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3. Results

3.1 International goals and obligations for the Nordic countries

In this part of the project two databases were compiled. The first database focuses on policies that aim to reduce pollutants from the agricultural sector. The database aims to give an overview of policies that regulates and addresses emission of NH₃, Nr and CH4 in the Nordic countries. The database is shown in appendix 1 – Mapping policy overview. The study then compiled a database with commitments and obligations that the Nordic countries have committed to, this database is shown in appendix 2 – Mapping Nordic countries commitments and obligations.
The study identified 71 policies and around 100 commitments of obligations and goals that addresses emissions from the agricultural sector in the Nordic countries, which are shown in appendix 1 and 2. In this chapter examples of policies, commitments and obligations will be addressed, the full list of policies, commitments and obligations can be found in appendix 1 and 2.
Many of the policies that affect Sweden, Finland and Denmark come from the EU and are implemented through national laws and regulations. Norway and Iceland are not members of the EU but are members of the EFTA (the European Free Trade Association)
EFTA, 2024
. Through the EEA (European Economic Area) agreement, Norway and Iceland are bound by most of the EU environmental legislation with some exceptions
Norwegian Ministry of Foreign Affairs, na
. Agriculture and fisheries are not included in the EEA agreement, nor are the two EU nature conservations directives: the Birds Directive (2009/147/EC
Directive 2009/147/EC of the European Parliament and of the Council of 30 November 2009 on the conservation of wild birds.
) and the Habitats Directive (92/43/EEC
Council Directive 92/43/EEC of 21 May 1992 on the conservation of natural habitats and of wild fauna and flora.
).
Pollutants from agriculture are partly regulated on an international level through different policies and conventions, for example, polices from the United Nations and the UNECE Convention on Long-range transboundary air pollution (CLRTAP). There are also binding protocols and agreements that address the problem with these pollutants from the agricultural sector, such as the Gothenburg protocol. This study identified one research networking program, Nitrogen In Europe, that addresses pollutants from agriculture
LRTAP, 2024
.
The Paris agreement is an example of a commitment which all Nordic countries have committed to. The Paris agreement has set the obligation “[t]o hold the increase in the global average temperature to well below 2°C above pre-industrial levels and pursue efforts to limit the temperature increase to 1.5°C above pre-industrial levels” and “[a]chieving climate neutrality by 2050”. To be able to achieve the goals, a wide range of measures must be actioned within each country.
Many of the Nordic countries commitments are goals set by the EU. For example, EU’s initiative Farm to fork, includes the goal to reduce the use of fertilisers by 20 percent and reduce nutrient depletion by at least 50 percent by 2030
EFTA, 2021
. Other initiatives are CAP (Common Agricultural Policy) 2023-2027 which sets the goal to foster sustainable development and efficient management of natural resources such as water, soil, nutrients and air
European Commission, 2023
. This policy framework is built around ten key objectives linked to the EU goals for social, environmental, and economic sustainability in agriculture and rural areas, for example: climate change action, environmental care and to protect food and health quality. Each member state develops its own national CAP Strategic Plan with the ambition to address the common objectives. There are 28 national Strategic Plans approved by the European Commission. The CAP strategic plans cover the CAP-related and CAP-funded instruments that each Member State implements over 2023–2027 by different support schemes and policy instruments to contribute to the common goals. The Strategic Plans provides support, that aims at reducing emissions during different stages of the nutrient cycle and contributes to mitigate climate change by, for example, addressing emissions from mineral fertilisers and livestock
European Commission, 2022
. Furthermore, the CAP Strategic Plans incorporate Good Agricultural and Environmental Conditions (GAEC), which are a set of standards that farmers must follow to receive full funding from the CAP. GAEC standards are designed to promote sustainable farming practices and protect the environment, focusing on areas such as soil management, water quality, biodiversity, and climate resilience. For example, one standard addresses run off and pollution to rivers. To meet this, farmers receiving financial support to create buffer strips along water courses
European Commission, 2022
. Nineteen Member States has set a minimum width of 3 meters for the buffer strips in their CAP strategic Plans, while nine specify widths greater than 3 meters, such as 5 to 10 meters.
Other international goals the Nordic countries have committed to, are to improve the agricultural sector and lower the emissions. The Gothenburg protocol (annex II 2017) has for example set goals to reduce emissions from NOX and NH3. The National Emission Reduction Commitments Directive (2016/2284/EU) is another international legally binding commitment that sets national emission reduction commitments for Member States and the EU regarding NOx and NH3
European Union, 2016
.

