowing for high temporal resolution. Mean N2O emission rates were 1.5µgNm−2h−1 in summer and 3.4µgNm−2h−1 in autumn, respectively. Also mean NO emission rates were higher in autumn (8.4µgNm−2h−1) as compared to summer (6.0µgNm−2h−1). However, as NO2 deposition rates continuously exceeded NO emission rates (−9.7µgNm−2h−1 in summer and −18.3µgNm−2h−1 in autumn), the forest soil always acted as a net NO x sink. The mean value of CO2 fluxes showed only little seasonal differences between summer (81.1mgCm−2h−1) and autumn (74.2mgCm−2h−1) measurements, likewise CH4uptake (summer: −52.6µgCm−2h−1; autumn: −56.5µgCm−2h−1). In addition, the microbial soil processes net/gross N mineralization, net/gross nitrification and heterotrophic soil respiration as well as inorganic soil nitrogen concentrations and N2O/CH4 soil air concentrations in different soil depths were determined. The respiratory quotient (ΔCO2resp ΔO2 resp−1) for the uppermost mineral soil, which is needed for the calculation of gross nitrification via the Barometric Process Separation (BaPS) technique, was 0.8978±0.008. The mean value of gross nitrification rates showed only little seasonal differences between summer (0.99µgNkg−1 SDW d−1) and autumn measurements (0.89µgNkg−1SDW d−1). Gross rates of N mineralization were highest in the organic layer (20.1–137.9µgNkg−1SDW d−1) and significantly lower in the uppermost mineral layer (1.3–2.9µgNkg−1SDW d−1). Only for the organic layer seasonality in gross N mineralization rates could be demonstrated, with highest mean values in autumn, most likely caused by fresh litter decomposition. Gross mineralization rates of the organic layer were positively correlated with N2O emissions and negatively correlated with CH4 uptake, whereas soil CO2 emissions were positively correlated with heterotrophic respiration in the uppermost mineral soil layer. The most important abiotic factor influencing C and N trace gas fluxes was soil moisture, while the influence of soil temperature on trace gas exchange rates was high only in autumn.Plant and Soil 04/2012; 286(1):301-322. · 2.73 Impact Factor -
Article: Decadal variability of soil CO
[show abstract] [hide abstract]
ABSTRACT: Besides agricultural soils, temperate forest soils have been identified as significant sources of or sinks for important atmospheric trace gases (NBiogeosciences 01/2012; 9:1741-1763. · 3.86 Impact Factor -
Article: Decadal variability of soil CO2, NO, N2O, and CH4 fluxes at the Höglwald Forest, Germany
[show abstract] [hide abstract]
ABSTRACT: Besides agricultural soils, temperate forest soils have been identified as significant sources of or sinks for important atmospheric trace gases (NBiogeosciences 01/2012; 9:1741-1763. · 3.86 Impact Factor -
Article: Bioethanol production from sugarcane and emissions of greenhouse gases – known and unknowns
[show abstract] [hide abstract]
ABSTRACT: 1757-1707GCB Bioenergy. 01/2011; 3:277-292. -
Article: Simulating mycorrhiza contribution to forest C and N cycling - the MYCOFON model
[show abstract] [hide abstract]
ABSTRACT: Although mycorrhiza has been identified to be of major importance for plant nutrition and ecosystem stability, existing C-and N-simulation models on the ecosystem scale do not explicitly consider the feedbacks between ectomycorrhizal fungi and plants. We present a simple dynamic feedback model which allows estimating the main C-and N-flows between ectomycorrhizal fungi and tree roots in order to test the sensitivity of the system fungus-tree to environmental parameters and to assess the fungal contribution to plant N nutrition. Sensitivity tests carried out showed that the model responses to variations of model parameters, particularly with regard to N availability, are in agreement with published results from field and laboratory studies. However, there are still some processes and parame-ters which are not well constrained. Fungal N uptake rates and the ratio between mycelium, hartig net, and mantle biomass are parameters which significantly affect model results but for which published data are scarce or missing. Nevertheless, the model is already providing a platform to test our understanding of the importance of mycorrhiza for forest stand nutrition. Future coupling to a mechanistic ecosystem model will allow simulating the importance of mycorrhiza-tion for e.g. stand growth and C and N retention.Plant and Soil 01/2010; 327:493. · 2.73 Impact Factor -
Article: The complete nitrogen cycle of an N-saturated spruce forest ecosystem.
