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sector:agriculture:start [2022/12/14 11:03] – [Reasons for recalculations] doeringsector:agriculture:start [2024/12/13 10:20] (current) – [Visual overview] kotzulla
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 Emissions occurring in the agricultural sector in Germany derive from manure management (NFR 3.B), agricultural soils (NFR 3.D) and agriculture other (NFR 3.I). Emissions occurring in the agricultural sector in Germany derive from manure management (NFR 3.B), agricultural soils (NFR 3.D) and agriculture other (NFR 3.I).
-Germany does not report emissions in category field burning (NFR 3.F) (key note: NO), because burning of agricultural residues is prohibited by law (see Rösemann et al., 2023)((Rösemann C, Vos C, Haenel H-D, Dämmgen U, Döring U, Wulf S, Eurich-Menden B, Freibauer A, Döhler H, Steuer, B, Osterburg B, Fuß R (2023) Calculations of gaseous and particulate emissions from German agriculture 1990 – 2021 : Report on methods and data (RMD) Submission 2023. https://www.thuenen.de/de/fachinstitute/agrarklimaschutz/arbeitsbereiche/emissionsinventare)).+Germany does not report emissions in category field burning (NFR 3.F) (key note: NO), because burning of agricultural residues is prohibited by law (see Vos et al., 2024)((Vos C, Rösemann C, Haenel H-D, Dämmgen U, Döring U, Wulf S, Eurich-Menden B, Freibauer A, Döhler H, Steuer, B, Osterburg B, Fuß R (2024) Calculations of gaseous and particulate emissions from German agriculture 1990 – 2022 : Report on methods and data (RMD) Submission 2024. www.eminv-agriculture.de)).
  
 The pollutants reported are: The pollutants reported are:
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 No heavy metal emissions are reported. No heavy metal emissions are reported.
  
-In 2020 the agricultural sector emitted  482.2 Gg of NH<sub>3</sub>, 108.4 Gg of NO<sub>x</sub>,  290.6 Gg of NMVOC,  60.6 Gg of TSP, 33.3 Gg of PM<sub>10</sub> and 5.3 Gg of PM<sub>2.5</sub> and 0.56 kg HCB. The trend from 1990 onwards is shown in the graph below. The sharp decrease of emissions from 1990 to 1991 is due to a reduction of livestock population in the New Länder (former GDR) following the German reunification. The increase of NH<sub>3</sub> emissions since 2005 is mostly due to the expansion of anaerobic digestion of energy crops, especially the application of the digestion residues. This is a new emission source which also effects NO<sub>x</sub> emissions. The decrease of NH<sub>3</sub> emissions since 2015 is mostly due to a decline in the amounts of mineral fertilizer sold and stricter regulations concerning application of urea fertilizers. Further details concerning trends can be found in Rösemann et al., 2023, chapter “Emissions results submission 2023”.+The calculations for the present IIR 2024 were finished before the release of the EMEP (2023) guidebook. Therefore, methodological changes in the EMP (2023) guidebook were not considered for the present submission.
  
-As depicted in the diagram below, in 2021 XX % of Germany’s total NH<sub>3</sub> emissions derived from the agricultural sector, while nitric oxides reported as NO<sub>x</sub> contributed XX % and NMVOC XX % to the total NOx and NMVOC emissions of Germany. Regarding the emissions of PM<sub>2.5</sub>, PM<sub>10</sub> and TSP the agricultural sector contributed XX % (PM2.5), XX and XX %, respectively, to the national particle emissions. +In 2022 the agricultural sector emitted 469.3 Gg of NH<sub>3</sub>, 101.3 Gg of NO<sub>x</sub>, 287.1 Gg of NMVOC, 59.1 Gg of TSP, 33.1 Gg of PM<sub>10</sub> and 5.3 Gg of PM<sub>2.5</sub> and 0.65 kg HCB. The trend from 1990 onwards is shown in the graph below. The sharp decrease of emissions from 1990 to 1991 is due to a reduction of livestock population in the New Länder (former GDR) following the German reunification. The increase of NH<sub>3</sub> emissions since 2005 is mostly due to the expansion of anaerobic digestion of energy crops, especially the application of the digestion residues. This emission source also affects NO<sub>x</sub> emissions. The decrease of NH<sub>3</sub> emissions since 2015 is mostly due to a decline in the amounts of mineral fertilizer sold and stricter regulations concerning application of urea fertilizers, as well as declining livestock numbers Further details concerning trends can be found in Vos et al., 2024, chapter “Emissions results submission 2024”. 
-HCB emissions of pesticide use contributed XX % to the total German emissions.+
  