3.1.1 Sweden

Sweden regulates pollutants from the agricultural sector on national, regional and local level. The Swedish Parliament issues laws and the government issues regulations
European Commission, 2024b
. As an EU member state, Sweden is obligated to implement EU directives in its national laws and regulations. A law or regulation, may mandate an authority a right to issue regulations on a subject or an issue that needs to be regulated in more detail. Regulations are legally binding. In Sweden, the responsible authorities that administrate the regulations addressing pollutants from agriculture are the Swedish board of Agriculture Agency, the Swedish Agency for Marine and Water Management and the Swedish Environmental Protection Agency.
The study found eight different policies, see appendix 1, that addresses emissions of pollutants from the agricultural sector. They work on different levels to address different social challenges and improve the environment in several different ecosystems. They cover pollutants such as CH4, N2O, NOX and NH3 from agriculture. For a full list of policies that address CH4, N2O, NOX and NH3 from agriculture, see appendix 1. There are also national environmental goals such as “no eutrophication” and “only natural acidification” that addresses pollutants from the agricultural sector, see appendix 1.
In Sweden, the environmental law is regulated through Miljöbalken (the Environmental Code), which harmonises the general rules and principles within the environmental area. The law is applicable to all activities that may harm the environment and the human health in any way. The law also contains the environmental principles and provisions providing for environmental quality norms as well as environmental impact assessments. The Environmental Code also regulates environmentally hazardous activities, as well as water operations subject to permit or notification requirements, and stipulates provisions regarding chemicals and waste. EU regulations and directives that acts within the environmental area are all implemented in the Environmental Code.
Greppa Näringen is a Swedish advisory program focused on reducing the environmental impact of agriculture, particularly concerning nutrient management
Greppa Näringen, 2024
. The program provides farmers with advice on how to optimise the use of fertilisers and other nutrients, with the aim of reducing nutrient runoff into water bodies, thereby minimising pollution and promoting sustainable agricultural practices. Greppa Näringen is a collaboration between the Swedish Agency for Agriculture, LRF (the Swedish Farmers Confederation), the county administration boards and several different advisory organisations in Sweden.
Swedish obligations and commitments to goals addressing pollutants from agriculture are presented in a database, see appendix 2. Below is a list of examples of Sweden’s commitments:
  • Reduce emissions of Green House Gases (GHG) by 63 percent to 2030 compared to 1990 and Reduce emissions of GHG by 75 percent to 2040 compared to 1990 (does not include emissions and uptake from land use) (Swedish climate policy)
  • Reduction of NO2 by 36 percent compared to 2005 (Gothenburg protocol annex II 2017)
  • Reduction of NOx by 66 percent and NH3 by 17 percent to 2030 (2016/2284/EU)
  • Reduce nutrient loss by at least 50 percent to 2030 (EU: Farm to fork)
  • Reduce health impacts (premature mortality due to particulate matter and ozone) of air pollution by 52 percent to 2030 compared to 2005 levels (A Clean Air Programme for Europe)

