Nitrous oxide emissions and denitrificationN-losses from forest soils in the Bornhöved Lake region (Northern Germany).

Mogge, Bernhard; Kaiser, Ernst‐August; Munch, Jean Charles

doi:10.1016/s0038-0717(97)00205-8

Cited by 44 publications

(32 citation statements)

References 22 publications

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“…Brumme et al (1999) distinguished three types of emission patterns determined by the differences in temporal variation: (Table 2). Similar and relatively constant N 2 O emissions were found in one forest in Finland (Martikainen et al, 1994), three forests in the UK (Skiba et al, 1996), one other forest in Germany (Mogge et al, 1998) and two forests in Denmark (Ambus and Christensen, 1995), with annual emissions ranging from 0.12 to 0.8 kg N 2 O-N ha -1 yr -1 (Appendix 1). Only two of the sites studied by Brumme et al (1999) appeared to display 'seasonal' patterns.…”

Section: Materials Description and Methodssupporting

confidence: 60%

“…They observed, for the same soil, that wetter soil at lower temperatures had higher fluxes than drier soil at higher temperatures (0.47 kg N ha -1 with a mean soil moisture content of 34% of soil dry weight and average soil temperature of 10ºC for 1993; and 0.3 kg N ha -1 with a mean soil moisture content of 25% of soil dry weight and average soil temperature of 12ºC for 1994). Mogge et al (1998), in their study of two forest sites in Höglwald, Germany, show that an increase in soil moisture, due to precipitation, contributed to the high N 2 O emissions observed at both sites (precipitation recorded from July to September and in December). The same positive correlation was reported in another of their studies (Mogge et al, 1999).…”

Section: (∆) Data Points From Managed Grassland In Wmentioning

confidence: 98%

“…Nitrous oxide is of great interest from an environmental point of view because it is an important greenhouse gas present in the lower atmosphere (the troposphere) at about 0.00003%. Although N 2 O constitutes only 6% of the anthropogenic greenhouse effect (Bouwman, 1998), it has a radiative forcing 180 times greater than carbon dioxide (Lashof and Ahuja, 1990;Mogge et al, 1998). It also contributes to the depletion of stratospheric ozone.…”

Section: Introductionmentioning

confidence: 99%

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Nitrous oxide emission from a range of land uses across Europe

Machefert

Dise

Goulding

et al. 2002

Hydrol. Earth Syst. Sci.

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The results of a literature study examining quantitative estimates of N 2 O emission rates are presented for a range of land-uses across Europe. The analysis shows that the highest N 2 O emission rates are for agricultural lands compared to forests and grasslands. The main factors regulating these rates are available mineral nitrogen, soil temperature, soil water content and the available labile organic compounds. These controls operate across different time-scales, all must exceed a certain threshold for N 2 O emission to occur. The results support the need for an emission factor function of land-use and climate within models describing nitrogen dynamics in catchments. This would allow the assessment of the net N 2 O emission within catchments in terms of current levels and potential changes associated with climate variability, climate change and land use change.

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Section: Materials Description and Methodssupporting

confidence: 60%

Section: (∆) Data Points From Managed Grassland In Wmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Nitrous oxide emission from a range of land uses across Europe

Machefert

Dise

Goulding

et al. 2002

Hydrol. Earth Syst. Sci.

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“…Different studies reported considerably higher values for N 2 O emissions from drained black alder stands, varying from 5 to 75 kg N ha −1 yr −1 (Mogge et al, 1998;Augustin, 1998;Brumme et al, 1999;Merbach et al, 2001;Hefting et al, 2003;von Arnold et al, 2005). According to Klemedtsson et al (2005), NO − 3 availability is the main driver of N 2 O emissions from drained histosols.…”

Section: Factors Controlling Temporal and Site-specific Variation In mentioning

confidence: 99%

Nitrogen mineralization and gaseous nitrogen losses from waterlogged and drained organic soils in a black alder (<i>Alnus glutinosa</i> (L.) Gaertn.) forest