[show abstract] [hide abstract]
ABSTRACT: Long-term nitrogen deposition into forest ecosystems has turned many forests in Central Europe and North America from N-limited to N-saturated systems, with consequences for climate as well as air and groundwater quality. However, complete quantification of processes that convert the N deposited and contributed to ecosystem N cycling is scarce. In this study, we provide the first complete quantification of external and internal N fluxes in an old-growth spruce forest, the Höglwald, Bavaria, Germany, exposed to high chronic N deposition. In this forest, N cycling is dominated by high rates of mineralisation of soil organic matter, nitrification and immobilisation of ammonium and nitrate into microbial biomass. The amount of ammonium available is sufficient to cover the entire N demand of the spruce trees. The data demonstrate the existence of a highly dynamic internal N cycle within the soil, driven by growth and death of the microbial biomass, which turns over approximately seven times each year. Although input and output fluxes are of high environmental significance, they are low compared to the internal fluxes mediated by microbial activity.Plant Biology 10/2009; 11(5):643-9. · 2.39 Impact Factor -
Article: Effect of N-deposition on long term soil acidification simulations of forest ecosystems in Germany
[show abstract] [hide abstract]
ABSTRACT: Acidification of forest soils has been a big issue in the mid 70s of the last century due to an immense output of sulphur by the industry and of course also by nitrogen, leading to forest decline and a shift in biodiversity. The deposition peaked during the 1980s and a number of conventions (e.g. Gothenburg Protocol) have been signed, agreeing to reduce industrial emissions. Today, the sulphate deposition has been reduced significantly due to the use of filter systems by the industry, whereas nitrogen depositions (NH4, NO3) are still on a high level (ca. 40 kg N ha-1 yr-1). In this study, a soil acidification submodule based on SAFE (Soil Acidification of Forest Ecosystems) has been implemented into the Modular Biosphere Simulation Environment (MoBilE). MoBilE is a model framework already capable to simulate N and C turnover in forest ecosystems and associated nutrient losses e.g. N leaching and trace gas emissions (CO2, N2O, NO, N2, CH4). The aim of the study is to investigate the impact of elevated atmospheric N deposition on forest acidification and eutrophication. This will be done retrospectively for the years 1920-2000 and by application of future deposition and climate scenarios (A1B, B1) for the years 2000-2030, the latter especially with respect to the evaluation of the recovery potential of forest ecosystems. Long term soil acidification simulation results of German Level II sites are shown as well as model sensitivity studies. Furthermore, first results of the linkage between MoBiLE, the BERN model and a stochastic ecosystem type model to address N-deposition effects on biodiversity will be demonstrated.03/2009; 11:10693. -
Article: Atmospheric c omposition c hange: e cosystems - a tmosphere interactions
Atmospheric Environment. 01/2009; 43:5193-5267. -
Article: Model evaluation of different mechanisms driving freeze-thaw N2O emissions
[show abstract] [hide abstract]
ABSTRACT: N2O emissions from soil contribute significantly to global warming. Pulse emissions of N2O from soils during freeze-thawing were recently recognized as important atmospheric sources. In this modelling study we explore three different hypotheses for explaining freeze-thaw related N2O emissions: (1) soil frost or snow cover may reduce gas diffusion and create anaerobic conditions that stimulate N2O production via denitrification, (2) microbes that die of frost deliver easy decomposable organic carbon and nitrogen to the soil, which stimulates microbial growth and vigorous N2O production during freeze-thaw, and (3) the enzyme nitrous oxide reductase, which is responsible for the reduction of N2O to N2 during denitrification, is more sensitive to low temperatures than