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Updates to the New Zealand Soil Classification and the New Zealand Soil Description Handbook

We are excited to announce that draft updates to our two core field standards for soils work are now available for review.

New Zealand Soil Classification

The New Zealand Soil Classification (NZSC) was last updated in 2010. The large tranche of new fieldwork completed during the S-Map Expansion Programme has led to several new subgroups being identified. Additionally, some changes are proposed around classifying Anthropic Soils, making the classification more useful in human-modified environments. Lastly, an effort has been made to explain terminology more clearly and consistently.

New Zealand Soil Description Handbook

The New Zealand Soil Description Handbook was last updated in 1995. The draft revision offers a substantial rewrite to modernise the text and make sure it can support the National Soil Data Repository, which relies on the Handbook to guide the database’s structure. At the same time, an effort has been made to keep the standard compatible with the NZSC, other New Zealand land and vegetation survey standards, and international soil description standards.

The new drafts are being hosted on GitHub, which offers open discussion spaces and lets us simultaneously generate the documents in multiple formats – as a website, a Word document, and an ePub for the Kindle fans. We recognise that GitHub might not suit all reviewers, so we welcome comments made using track changes in the Word versions.

Review the standards and provide feedback

We’re extremely keen to hear from the soils community.

If you work with or adjacent to soils and soils data, please consider participating! Feedback on both documents should be submitted either via their respective GitHub sites or directly to SoilStandards@landcareresearch.co.nz.

Deadline for comment: Wednesday, 30 April 2025.

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