3.1.2 Denmark

Laws, statutory orders, and agreements work together to reduce the environmental impact of the agricultural sector, covering different aspects of the management of Nr, CH4, and NH3 in Denmark.
EU directives are implemented in the Danish laws and statutory orders. The Danish laws are issued by the Danish Parliament. Laws provides the overarching legal framework in areas such as environment. Statutory orders are issued by the government or ministries as a means to implement and specify the laws, and guidelines are issued as guidance on how laws and statutory orders should be applied, primarily directed at farmers and farmers consultants. Statutory orders and guidelines regulating pollutants from the agricultural sector is mainly issued by the Danish Agricultural Agency and the Danish Environmental Protection Agency.
The study found ten different policies that address emissions of pollutants from agriculture. For the full list of policies that address CH4, N2O, NOX and NH3 from agriculture see appendix 1.  The policies work on different levels to address different social challenges and to improve the environment in several different ecosystems. They cover pollutants such as CH4, N2O, NOX and NH3 from the agricultural sector. There are also national environmental goals. For example, Denmark’s CAP strategic plan sets the goal and aims to double the area for organic farming by 2030 by providing support to around 403 000 ha.
The Danish Climate Law includes measures to manage N emissions, particularly from agriculture, through improved practices and technologies that enhance efficiency and reduce environmental pollution. The Minister for Climate, Energy and Utilities annually prepares a climate program for the Danish Parliament. The program is integrated into Denmark's overall goal of achieving a 70 percent reduction in greenhouse gas emissions by 2030 and climate neutrality by 2050. There are also political initiatives such as Green Growth (Grøn Vækst) which aims at combining economic growth and development in agriculture and food production with environmental and climate sustainability
Grøn Vækst , 2024
. The initiative seeks to reduce environmental impact, particularly concerning N and phosphorus (P) emissions, while promoting innovation and competitiveness in the green sector.
Denmark has also developed and implemented an agreement on green restructuring of Danish agriculture, which sets goals to reduce greenhouse gases and discharge of N to the aquatic water.
The Danish government and parties from leading industry, agriculture, and environmental organisations presented in July 2024 the foundation for a long-term transition of Danish food and agriculture production, including land use. The agreement set out a revised framework for reducing carbon emissions ensuring compliance with the Danish climate emission reduction target in 2030. The agreement, which is not implemented yet, nor passed as a law in the Parliament, introduces a tax on carbon emissions from livestock. The carbon tax will be introduced in 2030 starting at DKK 300 pr. ton CO2e, increasing to 750 DKK pr. ton CO2e in 2035. However, a base deduction of 60 pct. will be added, which results in an efficient rate of DKK 120 pr. ton CO2e in 2030, increasing to DKK 300 pr. ton CO2e in 2035
The Ministry for Climate, Energy and Utilities, 2024
.
On a local level, there are statutory orders such as Environmental Control of Agriculture, which aims to reduce the environmental impact from the agriculture by imposing standards for manure storage and emission monitoring. Larger farms and high-emission activities are subject to stricter rules, including mandatory emission-reducing technologies like air filters or manure acidification systems.
Denmark has many obligations and commitments to goals addressing pollutants from agriculture. They are presented in a database, see appendix 2. Below is a list of examples of Denmark’s commitments:
  • Denmark is to be climate neutral by 2045 (Government platform 2015)
  • Reduction of N emissions to water from agriculture and forestry in Denmark by 10.800 tonne (Agreement regarding the green transition of Danish agriculture (Aftale om grøn omstilling af dansk landbrug))
  • Reduction of NO2 by 56 percent from 2005 levels (Gothenburg protocol annex II 2017)
  • Reduce health impacts (premature mortality due to particulate matter and ozone) of air pollution by 52 percent to 2030 compared to 2005 levels. (A Clean Air Programme for Europe)

