Last updated on 29 Aug 2019 09:29 (cf. Authors)
NFR-Code | Name of Category | Method | AD | EF | Key Category 1 | State of reporting |
---|---|---|---|---|---|---|
3.D | Agricultural Soils | |||||
consisting of / including source categories | ||||||
3.D.a.1 | Inorganic N-fertilizers (includes also urea application) | T2 (NH3), T1 (for NOx) | NS,RS | D (NH3), D (NOx) | L & T: NOx, NH3 | |
3.D.a.2.a | Animal manure applied to soils | T2, T3 (NH3), T1 (for NOx) | M | CS (NH3), D (NOx) | L & T: NOx, NH3 | |
3.D.a.2.b | Sewage sludge applied to soils | T1 (for NH3,NOx) | NS, RS | D (NH3), D (NOx) | no key category | |
3.D.a.2.c | Other organic fertilisers applied to soils (including compost) | T2 (for NOx, NH3) | M | CS | L & T: NH3 | |
3.D.a.3 | Urine and dung deposited by grazing animals | T1 (for NH3, NOx) | NS,RS | D | no key category | |
3.D.c | Farm-level agricultural operations including storage, handling and transport of agricultural products | T1 (for TSP, PM10, PM2.5,) | NS, RS | D | L & T: TSP, PM10 | |
3.D.d | Off-farm storage, handling and transport of bulk agricultural products | NA & for Black Carbon, NR | ||||
3.D.e | Cultivated crops | T2 (NMVOC) | NS, RS | D | no key category | |
3.D.f | Agriculture other including use of pesticides | T2 (HCB) | NS | D | L & T: HCB |
Country specifics
NH3 and NOx
In 2017, the category of agricultural soils emitted 364.3 kt NH3 or 56.9 % of the total agricultural NH3 emissions in Germany (639.8 kt NH3). The main contributions to the total NH3 emissions from agricultural soils are the application of manure (3.D.a.2.a), with 200.6 kt (55.1 %) and the application of inorganic N-fertilizers (3.D.a.1) with 94.2 kt (25.9 %).
Application of sewage sludge (3.D.a.2.b) contributes 0.7 % or 2.5 kt NH3.
The application of residues from the digestion of energy crops (3.D.a.2.c) leads to 58.3 kt NH3 or 16.0 %. N excretions on pastures (3.D.a.3) have a share of 8.7 kt NH3 or 2.4 %.
NH3 emissions from application of residues from the digestion of energy crops are excluded from emission accounting by adjustment as they are not considered in the NEC and Gothenburg commitments (see Chapter 11 - Adjustments and Emissions Reduction Commitments).
In 2017, agricultural soils were the source of 98.6 % (124.1 kt) of the total of NOx emissions in the agricultural category (125.8 kt). The NOx emissions from agricultural soils are mostly due to application of inorganic fertilizer (3.D.a.1) (52.7 %) and manure (3.D.a.2.a) (32.5 %). Application of residues from digested energy crops (3.D.a.2.c) contributes 9.7 % to agricultural soil emissions, 4.5 % are due to excretions on pastures (3.D.a.3). Emissions from application of sewage sludge (3.D.a.2.b)) contribute 0.6 %.
All NOx emissions from the agricultural category are excluded from emission accounting by adjustment as they are not considered in the NEC commitments (see Chapter 11 - Adjustments and Emissions Reduction Commitments).
NMVOC
In 2017, the category of agricultural soils contributed 9.7 kt NMVOC or 4.8 % to the total agricultural NMVOC emissions in Germany. The only emission source was cultivated crops (3.D.e). All NMVOC emissions from the agricultural category are excluded from emission accounting by adjustment as they are not considered in the NEC commitments.
TSP, PM10 & PM2.5
In 2017, agricultural soils contributed, respectively, 28.1 % (17.4 kt), 56.5 % (17.4 kt) and 14.7 % (0.7 kt) to the total agricultural TSP, PM10 and PM2.5 emissions (61.9 kt, 30.8 kt, 4.6 kt, respectively). The emissions are reported in category 3.D.c (Farm-level agricultural operations including storage, handling and transport of agricultural products).
3.D.a.1 - Inorganic N-fertilizers
The calculation of NH3 and NOx (NO) emissions from the application of inorganic fertilizers is described in Rösemann et al. (2019), Chapter 11.1, [1].
Activity Data
German statistics report the amount of fertilizers sold. Assuming that the change of fertilizers stocked is small compared with the amount of fertilizers sold, the amount of fertilizer sold is taken to be the amount of fertilizer applied.