other enzymes, so that N2O becomes the dominating end-product of denitrification at low temperatures. These hypotheses were tested with a biogeochemical model that combines hydrology and physics calculations with a newly developed, parameter-poor biochemistry module. The model was first calibrated with field datasets on soil-atmosphere fluxes of N2O, NO and CO2 and soil NO3 and NH4 concentrations that were measured in a spruce forest in Southeast Germany in the years 1994-1997. Subsequently, additional model mechanisms were implemented that allow the model to describe the outlined mechanisms potentially driving freeze-thaw N2O fluxes. After each implementation the model was recalibrated. We were able to mimic dimension and timing of high N2O emissions when either one of the first two hypotheses were assumed, but found no confirmation for the third. The best model fit was achieved by combining hypothesis one and two, indicating that freeze-thaw N2O emissions are not mono-causal.Agriculture Ecosystems & Environment 01/2009; 133(3-4):196-207. · 3.00 Impact Factor -
Article: Site specific and regional estimates of methane uptake by tropical rainforest soils in north eastern Australia
[show abstract] [hide abstract]
ABSTRACT: Methane flux from rainforest soils in northeast Queensland, Australia, was investigated using a combination of laboratory, field and simulation modelling. In aerobic laboratory incubations, CH4 uptake in the top 0.1m of the soil (−2.5 to −7.3μg CH4 kg−1 SDW day−1) is approximately one order of magnitude higher than CH4 production under anaerobic conditions. The highest CH4 uptake, as well as potential CH4 production is found in the uppermost C rich soil layers. Detailed measurements from three contrasting rainforest sites identified the soils to be functioning as sinks for atmospheric CH4. Fifteen months continuous measurement at one of the lowland rainforest sites showed that the seasonality of CH4 uptake was mainly driven by changes in soil moisture rather than by temperature changes. Maximum CH4 uptake (109μg CH4 m−2 h−1) was observed during dry season conditions, whereas during the wet season, CH4 uptake decreased significantly to near zero. Based on our laboratory experiments and on published literature we developed a semi-empirical CH4 module for the biogeochemical model ForestDNDCtropica. Tests at several sites showed the robustness of our modelling approach with mean simulated values within 12% of observed values. To estimate regional CH4 uptake by rainforest soils in the region of the ‘Wet Tropics’, Queensland, Australia, we linked CH4 uptake and production algorithms to a regional GIS database. We estimated that the lowland and montane rainforest soils in northeast Queensland, Australia, were a net sink for CH4 with a mean uptake rate of −2.89kg CH4 ha−1 year−1 during July 1996 to June 1997 period.Plant and Soil 07/2008; 309(1):211-226. · 2.73 Impact Factor -
Article: Impact of gas transport through rice cultivars on methane emission from rice paddy fields
[show abstract] [hide abstract]
ABSTRACT: Two Italian rice (Oryza sativa var. japonica) cultivars, Lido and Roma, were tested in the field for methane production, oxidation and emission. In two consecutive years, fields planted with the rice cultivar Lido showed methane emissions 24–31% lower than fields planted with the cultivar Roma. This difference was observed irrespective of fertilizer treatment. In contrast to methane emissions, differences in methane production or oxidation were not observed between fields planted with the two cultivars. Plant-mediated transport of methane from the sediment to the atmosphere was the dominating pathway of methane emission. During the entire vegetation period, the contribution of this pathway to total methane emission amounted to c. 90%, whereas the contribution of gas bubble release and of diffusion through the water column to total methane emission was of minor significance. Results obtained from transport studies of tracer gas through the aerenchyma system of rice plants demonstrated that the root–shoot