3.1.3 Finland

In Finland, the legal framework operates under a hierarchical structure that incorporates laws, regulations, and guidelines. Laws are enacted by the Finnish Parliament and form the core of the legal framework. The EU directives are implemented in the Finnish laws and regulations. Laws set out the fundamental rules and principles governing various aspects of society for example environmental protection.
Regulations are issued by the government or relevant ministries to provide detailed rules for implementing laws. They address more specific issues and technicalities, ensuring that laws are applied uniformly.
The study found eight different policies that addresses emissions of pollutants from agriculture, they work on different levels to address different social challenges and improve the environment in several different ecosystems. They cover pollutants such as CH4, N2O, NOX and NH3 from the agricultural sector. For the full list of policies that address CH4, N2O, NOX and NH3 from agriculture, see appendix 1.  Finland also has national environmental goals. One of the goals stipulated in Finland’s climate policy states that Finland must be carbon neutral by 2035 at the latest.
Important directives that address various emissions from agriculture is Nitrates directive (91/676/EEG), the water framework directive (200/60/EG) and the EU legislation on fertiliser products ((EU) 2019/1009). The nitrates directive is important to limit the emissions of NH3 because it has rules covering manure houses, spreading manure and fertilisation restrictions regarding nitrogen as well as protective distances to water bodies. Through the Water Framework Directive, Finland has water management plans, in which necessary water management measures have been identified, that, among other objectives, aim to reduce emissions of N to water bodies.
The Finnish Climate Law
Finish parliament, 2022
contains provisions on the goals and framework for Finland's climate policy. Although the law does not directly regulate individual sectors like agriculture, it impacts farmers and agriculture through national climate policies and targets.
On a local level there are regulations such as Government regulation on environmental compensation
miljöersättning, 2023/78
. This regulation is a part of Finland's rural development program and offers financial support to farmers to implement environmentally friendly measures, including improved manure management and precision farming. The system encourages the use of environmental protection measures that reduce Nr emissions.
Finnish obligations and commitments to goals addressing pollutants from agriculture are presented in a database, see appendix 2. Below is a list of examples of Finland’s commitments:
  • Reduce GHG-emissions by 90–95 percent compared to 1990 to 2050 (Finland Climate policy)
  • Achieve good status in all bodies of surface and groundwater by 2027. (Good status is comprised of four assessments: Ecological status of surface waters, Chemical status of surface waters, Chemical status of groundwaters and Quantitative status of groundwaters) (Water framework agreement)
  • Reduction of NO2 by 20 percent from 2005 (Gothenburg protocol annex II 2017)
  • Reduce health impacts (premature mortality due to particulate matter and ozone) of air pollution by 52 percent to 2030 compared to 2005 (A Clean Air Programme for Europe)

3.1.4 Iceland

In Iceland, the legal and regulatory framework operates under a hierarchical system that combines laws, regulations, and directives. Iceland operates under its Constitution, which provides the foundation for all laws and legal systems. Laws are passed by the parliament. Laws serve as the primary legal instruments that regulate various aspects of the Icelandic society, including environmental protection. Regulations are issued by the government. Specific ministries may get the task to implement a certain law. Ministries or government agencies have the authority to issue regulations as per the laws enacted by the parliament. Many of the environmental laws issued by the EU has through the EEA mechanism, been implemented into the Icelandic legal system. Therefore, the EU has a large influence on the Icelandic environmental laws that aims to prevent pollutions and environmental quality.
The agricultural sector in Iceland is regulated through a couple of policies. For the full list of policies that address CH4, N2O, NOx and NH3 from agriculture, see appendix 1. The environmental impact assessment establishes a framework for evaluating the environmental impact and with a focus on sustainable development
Environmental Impact Assessment 106/2000
. The law states that projects or activities likely to have significant environmental effects must undergo an environmental impact assessment before they can proceed.
Iceland also has an Icelandic Climate Action Plan, which is a part of Iceland's climate goals. The 2020 Climate Action Plan addresses CH4 and N2O emissions from livestock, manure management and fertilisation use. The 2024 Climate Action Plan was published in June and is currently undergoing public consultation and address similar issues within the agricultural sector.
The Water Management Law regulates the protection of water bodies from nutrient pollution, such as N runoff from agriculture, which can lead to eutrophication of rivers, lakes, and coastal areas
Lög um stjórn vatnamála - Act No. 36/2011
.
Iceland is in the process of transposing into national law the international directive (EU) 2016/2284 which sets emission ceilings on certain atmospheric pollutants, including NOx and NH3.
The study found five policies that regulates pollutants from agricultural sector in Iceland. They work on different levels to address different social challenges and improve the environment in several different ecosystems. They cover pollutants such as CH4, N2O, NOx and NH3 from the agricultural sector.
Islandic obligations and commitments to goals addressing pollutants from agriculture are presented in a database, see appendix 2. Below is a list of examples of Iceland’s commitments:
  • Greenhouse gas emissions should be reduced by 40 percent by 2030 under the Paris Agreement, compared to 1990 level, in a joint effort with the EU (Icelandic climate policy).
  • Tackle eutrophication, through limiting inputs of nutrients and organic matter to levels that do not give rise to adverse effects on the marine environment (OSPAR, North-East Atlantic environment strategy).