Table 1: AD for the estimation of NH3 and NOx emissions from application of inorganic fertilizers
Methodology
NH3 emissions from the application of inorganic fertilizers are calculated using the Tier 2 approach according to EMEP (2016)-3D-14ff [10], distinguishing between various fertilizer types, see Table 2. For NOx, the Tier 1 approach described in EMEP (2016) [10]-3D-11ff is applied.
Emission factors
The emission factors for NH3 depend on fertilizer type, see EMEP (2016)-3D-15 [10]. Table 2 lists the EMEP emission factors for the fertilizers used in the inventory. In order to reflect average German conditions the emission factors for cool climate and a pH value lower than 7 was chosen.
Table 2: NH3-EF for inorganic fertilizersInorganic fertilizers, emission factors in kg NH3 per kg fertilizer N | ||
---|---|---|
Fertilizer type | EF | |
calcium ammonium nitrate | 0.008 | |
nitrogen solutions (UREA AN) | 0.098 | |
urea | 0.155 | |
ammonium phosphates | 0.050 | |
other NK and NPK | 0.050 | |
other straight fertilizers | 0.010 |
For NOx, the simpler methodology by EMEP (2016)-3D-11ff [10] was used. The emission factor 0.040 from EMEP, 2016-3D, Table 3.1 has the units of kg N2O per kg fertilizer N and was derived from Stehfest and Bouwman (2006), [8] . The German inventory uses the emission factor 0.012 kg NO-N per kg N derived from Stehfest and Bouwman (2006). This is, rounded to five decimals, equivalent to an emission factor of 0.03943 kg NOx per kg fertilizer N (obtained by multiplying 0.012 kg NO-N per kg N with the molar weight ratio 46/14 for NO2 : NO). The inventory uses the unrounded emission factor.
Table 3: Emission factor for NOx emissions from fertilizer applicationEmission factor | kg NO-N per kg fertilizer N | kg NOx per kg fertilizer N |
---|---|---|
EFfert | 0.012 | 0.039 |
Trend discussion for Key Sources
will be added next submission.
Recalculations
The recalculation page of the IIR (https://iir-de.wikidot.com/recalculations) provides a brought overview of the recalculations of all source categories. More details about the agricultural recalculations can be found on the main agricultural page (https://iir-de.wikidot.com/3-agriculture). Further details about recalculations are described in Rösemann et al. (2019), Chapter 3.5.2.
Planned improvements
No improvements are planned at present.
3.D.a.2.a - Animal manure applied to soils
In this sub category Germany reports the NH3 and NOx (NO) emissions from application of manure (including application of anaerobically digested manure). For an overview see Rösemann et al. (2019), Chapter 11.2, [1].
Activity data
The calculation of the amount of N in manure applied is based on the N mass flow approach (see 3.B). It is the total of N excreted by animals in the housing and the N imported with bedding material minus N losses by emissions of N species from housing and storage. Hence, the amount of total N includes the N contained in anaerobically digested manures to be applied to the field.
The frequencies of application techniques and incorporation times as well as the underlying data sources are described in Rösemann et al. (2019), Chapter 3.4.3, [1]. The frequencies are provided e. g. in the NIR 2019 [11], Chapter 19.3.2.
Table 4: AD for the estimation of NOx emissions from application of manure
Methodology
NH3 emissions from manure application are calculated separately for each animal species in the mass flow approach by multiplying the respective TAN amount with NH3 emission factors for the various manure application techniques. For details see 3.B and Rösemann et al. (2019), Chapter 4 to 8 and 11.3, [1].
For NOx emissions from manure application the inventory calculates NO-N emissions (see Rösemann et al. (2019), Chapter 11.2, [1] that are subsequently converted into NOx emissions by multiplying with the molar weight ratio 46/14. The Tier 1 approach for the application of inorganic fertilizer as described in EMEP (2016)-3D-11ff [10] is used, as no specific methodology is available for manure application.
Emission factors
Table 5 shows the implied NH3 emission factors defined as the ratio of total NH3-N emission from manure application to the amount of N spread with manure.
Table 5: IEF for NH3–N from application of manure
For NOx the same emission factor as for the application of inorganic fertilizer was used (see Table 3).
Trend discussion for Key Sources
will be added next submission.
Recalculations
The recalculation page of the IIR (https://iir-de.wikidot.com/recalculations) provides a brought overview of the recalculations of all source categories. More details about the agricultural recalculations can be found on the main agricultural page (https://iir-de.wikidot.com/3-agriculture). Further details about recalculations are described in Rösemann et al. (2019), Chapter 3.5.2.
Planned improvements
No improvements are planned at present.
3.D.a.2.b – Sewage sludge applied to soils
The calculation of NH3 and NOx (NO) emissions from application of sewage sludge is described in Rösemann et al. (2019), Chapter 11.4, [1].