 +As depicted in the diagram below, in 2022 91.6 % of Germany’s total NH<sub>3</sub> emissions derived from the agricultural sector, while nitric oxides reported as NO<sub>x</sub> contributed 10.8 % and NMVOC 27.8 % to the total NO<sub>x</sub> and NMVOC emissions of Germany. Regarding the emissions of PM<sub>2.5</sub>, PM<sub>10</sub> and TSP the agricultural sector contributed 6.3 % (PM<sub>2.5</sub>), 18.0 % (PM<sub>10</sub>) and 17.9 % (TSP) to the national particle emissions. HCB emissions of pesticide use contributed 14.1 % to the total German emissions. 
  
 ====Mitigation measures==== ====Mitigation measures====
- +The agricultural inventory model can represent several abatement measures for emissions of NH<sub>3</sub> and particles. The measures comprise: 
-The agricultural inventory model can represent several abatement measures for emissions of NH<sub>3</sub> and particles. The measures comprise:+
  
   * changes in animal numbers and amount of applied fertilizers    * changes in animal numbers and amount of applied fertilizers 
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   * air scrubbing techniques: yearly updated data on frequencies of air scrubbing facilities and the removal efficiency are provided by KTBL (Kuratorium für Technik und Bauwesen in der Landwirtschaft / Association for Technology and Structures in Agriculture) and from the agricultural census 2020. The average removal efficiency of NH<sub>3</sub> is 80 % for swine and 70 % for poultry, while for TSP and PM<sub>10</sub> the rates are set to 90 % and for PM<sub>2.5</sub> to 70 % for both animal categories. For swine two types of air scrubbers are distinguished: first class systems that remove both NH<sub>3</sub> and particles, and second class systems that remove only particles reliably and have an ammonia removal efficiency of 20%.   * air scrubbing techniques: yearly updated data on frequencies of air scrubbing facilities and the removal efficiency are provided by KTBL (Kuratorium für Technik und Bauwesen in der Landwirtschaft / Association for Technology and Structures in Agriculture) and from the agricultural census 2020. The average removal efficiency of NH<sub>3</sub> is 80 % for swine and 70 % for poultry, while for TSP and PM<sub>10</sub> the rates are set to 90 % and for PM<sub>2.5</sub> to 70 % for both animal categories. For swine two types of air scrubbers are distinguished: first class systems that remove both NH<sub>3</sub> and particles, and second class systems that remove only particles reliably and have an ammonia removal efficiency of 20%.
  
-  * reduced raw protein content in feeding of fattening pigs: the german animal nutrition association (DVT, Deutscher Verband Tiernahrung e.V.) provides data on the raw protein content of fattening pig feed, therefore enabling the inventory to depict the changes in N-excretions over the time series. The time series is calibrated using data from official and representative surveys conducted by the Federal Statistical Office.+  * reduced raw protein content in feeding of fattening pigs: the German animal nutrition association (DVT, Deutscher Verband Tiernahrung e.V.) provides data on the raw protein content of fattening pig feed, therefore enabling the inventory to depict the changes in N-excretions over the time series. The time series is calibrated using data from official and representative surveys conducted by the Federal Statistical Office.
  