transition zone is the main site of resistance to plant-mediated gas exchange between the soil and the atmosphere. The cultivar Lido, showing relatively low methane emissions in the field, had a significantly lower gas transport capacity through the aerenchyma system than the cultivar Roma. Thus, the observed differences in methane emissions in the field between the cultivars Lido and Roma can be explained by different gas transport capacities. Apparently, these differences in gas transport capacities are a consequence of differences in morphology of the aerenchyma systems, especially in the root–shoot transition zone. It is, therefore, concluded that identification and use of high-yielding rice cultivars which have a low gas transport capacity represent an economically feasible, environmentally sound and promising approach to mitigating methane emissons from rice paddy fields.Plant Cell and Environment 06/2008; 20(9):1175 - 1183. · 5.22 Impact Factor -
Article: Nitrogen dynamics of a mountain forest on dolomitic limestone – A scenario-based risk assessment
[show abstract] [hide abstract]
ABSTRACT: The dominant nitrogen (N) fluxes were simulated in a mountain forest ecosystem on dolomitic bedrock in the Austrian Alps. Based on an existing small-scale climate model the simulation encompassed the present situation and a 50-yr projection. The investigated scenarios were current climate, current N deposition (SC1) and future climate (+2.5 °C and +10% annual precipitation) with three levels of N deposition (SC2, 3, 4). The microbially mediated N transformation, including the emission of nitrogen oxides, was calculated with PnET-N-DNDC. Soil hydrology was calculated with HYDRUS and was used to estimate the leaching of nitrate. The expected change of the forest ecosystem due to changes of the climate and the N availability was simulated with PICUS. The incentive for the project was the fact that forests on dolomitic limestone stock on shallow Rendzic Leptosols that are rich in soil organic matter are considered highly sensitive to the expected environmental changes. The simulation results showed a strong effect due to increased temperatures and to elevated levels of N deposition. The outflux of N, both as nitrate (6–25 kg N ha−1 yr−1) and nitrogen oxides (1–2 kg N ha−1 yr−1), from the forest ecosystem are expected to increase. Temperature exerts a stronger effect on the N2O emission than the increased rate of N deposition. The main part of the N emission will occur as N2 (15 kg N ha−1 yr−1). The total N loss is partially offset by increased rates of N uptake in the biomass due to an increase in forest productivity.Environmental Pollution. 01/2008; -
Article: Challenges in quantifying biosphere-atmosphere exchange of nitrogen species.
[show abstract] [hide abstract]
ABSTRACT: Recent research in nitrogen exchange with the atmosphere has separated research communities according to N form. The integrated perspective needed to quantify the net effect of N on greenhouse-gas balance is being addressed by the NitroEurope Integrated Project (NEU). Recent advances have depended on improved methodologies, while ongoing challenges include gas-aerosol interactions, organic nitrogen and N(2) fluxes. The NEU strategy applies a 3-tier Flux Network together with a Manipulation Network of global-change experiments, linked by common protocols to facilitate model application. Substantial progress has been made in modelling N fluxes, especially for N(2)O, NO and bi-directional NH(3) exchange. Landscape analysis represents an emerging challenge to address the spatial interactions between farms, fields, ecosystems, catchments and air dispersion/deposition. European up-scaling of N fluxes is highly uncertain and a key priority is for better data on agricultural practices. Finally, attention is needed to develop N flux verification procedures to assess compliance with international protocols.Environmental Pollution 12/2007; 150(1):125-39. · 3.75 Impact Factor -
Article: Effect of pH, temperature and substrate on N2O, NO and CO2 production by Alcaligenes faecalis p.