3.1.5 Norway

Norway is part of the EEA, which means Norway must adopt certain EU regulations and directives in areas like environmental protection, however, common agriculture and fisheries policies are not covered by the EEA. EU directives set common standards, while Norwegian laws and regulations details how to implement these standards nationally. An example of a directive that is implemented in Norway through national legislation is the EU Nitrates Directive (91/676/EEC) to control N pollution from fertilisers.
Laws are passed by the Norwegian Parliament and form the primary legal framework. Regulations are more detailed rules issued by the government ministries to implement the provisions of laws. Regulations specify technical and administrative requirements for sectors like agriculture and environmental management.
Guidelines and directives are issued by ministries or agencies to explain how laws and regulations should be applied. The parliament can issue instructions through political guidelines. Norway’s local municipalities have some regulatory mandate, especially in environmental and land-use issues. Municipal councils can issue regulations that complement national laws and regulations, often focusing on local environmental management and land-use planning.
The study found twelve policies that regulates pollutants from the agricultural sector in Norway. For the full list of policies addressing CH4, N2O, NOx and NH3 from agriculture, see appendix 1.  The policies work on different levels to address different social challenges and to improve the environment in several different ecosystems. They cover pollutants from agriculture such as CH4, N2O, NOx and NH3. The national environmental and climate program aims to improve the environment and mitigate the climate change and have goals such as “[t]he ecosystems should have good status and deliver ecosystem services” and that “[p]ollutants should not harm health and environment”.
Pollutant from the agricultural sector is regulated in different policies. For example, the Pollution Law (Forureningsloven, 1981) aims to protect the external environment against pollution and to reduce the existing pollutions. The law aims to establish a legal framework for preventing and limiting pollution, including emissions to air, water, and soil, while promoting sustainable management of natural resources. This law plays a key role in controlling pollutants such as Nr and CH4, from the agricultural sector.
The Climate Law sets long-term goals for reducing greenhouse gas emissions. It aligns with Norway's commitment to becoming a low-emission society by 2050, which means that Norway should, by 2050, have reduced their greenhouse emissions by 90–95 percent compared to the reference year of 1990
Klimaloven LOV 2017-06-16-60
.
In June 2019, Norway’s two main agricultural organisations and the Government signed a letter of intent, setting out a climate target for the agricultural sector; to reduce emissions and enhance removals by a total of five million tonnes CO2eq over the period of 2021–2030
Government of Norway, 2019
. The letter of intent applies to all mitigation measures for agricultural activities whose effects can be accounted for in the sectors agriculture, transport, heating of buildings and LULUCF (with the exception of forestry) in Norway’s official greenhouse gas inventory. According to the letter of intent, responsibility for reducing emissions is shared between the agricultural sector and the Government. The agricultural sector is expected to achieve a substantial share of the emission reductions, for example through breeding programs, better fertiliser management and a switch to fossil-free energy use. The Government’s efforts to promote changes in consumption patterns may indirectly reduce greenhouse gas emissions that are accounted for in the agricultural sector. These efforts include initiatives to achieve the goal of reducing food waste by 50 percent by 2030 and to persuade people to follow the dietary recommendations from the Directorate of Health.
To follow up the 2019 letter of intent, the agricultural organisations drew up a climate action plan for the sector, published in 2020. This sets out how the agricultural sector intends to achieve the target of the letter of intent through action in defined focus areas, with the individual farm and what farmers can do themselves as a starting point.
Norway’s obligations and commitments to goals addressing pollutants from agriculture are presented in a database, see appendix 2. Below is a list of examples of Norway’s commitments:
  • Norway’s new target is to reduce emissions by at least 55 percent by 2030 compared to the reference year 1990 (The Climate Law).
  • Reduction of NO2 by 23 percent from 2005 levels (Gothenburg protocol annex II 2017)
  • No waterbodies should have bad status (National environmental program 2023–2026 (Mål i Nasjonalt miljøprogram 2023–2026) – Runoff to water

