NFI Survey Manual for third cycle field samples

The NFI Survey Manual describes the assessments made during field data collection and the protocols used by the field surveyors in collecting the data. The NFI Survey Manual is a living document and contains steadily more explanations. New versions will appear on this page as they are created.

The NFI Survey Manual for the 3rd cycle of field data collection is now available from this page. Manuals for earlier cycles are provided below for the purpose of supporting NFI reports; manuals for the earlier cycles should not be used to support fieldwork in the 3rd cycle.

NFI Survey Manual – 3rd cycle field data collection

The 3rd cycle of field data collection started in December 2020 and is scheduled to be completed in 2025.

The NFI Survey Manual for 3rd cycle is available below as a PDF document.

National Forest Inventory of Great Britain Survey Manual: Third cycle

National Forest Inventory of Great Britain Survey Manual: Third cycle – Annex

NFI Survey Manual – 2nd cycle field data collection

The 2nd cycle of field data collection took place between 2016 and 2020. The NFI Survey Manual chapters are posted below.

Chapter 0 contains the contents for all chapters. Each chapter contains a contents page specific to that chapter.

NFI Survey Manual – 1st cycle field data collection

The 1st cycle of field data collection took place between 2010 and 2015.