Activity data
N quantities from application of sewage sludge were calculated from data of the German Environment Agency and (since 2009) from data of the Federal Statistical Office (see Table 6). Hence, there was no need to use the “per capita” activity data as proposed by EMEP (2016)-3.D, Table 3-1 [10].
Table 6: AD for the estimation of NH3 and NOx emissions from application of sewage sludge
Methodology
A tier 1 methodology is used (EMEP, 2016, 3D, Chapter 3.3.1 [10]). NH3 and NOx emissions are calculated by multiplying the amounts of N in sewage sludge applied with the respective emission factors.
Emission factors
EMEP (2016)-3.D, Table 3-1 [10] provides Tier 1 emissions factors for NH3 and NOx emissions from application of sewage sludge. However, it must be noted that the units of the NH3 emission factor provided in EMEP (2016)-3.D, Table 3-1 [10] are incorrect. It must read 0.13 kg NH3 per kg N applied instead of 13 kg NH3 per capita, see EMEP (2016)-3.D, Appendix A1.2.2.1. The German inventory uses the equivalent emission factor in NH3-N units which is according to the derivation of the emission factor, described in the appendix of EMEP (2016)-3D, page 25-26, [10], 0.11 kg NH3-N per kg N applied.
For NOx the same emission factor like for the application of inorganic fertilizer was used (see Table 3).
Trend discussion for Key Sources
will be added next submission.
Recalculations
The recalculation page of the IIR (https://iir-de.wikidot.com/recalculations) provides a brought overview of the recalculations of all source categories. More details about the agricultural recalculations can be found on the main agricultural page (https://iir-de.wikidot.com/3-agriculture). Further details about recalculations are described in Rösemann et al. (2019), Chapter 3.5.2.
Planned improvements
No improvements are planned at present.
3.D.a.2.c - Other organic fertilizers applied to soils
This sub category describes Germany’s NH3 and NOx (NO) emissions from application of residues from digested energy crops. For details see Rösemann et al. (2019), Chapters 10.2 and 11.3 [1].
Activity data
Activity data is the amount of N in residues from anaerobic digestion of energy crops when leaving storage. This amount of N is the N contained in the energy crops when being fed into the digestion process minus the N losses by emissions of N species from the storage of the residues (see 3.I). N losses from pre-storage are negligible and there are no N losses from fermenter (see Rösemann et al., 2019, Chapter 10.2.1).
Table 7: AD for the estimation of NH3 and NOx emissions from application of residues from anaerobic digestion of energy crops
Methodology
The NH3 emissions are calculated the same way as the NH3 emissions from application of animal manure (3.D.a.2.a). The frequencies of application techniques and incorporation times as well as the underlying data sources are provided e. g. in the NIR 2019 [11], Chapter 19.3.2. The amounts of TAN in the residues applied are obtained from the calculations of emissions from the storage of the digested energy crops (3.I).
For NOx emissions from application of residues the Tier 1 approach for the application of inorganic fertilizer as described in EMEP (2016)-3D-11 [10] is used. The inventory calculates NO emissions that are subsequently converted into NOx emissions by multiplying with the molar weight ratio 46/30.
Emission factors
For NH3 the emission factors for untreated cattle slurry were adopted, see Rösemann et al. (2019), Chapter 10.2, [1]. As the NOx method for fertilizer application is used fur the calculation of NOx emissions from the application of residues, the emission factor for fertilizer application was used (see Rösemann et al., 2019, Chapter 11.1 [1])
Table 8 shows the implied emission factors for NH3 emissions from application of residues from digested energy crops.
Table 8: IEF for NH3-N
Trend discussion for Key Sources
will be added next submission.
Recalculations
The recalculation page of the IIR (https://iir-de.wikidot.com/recalculations) provides a brought overview of the recalculations of all source categories. More details about the agricultural recalculations can be found on the main agricultural page (https://iir-de.wikidot.com/3-agriculture). Further details about recalculations are described in Rösemann et al. (2019), Chapter 3.5.2.
Planned improvements
No improvements are planned at present.
3.D.a.3 - Urine and dung deposited by grazing animals
The calculation of NH3 and NOx (NO) emissions from N excretions on pasture is described in Rösemann et al. (2019), Chapter 11.5 [1].
Activity data
Activity data for NH3 emissions during grazing is the amount of TAN excreted on pasture while for NOx emissions it is the amount of N excreted on pasture. Table 9 shows the N excretions on pasture. The TAN excretions are derived by multiplying the N excretions with the relative TAN contents provided in 3.B, Table 2.