3.2 Measures to mitigate ammonia, methane and nitrogen emissions

The database of mitigation measures compiled in this project has resulted in a comprehensive number of measures that catalogues mitigation strategies within the agricultural sector across the Nordic countries. These measures are designed to mitigate negative impacts on climate and/​or air pollution, targeting emissions of NH3, Nr and CH4 across various agricultural practices and contexts. This chapter provides an overview of the database, highlighting identified integrated mitigation measures that address both climate and air pollution. The full database is available in appendix 3 – Mapping measures to mitigate ANM.
The database includes approximately 360 mitigation measures in total, though some measures appear multiple times in the database due to reporting from various sources or countries, see table 2 for a summary of the different categorisations used in this project. The measures are primarily reported from the Nordic countries, with additional contributions from European and international literature. About 70 of these measures are classified as integrated mitigation strategies, addressing both air and climate emissions simultaneously.
The classification, Measure Type, was applied to categorise the individual measures in the database into a single category if they represent the same type of mitigation action. In total, approximately 160 different measure types were identified in the literature. This approach enabled the grouping of measures with similar or the same characteristics and objectives, facilitating easier comparison between the literature sources and countries.
Approximately 30 measure types from the database were classified as integrated mitigation strategies, addressing both air and climate emissions simultaneously. These integrated measures are central for developing holistic approaches to emission reduction in agriculture. The key measure types identified in this project as the most effective in mitigating both types of emissions are presented in chapter 3.3.
Name
Description
Number identified in this project
Measure
Mitigation measures aimed at reducing NH3, Nr and CH4 emissions. These may appear multiple times due to reporting by different sources
360
Measure Type
Classification that groups similar or identical mitigation measures in the database, i.e. measures without duplicates
160
Measure Category
Classification that organises the measures in the database into broad categories based on agricultural practices
6
Integrated Measures
The “Measures” in the database addressing both air and climate emissions simultaneously
70
Integrated Measure Types
The identified “Measure Types” that are addressing both air and climate emissions simultaneously
30
Table 2. Summary of the categorisation used in this project for measures found in the literature.
For each measure in the literature, the primary targeted pollutants were identified, with N speciation used to more precisely assess effectiveness against different Nr species, as outlined in the methodology. In table 3, the summarised findings from the literature review are presented, showing the number of measures identified based on their effects on the emissions. A total of 152 measures were identified as having a positive effect on NH3 emissions, while an additional 31 were categorised as having an unknown effect due to unknown abatement efficiency/​quantification or lack of follow up studies. These measures generally show potential for positive impact, but may also have no effect or, in some cases, even a negative effect on the emissions. Similarly, 61 measures were found to reduce CH4 emissions, with 15 measures categorised as unknown. For N2O emissions, 99 measures were found to have positive effects, while 68 remain classified as unknown for similar reasons. Regarding NO3- leaching, 91 measures had a positive effect, and 36 were categorised as unknown. Additionally, 9 measures were identified as having a positive impact on N2 emissions, with 24 classified as unknown (although N₂ release does not directly cause pollution, it reduces the N use efficiency by Nr loss, requiring more inputs such as fertilisers). While some of the measures are less well-documented, they may still play a valuable role in emission reduction strategies, especially when adapted to specific local conditions. It is also worth mentioning that some of the measures were only evaluated based on their effects on CO2e and mainly have an impact on climate through carbon sequestration. The measures were quantified when literature was available, those are presented under chapter 3.4.
Additionally, it is important that potential trade-offs and synergies between different pollutants are considered. For example, there are 4, 12 and 29 measures in the database identified with potential negative effects on emissions of CH4, NH3, and N2O respectively. This emphasises the importance of carefully considering the full range of impacts when selecting mitigation strategies to ensure that reductions in one area do not lead to unintended increases in another.
 
Ammonia, NH3
Nitrogen oxide, NOX
Methane, CH4
Nitrous oxide, N2O
Nitrate, NO3-
Dinitrogen, N2
Positive
152
9
61
99
91
9
Unknown
31
20
15
68
36
24
Negative
12
6
4
29
3
8
Not effective
35
44
63
69
38
35
Table 3. The table summarises the number of measures identified in the literature, categorised based on their effects on emissions of CH4 and Nr species.

