DATAMAN: A global database of nitrous oxide and ammonia emission factors for excreta deposited by livestock and land‐applied manure

Beltrán, Ignacio; Weerden, Tony J. van der; Alfaro, Marta; Amon, Barbara; Klein, Cecile A. M. de; Grace, Peter R.; Hafner, Sasha D.; Hassouna, Mnasser; Hutchings, Nicholas J.; Król, Dominika; Leytem, April B.; Noble, Alasdair; Salazar, Francisco; Thorman, R. E.; Velthof, G.L.

doi:10.1002/jeq2.20186

Cited by 22 publications

(23 citation statements)

References 25 publications

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“…Due to the skewed nature of the NH 3 and N 2 O EF data and the presence of negative values (Beltran et al. 2021), a cube root transformation was applied prior to statistical analysis (Albanito et al., 2017). We fitted all treatment means and replicate data as :replicates”; hence, all means were treated as a single replicate.…”

Section: Methodsmentioning

confidence: 99%

“…The database includes observations made from N application field trials where the length of experiments was at least 1 d for NH 3 EF values and 14 d for N 2 O EF values, as per the criteria established for the development of the database (Beltran et al., 2021). To determine whether the length of experimentation influenced NH 3 EF, data were evaluated using pairwise comparison according to experimental duration for both cattle and swine slurry with data divided into six experiment durations: 1–3, 3–7, 7–14, and >14 d. Our analysis showed length of experiment had a minimal influence on cattle NH 3 EF values and no significant influence on swine EF values (Supplemental File S2).…”

Section: Methodsmentioning

confidence: 99%

“…For N 2 O, recent data analysis studies have used a minimum experimental duration of 30 continuous days after N application as a threshold for accepting data (IPCC, 2019; López‐Aizpún et al., 2020). The criterion used for accepting N 2 O data into DATAMAN was shorter (14 d duration) but excluded studies where there was evidence of N 2 O emissions and soil mineral N concentration from the N treatment not returning to background levels (Beltran et al., 2021). In the current study, we analyzed the effect of experiment duration for each manure category, with data divided into six experiment durations: <30, 30–60, 60–120, 120–240, 240–360, and >360 d. We found that length of experiment had a minor influence on EF for cattle and swine manures, with no consistent pattern of increasing EF value with increasing duration (Supplemental File S3).…”

Section: Methodsmentioning

confidence: 99%

“…Data were also extracted from published studies, reports, and national datasets from 25 countries. The combined dataset was divided into temperate and tropical wet and dry climates (Beltran et al., 2021) based on the IPCC climate zones (Figure 3A.5.1 in Chapter 3; IPCC, 2019). The distinction between the wet and dry in the tropics was based on 1,000 mm of precipitation (>1,000 mm equating with a wet/moist climate).…”

Section: Methodsmentioning

confidence: 99%

“…Before determining EF values for climate zones and N source categories, data within the DATAMAN database (Beltran et al, 2021) were screened for their suitability for inclusion.…”

Section: Assessment Of Data Suitabilitymentioning

confidence: 99%

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Ammonia and nitrous oxide emission factors for excreta deposited by livestock and land‐applied manure

et al. 2021

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Manure application to land and deposition of urine and dung by grazing animals are major sources of ammonia (NH3) and nitrous oxide (N2O) emissions. Using data on NH3 and N2O emissions following land‐applied manures and excreta deposited during grazing, emission factors (EFs) disaggregated by climate zone were developed, and the effects of mitigation strategies were evaluated. The NH3 data represent emissions from cattle and swine manures in temperate wet climates, and the N2O data include cattle, sheep, and swine manure emissions in temperate wet/dry and tropical wet/dry climates. The NH3 EFs for broadcast cattle solid manure and slurry were 0.03 and 0.24 kg NH3–N kg–1 total N (TN), respectively, whereas the NH3 EF of broadcast swine slurry was 0.29. Emissions from both cattle and swine slurry were reduced between 46 and 62% with low‐emissions application methods. Land application of cattle and swine manure in wet climates had EFs of 0.005 and 0.011 kg N2O–N kg–1 TN, respectively, whereas in dry climates the EF for cattle manure was 0.0031. The N2O EFs for cattle urine and dung in wet climates were 0.0095 and 0.002 kg N2O–N kg–1 TN, respectively, which were three times greater than for dry climates. The N2O EFs for sheep urine and dung in wet climates were 0.0043 and 0.0005, respectively. The use of nitrification inhibitors reduced emissions in swine manure, cattle urine/dung, and sheep urine by 45–63%. These enhanced EFs can improve national inventories; however, more data from poorly represented regions (e.g., Asia, Africa, South America) are needed.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…Before determining EF values for climate zones and N source categories, data within the DATAMAN database (Beltran et al, 2021) were screened for their suitability for inclusion.…”

