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Home Beef New Zealand sheep and beef farms close to being carbon neutral
Catherina Cunnanehttps://www.thatsfarming.com/
Editor and general manager of That's Farming.
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New Zealand sheep and beef farms close to being carbon neutral

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New Zealand’s sheep and beef farms are already close to being carbon neutral, strengthening calls for the formal recognition of on-farm sequestration.

That is according to a new study, led by Dr Bradley Case at Auckland University of Technology (AUT), which estimates the woody vegetation on New Zealand sheep and beef farms is offsetting between 63% and 118% of their on-farm agricultural emissions.

If the mid-point in the report’s range is used, on average, the woody vegetation on sheep and beef farms is absorbing about 90% of these emissions.

Carbon neutral by 2050

Beef + Lamb New Zealand CEO, Sam McIvor, said absolute greenhouse gas emissions from New Zealand sheep and beef production have reduced by 30% since 1990.

“This research shows that of the remaining emissions, the vast majority are being offset by the trees on our farms and New Zealand sheep and beef farmers are well on the way to being carbon neutral by 2050.”

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The study reinforces the importance of farmers getting formal recognition for the sequestration happening on their farms, Mr McIvor, added.

“Currently, most vegetation on sheep and beef farms does not qualify for inclusion in the ETS because it does not meet the definition of a forest.”

“If farmers are to face a price for agricultural emissions, it’s only fair they get credit for their sequestration.”

“The focus to date on livestock’s climate change contribution has been on emissions, rather than on sequestration. But with any product it makes sense to consider the whole business – in this case, taking a whole of farm approach.”

Credit for sequestration

“The study should also reassure consumers that New Zealand beef and lamb is among the most sustainable in the world, and our farmers are making a significant contribution to addressing on-farm agricultural emissions.”

Dr Bradley Case, Senior Lecturer in GIS and Remote Sensing in the Applied Ecology Department, School of Science at AUT, said there is a strong case for farmers to get credit for the sequestration happening on their farms.

“This is an integral part of He Waka Eke Noa, the regulatory framework that industry and government are currently developing to manage agricultural emissions and recognise on-farm sequestration.

“This research not only builds understanding of the overall greenhouse gas contribution of the sheep and beef sector, but will help inform the development of policy, and further reinforce the outstanding biodiversity on sheep and beef farms.”

Build native vegetation and biodiversity

According to the AUT report, the woody vegetation is made up of 1.52 million hectares of native forest and 0.48 million hectares of exotic vegetation.

In addition to sequestering carbon, this vegetation delivers wider benefits for New Zealand’s biodiversity and freshwater ecosystems.

“The report identifies where sheep and beef farmers can focus on to continue to build the native vegetation and biodiversity on their farms,” said Dr Case.

“The regional maps in the research indicate where management is most needed to ensure mature/old-growth forests are managed to prevent them from becoming sources of atmospheric carbon.”

Importantly, the net carbon emissions estimation assumed a net-neutral rate for soil sequestration so the amount of sequestration happening could be even greater, he added.

“While there is fairly good information about soil carbon stocks, there is not good data about yearly changes in soil sequestration and the science on this is still in development.”

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