-  * reduced raw protein content in feeding and feed conversion rates of broilers: the German animal nutrition association (DVT, Deutscher Verband Tiernahrung e.V.) provides data on the raw protein content of fattening broiler feed, and feed conversion rates of broilers. This makes it possible to model the changes in N-excretions over the time series.+  * reduced raw protein content in feeding and feed conversion rates of broilers: the German animal nutrition association (DVT, Deutscher Verband Tiernahrung e.V.) provides data on the raw protein content of fattening broiler feed, and feed conversion rates of broilers. This makes it possible to model the changes in N-excretions over the timeseries.
  
   * low emission spreading techniques of manure: official agricultural censuses survey the distribution of different manure spreading techniques and how fast organic fertilizers are incorporated into the soil. Germany uses distinct emission factors for different methods, techniques and incorporation durations.   * low emission spreading techniques of manure: official agricultural censuses survey the distribution of different manure spreading techniques and how fast organic fertilizers are incorporated into the soil. Germany uses distinct emission factors for different methods, techniques and incorporation durations.
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   * covering of slurry storage: agricultural censuses survey the distribution of different slurry covers. Germany uses distinct emission factors for the different covers.    * covering of slurry storage: agricultural censuses survey the distribution of different slurry covers. Germany uses distinct emission factors for the different covers. 
  
-  * use of urease inhibitors: for urea fertilizer the German fertilizer ordinance prescribes the use of urease inhibitors or the direct incorporation into the soil from 2020 onwards.The NH3 emission factor for urea fertilizers is therefore reduced by 70% from 2020 onwards, according to Bittman et al. (2014, Table 15)((Bittman, S., Dedina, M., Howard C.M., Oenema, O., Sutton, M.A., (eds) (2014): Options for Ammonia Mitigation. Guidance from the UNECE task Force on Reactive Nitrogen. Centre for Ecology and Hydrology, Edinburgh, UK.)).+  * use of urease inhibitors: for urea fertilizer the German fertilizer ordinance prescribes the use of urease inhibitors or the direct incorporation into the soil from 2020 onwards. The NH<sub>3</sub> emission factor for urea fertilizers is therefore reduced by 70% from 2020 onwards for the direct incorporation, according to Bittman et al. (2014, Table 15)((Bittman, S., Dedina, M., Howard C.M., Oenema, O., Sutton, M.A., (eds) (2014): Options for Ammonia Mitigation. Guidance from the UNECE task Force on Reactive Nitrogen. Centre for Ecology and Hydrology, Edinburgh, UK)). For the use of urease inhibitors the NH<sub>3</sub> emission factor is reduced by 60% from 2020 onwards, see Vos et al. (2024), Chapter 5.2.1.2. 
 + 
 +For NO<sub>x</sub> and NMVOC no mitigation measures are included. 
  
  
-For NO<sub>x</sub> and NMVOC no mitigation measures are included. 
  
  
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 (see [[general:recalculations:start|Chapter 8.1 - Recalculations]]) (see [[general:recalculations:start|Chapter 8.1 - Recalculations]])
  
-The following list summarizes the most important reasons for recalculations. Recalculations result from improvements in input data and methodologies (for details see Rösemann et al. (2023), Chapter 1.3). +The following list summarizes the most important reasons for recalculations. Recalculations result from improvements in input data and methodologies (for details see Vos et al. (2024), Chapter 1.3). 
  
