Nitrous Oxide Emission from Soils

Sahrawat, K. L.; Keeney, D. R.

doi:10.1007/978-1-4613-8612-4_2

Cited by 183 publications

(96 citation statements)

References 129 publications

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“…During the period 1967-1995, the decline of the total nitrogen content ranged from 0.50 t N ha-1 to 3.25 t N ha-1 that is mean annual rate of loss was in the range of 19-120 kg N ha-1 in the soils of different physiographic units (Table 4). Our results agree with the findings of Groffman and Tiedje (1989) and Sahrawat and Keeney (1986) who reported a maximum annual loss of 40 kg N ha-1 from the north temperate forest soils and 42.5 kg N ha-1 from drained marsh soils of Wisconsin University Arboretum sites, respectively. Terry et al (1981) reported much higher losses of 50 to 165 kg N ha-1 from cultivated organic soils in South Florida.…”

Section: Discussionsupporting

confidence: 92%

Soil degradation during the period 1967–1995 in Bangladesh

Ali

Saheed²,

Kubota

et al. 1997

Soil Science and Plant Nutrition

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Section: Discussionsupporting

confidence: 92%

Soil degradation during the period 1967–1995 in Bangladesh

Ali

Saheed²,

Kubota

et al. 1997

Soil Science and Plant Nutrition

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“…The effects of soil temperature on soil N 2 O fluxes are also well known and have been demonstrated for several types of ecosystem (Klemedtsson et al, 1997;Regina et al, 1999). N 2 O fluxes tend to correlate with soil temperature, because microbiological processes regulate the production and consumption of N 2 O in soil (Sahrawat and Keeney, 1986). Correlation analysis in the current study showed that there did not exist a significant relationship between air or soil temperatures and N 2 O emissions in P. australis community, but the significant relationship between N 2 O emissions and temperature was found in other three positions.…”

Section: Discussionmentioning

confidence: 97%

Seasonal dynamics in nitrous oxide emissions under different types of vegetation in saline-alkaline soils of the Yellow River Delta, China and implications for eco-restoring coastal wetland

Zhang

Song

Zhang

et al. 2013

Ecological Engineering

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a b s t r a c tSalt-affected soils are extensively present and constitute about 7% of total land surface. However, our knowledge about nitrous oxide (N 2 O) production through rapid nitrification and denitrification processes between the atmosphere and the saline soil is very limited. In order to evaluate the potential of N 2 O consumption in saline soils, this study was therefore designed to quantify the variability in N 2 O emissions monthly in the Yellow River Delta in China. Main issues include: different saline-alkaline soils and temporal aspects. Our aim was to quantify N 2 O emissions and identify the major drivers controlling its emissions for providing guidance in eco-restoring coastal wetland on large scale. By using in situ closed chambers the annual average emissions of N 2 O from the mudflat was determined and it was significantly higher than plant communities, especially herbage communities. In general, the emissions of N 2 O of different ecosystems showed a unique-peak annual pattern, with the peak in September. Saline-alkaline mudflat and different vegetations acted as N 2 O source in the Yellow River Delta and the N 2 O emission of different ecosystems followed the order: Saline-alkaline mudflat > T. chinensis >S. salsa > P. australis. Therefore restoration of saline land through revegetation was necessary to reduce the N 2 O emission of saline soils. The effects of air and soil temperature on N 2 O fluxes were significant in salt-affected soils except P. australis. Soil water content and electrical conductivity correlated positively or negatively with N 2 O emissions in mudflat and P. australis community. While relationships between N 2 O production and other soil properties (TC, TN, C:N ratio, NH 4 + -N and NO 3 − -N) were only significant in mudflat and T. chinensis community. Temporal variations of N 2 O emission were related to the interactions of abiotic factors (air and soil temperature, soil water content and electrical conductivity) and the variations of other soil properties, while spatial variations were mainly affected by the vegetation composition at spatial scale.

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“…Nitrification is thought to be the major source of N20 in aerobic soils [Bremner and Blacknet, 1978;Sahrawat and Keeney, 1986], and high rates of nitrification are generally associated with strongly aerobic conditions [Focht and Verstraete, 1977]. Denitrification activity is generally associated with anaerobic soil conditions [Groffman, 1991].…”

Section: Factors Controlling Nitrous Oxide Exchangementioning

confidence: 99%

Micrometeorological measurements of methane and nitrous oxide exchange above a boreal aspen forest

et al. 1997

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Abstract. This paper presents tower-based measurements of methane (CH4) and nitrous oxide (N20) exchange between a boreal aspen stand and the atmosphere. Boreal ecosystems are a priority trace gas research area, and the work was conducted as part of the Boreal Ecosystem-Atmosphere Study (BOREAS). Methane and nitrous oxide fluxes were measured continuously between April 16 and September 16, 1994, in the Prince Albert National Park, Saskatchewan. The fluxes were determined using a high-resolution tunable diode laser Trace Gas Analysis System (TGAS) together with micrometeorological techniques. Both the CH 4 and the N20 fluxes were small and required long averaging times to be resolved. Over the full experiment, small emissions of both 29,331

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Nitrous Oxide Emission from Soils

Cited by 183 publications

References 129 publications

Soil degradation during the period 1967–1995 in Bangladesh

Soil degradation during the period 1967–1995 in Bangladesh

Seasonal dynamics in nitrous oxide emissions under different types of vegetation in saline-alkaline soils of the Yellow River Delta, China and implications for eco-restoring coastal wetland

Micrometeorological measurements of methane and nitrous oxide exchange above a boreal aspen forest

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