3.3 Assessment of effectiveness and size of selected measures

The measures identified in this study were arranged into measure categories, measure types, and individual measures. The linking of these groups, between this study and the GAINS model database, was possible to do on a ‘measure type’ level of aggregation. Out of the 360 identified individual measures, some 30 measure types were identified as integrated measures. Eleven out of these measures were identified as key integrated mitigation measure types by reviewing the combined result from ECLIPSE scenarios and the literature review. To account for measures that were identified in the literature review but not covered by any ECLIPSE scenario, a second review phase was carried out, focusing exclusively on the result of the literature review. As a result, 6 additional measures were identified as key integrated mitigation measure types (marked with a star in table 4). In total, 17 measure types were therefore identified. The 17 measure types along with their corresponding measure category and overall effect on the pollutants NH3, NOx, CH4 and N2O are presented in table 4.
Table 4. Key identified integrated mitigation measure types. Emission reductions associated with the measure type are indicated with ‘positive’. Measure types indicated by star are from the literature review and not part of the ECLIPSE model. 
Measure Type
Measure Category
Ammonia, NH3
Nitrogen oxide, NOx
Methane, CH4
Nitrous oxide, N2O
Biogas production
Energy/​​nutrient recovery and carbon sequestration
Positive
 
Positive
Positive
Improved productivity
Livestock production, housing and diet
Positive
 
Positive
Positive
Nitrification inhibitors
Manure storage and processing
Not effective
Positive
 
Positive
Precision farming
Crop production and crop rotation
Positive
 
 
Positive
Field application of manure and/​or fertilisers
Positive
Positive
 
Positive
Reduction of fertilisers
Crop production and crop rotation
Positive
 
Not effective
Positive
Field application of manure and/​or fertilisers
Positive
Unknown
Positive
Positive
Acidification of manure
Manure storage and processing
Positive
 
Positive
Unknown
Covered storage of manure/​slurry
Manure storage and processing
Positive
 
Positive
Unknown
Rapid incorporation of manure after application
Field application of manure and/or fertilisers
Positive
 
Not effective
Positive
Low protein diet
Livestock production, housing and diet
Positive
Not effective
 
Positive
Cooling of slurry/​manure
Manure storage and processing
Positive
 
Positive
Not effective
Slurry dilution for field application
Field application of manure and/​or fertilisers
Positive
 
Not effective
Positive
Agroforestry*
Land use and landscape management
Positive
 
Not effective
Positive
Increase land cover with perennial crops*
Land use and landscape management
Positive
 
Not effective
Positive
Increased grazing*
Land use and landscape management
Positive
 
Positive
Negative
Avoid soil compaction*
Crop production and crop rotation
Positive
 
Not effective
Positive
Fallow in crop rotation*
Crop production and crop rotation
Positive
 
Not effective
Positive
Biochar production*
Manure storage and processing
Positive
 
Unknown
Positive

3.4 Size of effects

In table 5, a quantification of potential effects of the prioritised measure-types in kiloton (kt) is presented. In contrast to other studies, the effects on emissions of CH4 and N2O are not expressed as CO2e, but as kt of the gas itself. The estimations are a sum of identified potentials for all Nordic countries separated over the four emissions NH3, NOx, CH4 and N2O. The first ten measure-types are estimated potentials from ECLIPSE scenarios for the sector and fuel-activity connected to the identified measure-type. For these measure-types the difference between a MTFR scenario and a CLE scenario are considered a potential reduction. For the six last measure-types, where the ECLIPSE scenarios do not enable a quantification, estimations are made based on the literature review. Where nothing else is noted, the potentials are in kt Nordic emission reduction potential year 2040, and all numbers are approximate estimates, affected by the future development of Nordic agricultural production. The measure-type biogas production has a potential to reduce CH4 with an annual reduction 9 kt for the Nordic countries combined, and it also has a potential of reducing NH3. As for all measures and measure types, the potential might vary between the Nordic countries dependent on local circumstances. The potential in reduction for the measure-type improved productivity is highest for CH4 with a potential of 23 kt/year while reducing emissions of NH3 by 4 kt. The measure type precision framing has potential in reducing NOx with 20 kt/year and at the same time the potential of reducing N2O by 11 kt/year. Similar double effects we observe on the measure-type reduction of fertilisers, but a quantification based on ECLIPSE was not possible. For reducing NH3, we see a potential in reducing the emissions by 45 kt/year for the measure type covered storage in combination with rapid incorporation of manure after application, a low protein diet, cooling the slurry/manure and slurry dilution for field application. These combinations also have the potential of reducing CH4 emissions. Agroforestry indicates a potential in reducing N2O (327 kt N/year) as well as a potential in reducing NH3 (52 kt N/Year). However, these two potentials are based on the assumption that trees are being planted of 15 percent of the agricultural area.
Table 5. Quantified estimate of the shortlisted measure types of agricultural emission reduction potential for all Nordic countries in 2040, including potential of measure combinations within a measure type. Red text indicate and increase in emission.
Measure Type
Ammonia, NH3
Nitrogen oxide, NOx
Methane, CH4
Nitrous oxide, N2O
Biogas production
Positive
 