-1) The results used from the 2020 agricultural census on the proportions of husbandry, storage or application methods and grazing were assumed to be true for the year 2019 and not for the year 2020 as in Submission 2022. This changes the data obtained by interpolation for the different proportions slightly, in some cases as far back as the year 2000. +  - New animal categories: In the present submission emissions from rabbits, ostrich, deer and fur-animals are reported for the first time. 
 +  - Imported manure: Emissions from spreading manure that was imported from The Netherlands is reported for the first time in the present submission.  
 +  - Dairy cows: Milk yield and slaughter weights for 2021 have been slightly corrected in the official statistics.  
 +  - Heifers: 2021 slaughter weights have been slightly corrected in the official statistics.  
 +  - Male beef cattle: In some years, slaughter ages and slaughter weights have been updated in the HIT database.  
 +  - Numbers of laying hens, pullets and broilers were corrected in the years before 2013. The numbers are higher than in earlier submissions..  
 +  - Sows: For several federal states, the number of piglets per sow and year was corrected for the year 2021.  
 +  - Fattening pigs: for several federal states the growth rates, start weights and final weights for the year 2021 were corrected. For Saxony and Saxony-Anhalt (no more recent data available than 2016 or 2017) the corresponding data from the neighboring federal state of Thuringia was adopted instead of keeping the last known value as was previously the case.  
 +  - Broilers: Update of the national gross production of broiler meat in 2021.  
 +  - Laying hens and pullets: due to new weight data for laying hens for 2021, the starting and final weights of laying hens have been recalculated for the entire timeseries. Since the initial weight of the laying hens corresponds to the final weight of the pullets, this also has (small) effects on the energy requirements and excretion of the pullets. 
 +  - Application of inorganic fertilizers: The mitigating factor for urea emissions if applied with urease inhibitor (since the year 2020) was reduced from 70 % to 60 %. Correction of amounts applied in some years before 2008 due to a mistake in calculation of the mean value of the three years going into the moving average. 
 +  - Application of sewage sludge: Replacement of extrapolated activity data in 2021 with data from the Federal Statistical Office and corrections of activity data for  years after 2006. 
 +  - Anaerobic digestion: Update of activity data in all years due to new data about underlying substrate characteristics and storage data. This applies to both digested energy crops and digested animal manure. 
  
-2) Deep bedding systems: As of the submission at hand, it is assumed that the NH3 emissions from deep litter systems are fully covered by the housing emissions and that the emission factor for storage emissions is 0.  This was done because it can be assumed that in case of deep bedding systems manure will be spread immediately after removing it from the stable. This reduces the emissions from manure management while the emissions from application of manure (3.D.a.2.a) increases as more N is available for application. 
-3) Heifers: Minor changes in the nutrient content of some feed ingredients. 
  
-4) Suckler cows: modeling of the energy requirement and feed intake has been updated and adapted based on the dairy cow model. 
  
-5) Male cattle > 2 years: Update of weights from 1999 onwards.+===== Visual overview =====
  
-6) Sows: Update of the number of piglets per sow in 2019. +__Emission trends for main pollutants in //NFR 3 - Agriculture//:__ 
 +{{ :sector:iir_nfr3.png?nolink&direct&700 |NFR 3 emission trends per category }} 
 +{{ :sector:iir_nfr3_from_2005.png?nolink&direct&700 |NFR 3 emission trends per category, from 2005 }}
  
