2022
DOI: 10.1073/pnas.2200354119
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A gap in nitrous oxide emission reporting complicates long-term climate mitigation

Abstract: Nitrous oxide (N 2 O) is an important greenhouse gas (GHG) that also contributes to depletion of ozone in the stratosphere. Agricultural soils account for about 60% of anthropogenic N 2 O emissions. Most national GHG reporting to the United Nations Framework Convention on Climate Change assumes nitrogen (N) additions drive emissions during the growing season, but soil freezing and thawing during spring is also an important driver in cold climates. We show that bo… Show more

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Cited by 33 publications
(24 citation statements)
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“…In fact, the periods of snowmelt and soil thaw can be responsible for between 30 and 90% of annual N 2 O emissions (Daly et al 2022;Flesch et al 2018;Rochette et al 2008a;Wagner-Riddle et al 2017). However, because of these previous assumptions along with the difficulty of measuring emissions during the winter using static chambers, these emissions have only just started to be included in National GHG inventories (Del Grosso et al 2022).…”
Section: Introductionmentioning
confidence: 99%
“…In fact, the periods of snowmelt and soil thaw can be responsible for between 30 and 90% of annual N 2 O emissions (Daly et al 2022;Flesch et al 2018;Rochette et al 2008a;Wagner-Riddle et al 2017). However, because of these previous assumptions along with the difficulty of measuring emissions during the winter using static chambers, these emissions have only just started to be included in National GHG inventories (Del Grosso et al 2022).…”
Section: Introductionmentioning
confidence: 99%
“…Thessaly does not experience strong winter frost and severe soil freezing such that N2O freeze-thaw emissions as reported byWagner-Riddle et al, (2017) or delGrosso et al, (2022) do not play any role in the N budget.The N2O estimations related to livestock presented in the study ofSidiropoulos and Tsilingiridis, (2009) varied in a range of 0.74 to 4.33 kt Ν2Ο, with an average of 2.84 kt Ν2Ο depended on the average values of emission factors used (for the year 2005). The estimates were based on the emission factors of IPCC guidelines and the number of animal heads were derived from the data sets acquired from the Hellenic Statistical Authorities as in the current study.…”
mentioning
confidence: 78%
“…Total and average daily feed (ADFI) was recorded, and average daily gain (ADG) and the feed conversion ratio (FCR) were calculated as; 1 T1: name of treatment group in original study; RPGF: reduced protein diet in the grower and finisher stage; RPF: reduced protein diet in the finisher stage; T95: 95% of feed ingredients were of organic origin; T100: 100% of feed ingredients were of organic origin; T100-CF: 100% of feed ingredients of organic origin with 6% higher crude fiber content 2 T2: newly assigned name of treatment group based on the quantity of dietary crude protein and crude fiber 3 Energy content was the same (13.4 MJ) for both grower and finisher diet and for all experimental treatments 4 RP content for the study of Kasper et al [7] was averaged over four series 5 For the study of Bee et al [26], all treatment groups had approximately the same quantity of crude protein, but T100-CF had a higher crude fiber content, hence, the different treatment group (Control C) assigned to T100-CF.…”
Section: Animals and Data Setsmentioning
confidence: 99%
“…Compared to other crops, soybeans contain the highest amount of lysine, which is why soybean meal is often included in the feed in order to meet the lysine requirements of pigs, resulting in high dietary crude protein content in the feed (Wang et al, 2018). Consequently, there is increased excretion of excess nitrogen in feces and urine, which contributes significantly to environmental problems such as nitrate pollution (Notarnicola et al, 2017) and greenhouse gas emissions in the form of nitrous oxide when manure is applied to pastures and fields (Del Grosso et al, 2022). Besides pollution, the large-scale export of soybean from South America has caused massive deforestation in this region, loss of terrestrial biodiversity and deterioration of ecosystem services (Foley et al, 2005).…”
Section: Introductionmentioning
confidence: 99%
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