around 9 kt
Positive
Improved productivity
around 4 kt
 
around 23 kt
 
Nitrification inhibitors
 
around 0.7 kt
 
around 0.7 kt
Precision farming
Positive
around 20 kt
 
around 11 kt
Reduction of fertilisers
Positive
Positive
 
Positive
Covered storage of manure/​slurry in combination with:
around 45 kt
 
Positive
 
  • Rapid incorporation of manure after application
 
 
 
Positive
  • Low protein diet
 
 
 
Positive
  • Cooling of slurry/​manure
 
 
Positive
 
  • Slurry dilution for field application
 
 
 
Positive
Agroforestry
Estimations based on trees on 15 percent of crop areas and an arable land use of 7.6 MHa in the Nordics with reductions for NH3 of 6.8 kg N/ha and for N2O 43 kg N / ha.
-52 kt N
 
 
-327 kt N
Increase land cover with perennial crops
Estimation based on a reduction of 461 kg CO2e/ha and a total arable land use of 7,6 MHa in the Nordic countries.
 
 
 
-13 kt
Increased grazing
Estimation based on numbers for Norway extrapolated to the whole Nordics, where Norway is assumed to represent 15 percent of grazing animals in the Nordics.
-5 kt
 
-3 kt
+0,15 kt
Avoid soil compaction
Estimation based on 30 – 60 percent reduction from CLE scenario of 17 kt N2O due to NPK fertilization.
 
 
 
5 – 10 kt
Fallow in crop rotation
Estimation based on fallow on 4 percent of the Nordic countries total of 7,6 MHa and a reduction of 3,5 kg N2O/ha.
Positive
 
 
-1 kt
Biochar production
Estimation based on a 60 percent reduction in NH3 for the CLE scenario on poultry litter.
-8 kt
 
 
 
As can be seen, our interpretation of the ECLIPSE scenarios suggests that the largest NH3 emission reduction potential is through an increased use of covered storage of manure and slurry, whilst biogas production has largest potential for CH4 emissions. As mentioned above, the potential is affected by the assumed future development of Nordic agricultural production, which might differ between national estimates and ECLIPSE scenario estimates. Overall, table 5 suggest that most of the synergy measure types relates to manure/​fertiliser application to soils. It is important to consider that the measures are being analysed on a Nordic level as local conditions can vary and affect the interpretation of the ECLIPSE model results.
The costs approximated per measure type are given in table 6 below. As is previously known, increased biogas production implies cost savings with the gas prices assumed in the cost calculations. Furthermore, most emission sources in the Nordic countries require joint solutions, so the costs for combinations of covered storage, low protein feed, cooling of slurry/​manure and application practices. Costs are not available for several measures.
Measure Type
Annual emission control cost
[million € per year]
Biogas production
-5 (cost saving)
Improved productivity
17
Nitrification inhibitors
n.a.
Precision farming
n.a.
Reduction of fertilisers
n.a.
Covered storage of manure/​slurry in combination with:
~280
  • Rapid incorporation of manure after application
 
  • Low protein diet
 
  • Cooling of slurry/​manure
 
  • Slurry dilution for field application
 
Agroforestry
n.a.
Increase land cover with perennial crops
n.a.
Increased grazing
n.a.
Avoid soil compaction
n.a.
Fallow in crop rotation
n.a.
Biochar production
n.a.
Table 6. Estimated costs for the prioritised measure-types.