-7) Fattening pigs: New data on raw protein content, ash content and digestibility of feed from 1990 onwards.  +__Contribution of NFRs 1 to 6 to the National Totals, for 2022__ 
- +{{ :sector:mainpollutants_sharesnfrs_incl_transport.png?direct&direct&700 | Percental contributions of NFRs 1 to 6 to the National Totals}}
-8) Broilers: New data on raw protein content, ash content and digestibility of feed from 2000 onwards. Update of the national gross production of broiler meat in 2019. +
- +
-9) Turkeys: Update of input data (slaughter weight, weight gain and feed conversion coefficient) for the years 2017-2019. +
- +
-10) Geese: update (increase) of the amount of bedding material (straw) and update (increase) of N-excretions for the whole time series. +
- +
-11) Laying hens: Improved interpolation of start weights and final weights for the whole time series. +
-  +
-12) Pullets: Improved interpolation of start weights and final weights for the whole time series. +
- +
-13) Anaerobic digestion of animal manures: Update of activity data in all years. +
-  +
-14) Mineral fertilizers: : New weighting procedure for the latest year: 2020 weighted mean from 2019 (weight 1/3) and 2020 (weight 2/3)). +
- +
-15) Application of sewage sludge to soils: Update of activity data in 2018 and 2019. Minor corrections of activity data in one federal state for the whole time series. +
- +
-16) Anaerobic digestion of energy crops: Update of activity data in 2019. +
-  +
-17) Soils: Minor corrections of cultivated areas and yields in several years. +
- +
-18) Pesticides: Recalculations were made for the complete time series due to the changes and new information given by the BVL for the amount of domestic sales of the active substances Lindane (1990 – 1997), Chlorothalonil and Picloram (2019) and the maximum amount of HCB in the active substance Chlorothalonil of the FAO specification was used for the calculation in the period 2005 - 2017. +
- +
- +
- +
- +
-===== Visual overview ===== +
-__Chart showing emission trends for main pollutants in //NFR 3 - Agriculture//:__ +
-[{{:sector:iir_nfr3.png?nolink&direct&600|NFR 3 emission trends per category}}] +
-[{{:sector:iir_nfr3_from_2005.png?nolink&direct&600|NFR 3 emission trends per category, from 2005}}] +
-__Contribution of NFR categories to the emissions/Anteile der NFR-Kategorien an den Emissionen__ +
-[{{:sector:cats_pollutants_incl_transport.png?nolink&direct&600|Contribution of NFR categories to the emissions}}]+
  
 ===== Specific QA/QC procedures for the agriculture sector===== ===== Specific QA/QC procedures for the agriculture sector=====
  
-Numerous input data were checked for errors resulting from erroneous transfer between data sources and the tabular database used for emission calculations. +Numerous input data were checked for errors resulting from erroneous transfer between data sources and the tabular database used for emission calculations. The German IEFs and other data used for the emission calculations were compared with EMEP default values and data of other countries (see Vos et al., 2024). Changes of data and methodologies are documented in detail (see Vos et al. 2024, Chapter 1.3). 
-The German IEFs and other data used for the emission calculations were compared with EMEP default values and data of other countries (see Vos et al., 2022). +
-Changes of data and methodologies are documented in detail (see  Vos et al. 2022, Chapter 3.5.2).+
  
-A comprehensive review of the emission calculations was carried out by comparisons with the results of Submission 2021 and by plausibility checks.+A comprehensive review of the emission calculations was carried out by comparisons with the results of Submission 2023 and by plausibility checks. 
  
-Once emission calculations with the German inventory model Py-GAS-EM are completed for a specific submission, activity data (AD) and implied emission factors (IEFs) are transferred to the CSE database (Central System of Emissions) to be used to calculate the respective emissions within the CSE. These CSE emission results are then cross-checked with the emission results obtained by Py-GAS-EM.+Once emission calculations with the German inventory model Py-GAS-EM are completed for a specific submission, activity data (AD) and implied emission factors (IEFs) are transferred to the CSE database (Central System of Emissions) to be used to calculate the respective emissions within the CSE. These CSE emission results are then cross-checked with the emission results obtained by Py-GAS-EM. 
  
-Model data have been verified in the context of a project by external experts (Zsolt Lengyel, Verico SCE). Results show that input data are consistent with other data sources (Eurostat, Statistisches Bundesamt / Federal Statistical Office) and that the performed calculations are consistently and correctly applied in line with the methodological requirements.+Furthermore, in addition to UNFCCC, UNECE and NEC reviews, the Py-GAS-EM model is continuously validated by experts of KTBL (Kuratorium für Technik und Bauwesen in der Landwirtschaft, Association for Technology and Structures in Agriculture) and the EAGER group (European Agricultural Gaseous Emissions Inventory Researchers Network). 
  
-Furthermore, in addition to UNFCCC, UNECE and NEC reviews, the Py-GAS-EM model is continuously validated by experts of KTBL (Kuratorium für Technik und Bauwesen in der Landwirtschaft, Association for Technology and Structures in Agriculture) and the EAGER group (European Agricultural Gaseous Emissions Inventory Researchers Network).