et al. 2014

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Abstract. Black alder (Alnus glutinosa (L.) Gaertn.) forests on peat soils have been reported to be hotspots for high nitrous oxide (N 2 O) losses. High emissions may be attributed to alternating water tables of peatlands and to the incorporation of high amounts of easily decomposable nitrogen (N) into the ecosystem by symbiotic dinitrogen (N 2 )-fixation of alder trees. Our study addressed the question to what extent drainage enhances the emissions of N 2 O from black alder forests and how N turnover processes and physical factors influence the production of N 2 O and total denitrification. The study was conducted in a drained black alder forest with variable groundwater tables at a southern German fen peatland. Fluxes of N 2 O were measured using the closed chamber method at two drained sites (D-1 and D-2) and one undrained site (U). Inorganic N contents and net N mineralization rates (NNM) were determined. Additionally a laboratory incubation experiment was carried out to investigate greenhouse gas and N 2 fluxes at different temperature and soil moisture conditions. Significantly different inorganic N contents and NNM rates were observed, which however did not result in significantly different N 2 O fluxes in the field but did in the laboratory experiment. N 2 O fluxes measured were low for all sites, with total annual emissions of 0.51 ± 0.07 (U), 0.97 ± 0.13 (D-1) and 0.93 ± 0.08 kg N 2 O-N ha −1 yr −1 (D-2). Only 37 % of the spatiotemporal variation in field N 2 O fluxes could be explained by peat temperature and groundwater level, demonstrating the complex interlinking of the controlling factors for N 2 O emissions. However, temperature was one of the key variables of N 2 O fluxes in the incubation experiment conducted. Increasing soil moisture content was found to enhance total denitrification losses during the incubation experiment, whereas N 2 O fluxes remained constant. At the undrained site, permanently high groundwater level was found to prevent net nitrification, resulting in a limitation of available nitrate (NO − 3 ) and negligible gaseous N losses. N 2 O flux rates that were up to four times higher were measured in the incubation experiment. They reveal the potential of high N 2 O losses under changing soil physical conditions at the drained alder sites. The high net nitrification rates observed and high NO − 3 contents bear the risk of considerable NO − 3 leaching at the drained sites.

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“…N 2 O is an important greenhouse gas: it contributes approximately 6% of the total effect of all anthropogenically-enhanced greenhouse gases to global warming (Denmead, 1991) and has a radiative forcing 180 times greater than carbon dioxide (Mogge et al, 1998). However, denitrification in riparian soils may have the positive effect of reducing the hydrological export of reactive N to the river channel, especially in agricultural catchments that receive high loads of fertiliser N.…”

Section: Introductionmentioning

confidence: 99%

Hydrological controls on denitrification in riparian ecosystems

Machefert

Dise

2004

Hydrol. Earth Syst. Sci.

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Nitrous oxide fluxes and denitrification rates were measured in situ over a year at a riparian site in the UK. An exponential relationship was found between denitrification rates and soil moisture, with a sharp increase in denitrification rate at a water-filled pore space of 6080%. Similar relationships were found in other studies compiled for comparison. The present study is unique in measuring denitrification in an intact ecosystem in the field, rather than in cores in the field or the lab. The exponential relationship between denitrification rate and soil moisture, with a threshold at 6080% water-filled pore space (2040% gravimetric moisture), has proven to be comparable across a wide range of ecosystems, treatments and study conditions. Whereas moisture content determines the potential for denitrification, the absolute rate of denitrification is determined by available nitrate (NO 3 ), dissolved organic carbon and temperature. As a first approximation, denitrification rates can be simply modelled by using a general exponential relationship between denitrification potential and water-filled pore space (or volumetric/gravimetric water content) multiplied by a constant value determined by the nitrogen status of the site. As such, it is recommended that the current relationship used in INCA to relate denitrification to soil moisture be amended to an exponential form, with a threshold of approximately 70% for the onset of denitrification.

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Nitrous oxide emissions and denitrificationN-losses from forest soils in the Bornhöved Lake region (Northern Germany).

Cited by 44 publications

References 22 publications

Nitrous oxide emission from a range of land uses across Europe

Nitrous oxide emission from a range of land uses across Europe

Nitrogen mineralization and gaseous nitrogen losses from waterlogged and drained organic soils in a black alder (<i>Alnus glutinosa</i> (L.) Gaertn.) forest

Hydrological controls on denitrification in riparian ecosystems

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Nitrous oxide emissions and denitrificationN-losses from forest soils in the Bornhöved Lake region (Northern Germany).

Cited by 44 publications

References 22 publications

Nitrous oxide emission from a range of land uses across Europe

Nitrous oxide emission from a range of land uses across Europe

Nitrogen mineralization and gaseous nitrogen losses from waterlogged and drained organic soils in a black alder (&lt;i&gt;Alnus glutinosa&lt;/i&gt; (L.) Gaertn.) forest

Hydrological controls on denitrification in riparian ecosystems

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Nitrogen mineralization and gaseous nitrogen losses from waterlogged and drained organic soils in a black alder (<i>Alnus glutinosa</i> (L.) Gaertn.) forest