[show abstract] [hide abstract]
ABSTRACT: To study the effect of pH, temperature and substrate on the magnitude of N(2)O and NO production by heterotrophic nitrifiers. The change in N(2)O and NO production by the heterotrophic nitrifiers Alcaligenes faecalis subsp. parafaecalis and Paracoccus pantotrophus because of variations in pH, temperature and substrate was studied in chemostat cultures under steady-state conditions. N(2)O, NO and CO(2) production increased with temperature between 4 and 32 degrees C. For N(2)O an optimum temperature of 28 degrees C was observed. No optimum temperature was found for NO. Highest N(2)O and CO(2) productions were observed at a pH of 7.0. However, besides having an optimum at pH 7.0, especially NO production but also N(2)O production increased significantly at pH <or= 4.0. This increase in NO production under acidic conditions was partly because of chemo-denitrification, which contributed up to 62% of total NO production at pH 3.0 (0.8% for N(2)O). Furthermore, we could demonstrate that substrate quality significantly affects N(2)O, NO and CO(2) production. N(2)O and especially NO production by A. faecalis p. was significantly lower on an ammonium citrate medium when compared with rates obtained for a peptone-meat extract medium. The results indicate that heterotrophic nitrifiers are suitable model organisms to study the influence of environmental factors on microbial N trace gas production. SIGNIFICANCE IMPACT OF THE STUDY: The results allow an improved description, e.g. of the pH dependency of N trace gas production by microbes and/or chemo-denitrification in process-oriented models describing the exchange of N trace gases between soils and the atmosphere.Journal of Applied Microbiology 10/2006; 101(3):655-67. · 2.34 Impact Factor -
Article: Nitrogen load and forest type determine the soil emission of nitrogen oxides (NO and N2O)
[show abstract] [hide abstract]
ABSTRACT: Soil emissions of NO and N2O were measured continuously at high frequency for more than one year at 15 European forest sites as part of the EU-funded project NOFRETETE. The locations represent different forest types (coniferous/deciduous) and different nitrogen loads. Geographically they range from Finland in the north to Italy in the south and from Hungary in the east to Scotland in the west. The highest NO emissions were observed from coniferous forests, whereas the lowest NO emissions were observed from deciduous forests. The NO emissions from coniferous forests were highly correlated with N-deposition. The site with the highest average annual emission (82 μg NO-Nm-2 h-1) was a spruce forest in South-Germany (Höglwald) receiving an annual N-deposition of 2.9 gm-2. NO emissions close to the detection limit were observed from a pine forest in Finland where the N-deposition was 0.2 g N m-2 y-1. No significant correlation between N2O emission and N-deposition was found. The highest average annual N2O emission (20 μg N2O-Nm-2 h-1) was found in an oak forest in the Mátra mountains (Hungary) receiving an annual N-deposition of 1.6 gm-2. N2O emission was significantly negatively correlated with the C/N ratio. The difference in N-oxide emissions from soils of coniferous and deciduous forests may partly be explained by differences in N-deposition rates and partly by difference in characteristics of the litter layer and soil. NO was mainly derived from nitrification whereas N2O was mainly derived from denitrification. In general, soil moisture is lower at coniferous sites (at least during spring time) and the litter layer of coniferous forests is thick and well aerated favouring nitrification and thus release of NO. Conversely, the higher rates of denitrification in deciduous forests due to a compact and moist litter layer lead to N2O production and NO consumption in the soil. The two factors soil moisture and soil temperature are often explaining most of the temporal variation within a site. When comparing annual emissions on a regional scale, however, factors such as nitrogen deposition and forest and soil type become much more important.Biogeosciences Discussions 05/2006; 3:837-869. -
Chapter: Effects of Tree Species on C- and N-Cycling and Biosphere-Atmosphere Exchange of Trace Gases in Forests
01/2006: pages 165-172; -
Article: Production of NO and N2O by the heterotrophic nitrifier Alcaligenes faecalis parafaecalis under varying conditions of oxygen saturation
Geomicrobiology J. 01/2006; 23(3):165-176. -
Article: Nitrogen load and forest type determine the soil emission of nitrogen oxides (NO and N<sub>2</sub>O)
[show abstract] [hide abstract]
