Primary agriculture is responsible for about half of New Zealand’s gross greenhouse gas (GHG) emissions. This share is large relative to other OECD countries, due to the prevalence of livestock-based agriculture and the large share of renewable sources in the electricity mix. Most agricultural emissions are in the form of methane from dairy, sheep, and beef cattle.
In its 2021 Nationally Determined Contribution (NDC) to the Paris Agreement, New Zealand committed to halve its national net GHG emissions by 2030 relative to gross 2005 levels. This economy-wide target covers, among others, agriculture and other land use sectors and corresponds to a 41% reduction on a multi-year emissions budget for 2021-30.
The Zero Carbon Amendment Act 2019 (Zero Carbon Act) sets separate long-term emission reduction targets for long-lived and short-lived GHG emissions, including a target for biogenic methane. In particular, the emissions reduction targets set out in the Zero Carbon Act aim to reduce all GHG emissions, except biogenic methane, to net zero by 2050; and reduce gross biogenic methane emissions to 10% below 2017 levels by 2030 and 24-47% by 2050.6
The New Zealand Emissions Trading Scheme (NZ ETS) is the main emissions pricing tool for the New Zealand economy and a key component of New Zealand’s climate change response. It currently requires companies in the agricultural supply chain (e.g. meat processors, dairy processors, nitrogen fertiliser manufacturers and importers) to report their agricultural emissions, although these companies are not required to pay for their emissions at this time.7 The NZ ETS also imposes a cost on emissions from transport fuels, electricity production, synthetic GHGs, waste and industrial processes, including in primary sectors. Eligible forests can be recognised for their carbon sequestration in the NZ ETS.
As part of the One Billion Trees programme aiming to double previous tree planting rates over the decade 2018-28, the One Billion Trees Fund was launched in November 2018. For the financial year ending 30 June 2023, the fund provided NZD 37.7 million (USD 23.1 million) for tree planting grants to landowners including farmers and NZD 83.2 million (USD 51.1 million) for partnership initiatives to help overcome the barriers to tree planting. The fund closed to new applications in June 2021, but the programme will continue until 2028 for grants that have already been approved.
The New Zealand Government researches and develops mitigation technologies to reduce agricultural GHG emissions. It does so primarily through the Centre for Climate Action on Agricultural Emissions (CCAAE, see section on Innovation for sustainable productivity growth below), as well as in co‑ordination with the member countries of the Global Research Alliance on Agricultural Greenhouse Gases (GRA).
The GRA, a network of 68 member countries and 29 partner organisations, was established in 2009. New Zealand hosts the Secretariat and GRA Special Representative, and co-chairs its Livestock Research Group. The GRA facilitates collaborative and evidence-based dialogue and knowledge sharing. GRA members collaborate on research, development and extension of technologies and practices to deliver more climate-resilient food systems without growing GHG emissions. New Zealand builds future capability and capacity through running training programmes and supporting GRA scholarship programmes in developing countries, including in South-East Asia and southern and eastern Africa. New Zealand also funds international collaborative efforts to accelerate global research in mitigating GHG emissions from agriculture, especially for pastoral livestock farming, and co-funds and participates in several international research calls designed to decrease agricultural emissions.8
New Zealand’s first National Climate Change Risk Assessment, published in 2020, sets out the priority and significant risks New Zealand faces from the impacts of climate change. The first National Adaptation Plan listing actions to address these risks was published in August 2022. The new government elected in October 2023 is considering priorities to deliver a strategic adaptation framework to ensure that New Zealand’s policy and other system settings provide for an enduring, efficient and affordable climate adaptation response while addressing wellbeing, fairness, transition, and specific Māori interests.