Study of NOx and CO2 production of cultivated soil in closed microcosm experimental system

Kampfl, Gy.; Kristóf, Krisztina; Algaidi, Abdousalam Ahmed; Hamuda, Hosam E. A. F. Bayoumi; Heltai, György

doi:10.1016/j.microc.2006.05.003

Cited by 10 publications

(3 citation statements)

References 22 publications

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“…The dynamics of N 2 O formation did not show such unambiguous tendency: in the soil columns during the vegetation period two or three outlying maxima can be observed which are more or less synchronous with the maxima of CO 2 production, while in the mesocosm pots only in the initial period (until the 6th day) could be detected a peak. This kind of shift in dynamics of CO 2 and N 2 O formation was observed in our earlier [23] and recent microcosm experiments as it is presented on Figure 3. Table 2 Cumulative values of CO2 production given in mg units measured during the vegetation period in the gas traps built into 20 cm depth of the soil of the mesocosm pot experiment.…”

Section: Resultssupporting

confidence: 79%

“…Tables 1 and 2 Brought to you by | MIT Libraries Authenticated Download Date | 5/13/18 8:00 AM As it can be observed on Figures 1 and 2, the CO 2 concentration in the gas traps in both experimental systems has changed similarly during the vegetation period, ie after a stagnation period, one or two maximums decreased to the initial level until the harvest time. These changes have shown a good correlation with the mean daily temperature [20,23]. The dynamics of N 2 O formation did not show such unambiguous tendency: in the soil columns during the vegetation period two or three outlying maxima can be observed which are more or less synchronous with the maxima of CO 2 production, while in the mesocosm pots only in the initial period (until the 6th day) could be detected a peak.…”

Section: Resultsmentioning

confidence: 88%

“…On the contrary, in the mesocosm pots the CO 2 and the N 2 O production was increased when manuring or mineral fertilisers were applied. The order has followed the grain yield increasing effects of the plant nutrients treatments: (manure) < (mineral fertiliser) < (manure) + (mineral fertiliser) [23]. Table 3 Cumulative values of N2O production given in ng units measured during the vegetation period in the gas traps built into 20 cm depth of the soil of the mesocosm pot experiment.…”

Section: Resultsmentioning

confidence: 99%

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Contribution of Agricultural Field Production to Emission of Greenhouse Gases (Ghg)

Bálint¹,

Hoffmann²,

Anton³

et al. 2013

Ecological Chemistry and Engineering S

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According to global inventories the agricultural field production contributes in a significant measure to increase of concentration of greenhouse gases (CO2, N2O, CH4) in the atmosphere, however their estimated data of emissions of soil origin differ significantly. Particularly estimates on nitrogen-oxides emissions show a great temporal and spatial variability while their formations in microbial processes are strongly influenced by biogeochemical and physical properties of the soil (eg microbial species, soil texture, soil water, pH, redox-potential and nutrient status) and land use management through the impact of the application of natural and synthetic fertilisers, tillage, irrigation, compaction, planting and harvesting. The different monitoring systems and inventory models were developed mostly from atmospheric chemistry point of view and little comprehensive data exist on the processes related to GHG emissions and their productions in agricultural soils under ecological conditions of Central Europe. This paper presents the new results of a project aimed elaboration of an experimental system suitable for studying relationships between the production and emission of greenhouse gases and plant nutrition supply in agricultural soils under Hungarian ecological conditions. The system was based on a long-term fertilisation field experiment. Mesocosm size pot experiments were conducted with soils originating from differently treated plots. The production of CO2 and N2O was followed during the vegetation period in gas traps built in 20 cm depth. Undisturbed soil columns were prepared from the untreated side parcels of the field experiment and the production of CO2 and N2O was studied at 20, 40 and 60 cm depth. A series of laboratory microcosm experiments were performed to clarify the microbial and environmental effects influencing the gas production in soils. The CO2 and N2O were determined by gas chromatography. The NOx was detected by chemiluminescence method in headspace of microcosms. In the mesocosm and soil columns experiments influence of plant nutrition methods and environmental factors was successfully clarified on seasonal dynamics and depth profile on CO2 and N2O productions. The database developed is suitable for estimating CO2 and N2O emissions from agricultural soils.

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Section: Resultssupporting

confidence: 79%

Section: Resultsmentioning

confidence: 88%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Contribution of Agricultural Field Production to Emission of Greenhouse Gases (Ghg)

Bálint¹,

Hoffmann²,

Anton³

et al. 2013

Ecological Chemistry and Engineering S

View full text Add to dashboard Cite

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The regulatory role of endogenous iron on greenhouse gas emissions under intensive nitrogen fertilization in subtropical soils of China

Han

Shi

Wang

et al. 2018

Environ Sci Pollut Res

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Anaerobic batch experiments were conducted to study the regulatory role of endogenous iron in greenhouse gas emissions under intensive nitrogen fertilization in subtropical soils of China. Fe, Fe, and NO-N dynamics and NO, CH, and CO emissions, as well as the relationships between N fertilizer, endogenous iron, and greenhouse gas emissions were investigated. The emissions of NO increased to different extents from all the test soils by N1 (260 mg N kg) application compared with N0. After 24 days of anaerobic incubation, the cumulative emissions of NO from red soils in De'an (DR) were significantly higher than that from paddy soils in De'an (DP) and Qujialing (QP) under N1. However, N application enhanced CH and CO emissions from the red soils slightly but inhibited the emissions from paddy soils. The maximal CH and CO emission fluxes occurred in DP soil without N input. Pearson's correlation analysis showed that there were significant correlations (P< 0.01) between Fe and Fe, NO-N, (NO + N)-N concentrations in DP soil, implying that Fe oxidation was coupled with nitrate reduction accompanied by (NO + N)-N emissions and the endogenous iron played a regulatory role in greenhouse gas emissions mainly through the involvement in denitrification. The proportion of the electrons donated by Fe used for NO production in denitrification in DP soil was approximately 37.53%. Moreover, positive correlations between Fe and CH, CO were found in both DR and QP soils, suggesting that endogenous iron might regulate the anaerobic decomposition of organic carbon to CH and CO in the two soils. Soil pH was also an important factor controlling greenhouse gas emissions by affecting endogenous iron availability and C and N transformation processes.

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Investigation of ferrous iron-involved anaerobic denitrification in three subtropical soils of southern China

et al. 2018

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Study of NOx and CO2 production of cultivated soil in closed microcosm experimental system

Cited by 10 publications

References 22 publications

Contribution of Agricultural Field Production to Emission of Greenhouse Gases (Ghg)

Contribution of Agricultural Field Production to Emission of Greenhouse Gases (Ghg)

The regulatory role of endogenous iron on greenhouse gas emissions under intensive nitrogen fertilization in subtropical soils of China

Investigation of ferrous iron-involved anaerobic denitrification in three subtropical soils of southern China

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