ABSTRACT: Soil emissions of NO and N<sub>2</sub>O were measured continuously at high frequency for more than one year at 15 European forest sites as part of the EU-funded project NOFRETETE. The locations represent different forest types (coniferous/deciduous) and different nitrogen loads. Geographically they range from Finland in the north to Italy in the south and from Hungary in the east to Scotland in the west. The highest NO emissions were observed from coniferous forests, whereas the lowest NO emissions were observed from deciduous forests. The NO emissions from coniferous forests were highly correlated with N-deposition. The site with the highest average annual emission (82 ?g NO-Nm<sup>?2</sup> h<sup>?1</sup>) was a spruce forest in South-Germany (Höglwald) receiving an annual N-deposition of 2.9 gm<sup>?2</sup>. NO emissions close to the detection limit were observed from a pine forest in Finland where the N-deposition was 0.2 g N m<sup>?2</sup> y<sup>?1</sup>. No significant correlation between N<sub>2</sub>O emission and N-deposition was found. The highest average annual N<sub>2</sub>O emission (20 ?g N<sub>2</sub>O-Nm<sup>?2</sup> h<sup>?1</sup>) was found in an oak forest in the Mátra mountains (Hungary) receiving an annual N-deposition of 1.6 gm<sup>?2</sup>. N<sub>2</sub>O emission was significantly negatively correlated with the C/N ratio. The difference in N-oxide emissions from soils of coniferous and deciduous forests may partly be explained by differences in N-deposition rates and partly by difference in characteristics of the litter layer and soil. NO was mainly derived from nitrification whereas N<sub>2</sub>O was mainly derived from denitrification. In general, soil moisture is lower at coniferous sites (at least during spring time) and the litter layer of coniferous forests is thick and well aerated favouring nitrification and thus release of NO. Conversely, the higher rates of denitrification in deciduous forests due to a compact and moist litter layer lead to N<sub>2</sub>O production and NO consumption in the soil. The two factors soil moisture and soil temperature are often explaining most of the temporal variation within a site. When comparing annual emissions on a regional scale, however, factors such as nitrogen deposition and forest and soil type become much more important.01/2006; -
Article: Inventories of N<sub>2</sub>O and NO emissions from European forest soils
[show abstract] [hide abstract]
ABSTRACT: Forest soils are a significant source for the primary and secondary greenhouse gases N<sub>2</sub>O and NO. However, current estimates are still uncertain due to the still limited number of field measurements and the herein observed pronounced variability of N trace gas fluxes in space and time, which are due to the variation of environmental factors such as soil and vegetation properties or meteorological conditions. To overcome these problems we further developed a process-oriented model, the PnET-N-DNDC model, which simulates the N trace gas exchange on the basis of the processes involved in production, consumption and emission of N trace gases. This model was validated against field observations of N trace gas fluxes from 19 sites obtained within the EU project NOFRETETE, and shown to perform well for N<sub>2</sub>O (r<sup>2</sup>=0.68, slope=0.76) and NO (r<sup>2</sup>=0.78, slope=0.73). For the calculation of a European-wide emission inventory we linked the model to a detailed, regionally and temporally resolved database, comprising climatic properties (daily resolution), and soil parameters, and information on forest areas and types for the years 1990, 1995 and 2000. Our calculations show that N trace gas fluxes from forest soils may vary substantial from year to year and that distinct regional patterns can be observed. Our central estimate of NO emissions from forest soils in the EU amounts to 98.4, 84.9 and 99.2 kt N yr<sup>?1</sup>, using meteorology from 1990, 1995 and year 2000, respectively. This is <1.0% of pyrogenic NO<sub>x</sub> emissions. For N<sub>2</sub>O emissions the central estimates were 86.8, 77.6 and 81.6 kt N yr<sup>?1</sup>, respectively, which is approx. 14.5% of the source strength coming from agricultural soils. An extensive sensitivity analysis was conducted which showed a range in emissions from 44.4 to 254.0 kt N yr<sup>?1</sup> for NO and 50.7 to 96.9 kt N yr<sup>?1</sup> for N<sub>2</sub>O, for year 2000 meteorology. The results show that process-oriented models coupled to a GIS are useful tools for the calculation of regional, national, or global inventories of biogenic N trace gas emissions from soils. This work represents the most comprehensive effort to date to simulate NO and N<sub>2</sub>O emissions from European forest soils.01/2005;
Top co-authors
Top Journals
Institutions
-
2012
-
Mercator Research Institute on Global Commons and Climate Change
Berlin Schöneberg, Land Berlin, Germany -
Universität Bayreuth
Bayreuth, Bavaria, Germany
-
-
2002–2009
-
Technische Universität München
- Lehrstuhl für Waldernährung und Wasserhaushalt
München, Bavaria, Germany
-
-
2004
-
University of New Hampshire
Durham, NH, USA
-