Section: Assessment Of Data Suitabilitymentioning

confidence: 99%

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Ammonia and nitrous oxide emission factors for excreta deposited by livestock and land‐applied manure

et al. 2021

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DATAMAN: A global database of methane, nitrous oxide, and ammonia emission factors for livestock housing and outdoor storage of manure

et al. 2022

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Livestock manure management systems can be significant sources of nitrous oxide (N2O), methane (CH4), and ammonia (NH3) emissions. Many studies have been conducted to improve our understanding of the emission processes and to identify influential variables in order to develop mitigation techniques adapted to each manure management step (animal housing, outdoor storage, and manure spreading to land). The international project DATAMAN (http://www.dataman.co.nz) aims to develop a global database on greenhouse gases (N2O, CH4) and NH3 emissions from the manure management chain to refine emission factors (EFs) for national greenhouse gas and NH3 inventories. This paper describes the housing and outdoor storage components of this database. Relevant information for different animal categories, manure types, livestock buildings, outdoor storage, and climatic conditions was collated from published peer reviewed research, conference papers, and existing databases published between 1995 and 2021. In the housing database, 2024 EFs were collated (63% for NH3, 19.5% for CH4, and 17.5% for N2O). The storage database contains 654 NH3 EFs from 16 countries, 243 CH4 EFs from 13 countries, and 421 N2O EFs from 17 countries. Across all gases, dairy cattle and swine production in temperate climate zones are the most represented animal and climate categories. As for the housing database, the number of EFs for the tropical climate zone is under‐represented. The DATAMAN database can be used for the refinement of national inventories and better assessment of the cost‐effectiveness of a range of mitigation strategies.

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N2O emission factors for cattle urine: effect of patch characteristics and environmental drivers

Barczyk

Kuntu-Blankson

Calanca

et al. 2023

Nutr Cycl Agroecosyst

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Urine patches from grazing cattle are hotspots of nitrous oxide (N2O) emissions. The default IPCC emission factor for urine patches (EFurine) is 0.77% for wet climates and 0.32% for dry climates. However, literature reports a considerable range of cattle urine EF values and urine characteristics used in experimental studies, revealing contrary results on the effects of urine patch characteristics and seasonal pattern. Therefore, we examined N2O emissions and corresponding EFurine values in relation to urine patch characteristics (urine N concentration, urine volume, patch area, urine composition) and environmental drivers (precipitation, water filled pore space, soil temperature). Ten artificial urine application experiments were performed from July 2020 to June 2022 on a pasture located in Eastern Switzerland. Urine N concentration, patch area, volume and urine N composition showed no significant effects on the EFurine value (p > 0.05). EFurine varied, however, strongly over time (0.17–2.05%). A large part of the variation could be predicted either by cumulative precipitation 20 days after urine application using a second order polynomial model (Adj. R2 = 0.60) or average WFPS 30 days after urine application using a linear model (Adj. R2 = 0.45). The derived precipitation model was used to simulate EFurine weekly over the last 20 years showing no significant differences between the seasons of a year. The resulting overall average EFurine was 0.67%. More field studies are needed across sites/regions differing in climate and soil properties to implement a country-specific EF3 for Switzerland and to improve the quantification of N2O emissions at the national scales.

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DATAMAN: A global database of nitrous oxide and ammonia emission factors for excreta deposited by livestock and land‐applied manure

Cited by 22 publications

References 25 publications

Ammonia and nitrous oxide emission factors for excreta deposited by livestock and land‐applied manure

Ammonia and nitrous oxide emission factors for excreta deposited by livestock and land‐applied manure

DATAMAN: A global database of methane, nitrous oxide, and ammonia emission factors for livestock housing and outdoor storage of manure

N2O emission factors for cattle urine: effect of patch characteristics and environmental drivers

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