Table 9: N excretions on pasture
Methodology
NH3 emissions from grazing are calculated by multiplying the respective animal population (3.B, Table 1) with corresponding N excretions and relative TAN contents (3.B, Table 2) and the fraction of N excreted on pasture (Table 9). The result is multiplied with the animal specific emission factor (Table 10). NO emissions are calculated the same way with the exception that the emission factor is related to N excreted instead of TAN.
Emission Factors
The emission factors for NH3 are taken from EMEP (2016)-3B-29, Table 3.9 [10]. They relate to the amount of TAN excreted on pasture. Following the intention of EMEP, 2016-3D, Table 3.11 [10], the inventory uses for NOx the same emission factor as for the application of inorganic fertilizer (see Table 3). In order to obtain NOx emissions (as NO2) the NO-N emission factor of 0.12 kg NO-N per kg N excreted is multiplied by 46/14.
Table 10: Emission factors for emissions of NH3 and NO from grazingEmission factors | |
---|---|
Dairy cows | 0.10 kg NH3-N per kg TAN excreted |
Other cattle | 0.06 kg NH3-N per kg TAN excreted |
Horses | 0.35 kg NH3-N per kg TAN excreted |
Sheep, goats | 0.09 kg NH3-N per kg TAN excreted |
All animals | 0.012 kg NO-N per kg N excreted |
Recalculations
The recalculation page of the IIR (https://iir-de.wikidot.com/recalculations) provides a brought overview of the recalculations of all source categories. More details about the agricultural recalculations can be found on the main agricultural page (https://iir-de.wikidot.com/3-agriculture). Further details about recalculations are described in Rösemann et al. (2019), Chapter 3.5.2.
Planned improvements
No improvements are planned at present.
3.D.c - Farm-level agricultural operations including storage, handling and transport of agricultural products
In this category Germany reports TSP, PM10 and PM2.5 emissions from crop production according to EMEP (2016)-3D-11 [10]. For details see Rösemann et al. (2019), Chapter 11.13 [1].
Activity data
The activity data is the total area of arable and horticultural land. This data is provided by official statistics.
Table 11: AD for the estimation of TSP, PM10 and PM2.5 emissions from soils
Methodology
As the Tier 2 methodology described in EMEP (2016)-3D-17 [10] cannot be used due to lack of input data, the Tier 1 methodology described in EMEP(2016)-3D-11ff [10] is used.
Emission factors
Emission factors given in EMEP (2016)-3D-12 [10] are used. The Guidebook does not indicate whether EFs have considered the condensable component (with or without).
Table 12: Emission factors for PM emissions from agricultural soilsEmission factor | kg ha-1 |
---|---|
EFTSP | 1.56 |
EFPM10 | 1.56 |
EFPM2.5 | 0.06 |
Trend discussion for Key Sources
will be added next submission.
Recalculations
The recalculation page of the IIR (https://iir-de.wikidot.com/recalculations) provides a brought overview of the recalculations of all source categories. More details about the agricultural recalculations can be found on the main agricultural page (https://iir-de.wikidot.com/3-agriculture). Further details about recalculations are described in Rösemann et al. (2019), Chapter 3.5.2.
Planned improvements
No improvements are planned at present.
3.D.e - Cultivated crops
In this category Germany reports NMVOC emissions from crop production according to EMEP (2016)-3D-11 [10]. For details see Rösemann et al. (2019), Chapter 11.11, [1].
Activity data
The activity data is the total area of arable land and grassland. This data is provided by official statistics.
Table 13: AD for the estimation of NMVOC emissions from crop production
Methodology
In EMEP (2016)-3D-15ff [10] the methodology is described how the EMEP Tier 1 EF was estimated. This methodology was adopted to estimate German emissions. It is considered a Tier 2 methodology.
Emission Factors
The emission factors for wheat, rye, rape and grass (15°C) given in EMEP (2016)-3D-16, Table A3-3 [10] were used. For all grassland areas the grass (15°C) EF is used, for all other crops except rye and rape the EF of wheat is used. Table 14 shows the implied emission factors for NMVOC emissions from crop production. The implied emission factor is defined as ratio of the total NMVOC emissions from cultivated crops to the total area given by activity data.
Table 14: IEF for NMVOC emissions from crop production
Recalculations
The recalculation page of the IIR (https://iir-de.wikidot.com/recalculations) provides a brought overview of the recalculations of all source categories. More details about the agricultural recalculations can be found on the main agricultural page (https://iir-de.wikidot.com/3-agriculture). Further details about recalculations are described in Rösemann et al. (2019), Chapter 3.5.2.
Planned improvements
No improvements are planned at present.
Uncertainty
Details will be described in chapter 1.7.
3.d.f - Agriculture other including use of pesticides
(on separate page)