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Inventory reports

The National Forest Inventory provides a record of the size and distribution of forests and woodlands in Great Britain and information on key forest attributes. This information, together with the Forestry Commission growth and yield models, is used to provide reports of forest metrics such as standing volume.

Results for standing coniferous volume (as at 31 March 2011) are available in the Standing timber volume for coniferous trees in Britain report (PDF) . This report provides the latest overall estimates of total timber volume standing in forests and woodland in Great Britain. In addition, it gives a breakdown of the volume by principal species, age class and size class, and by country and National Forest Inventory region.

Preliminary estimates for broadleaved species in British woodlands (as at 31 March 2011) are available in the Preliminary estimates of quantities of broadleaved species in British woodlands, with special focus on ash (PDF) . This report provides the latest overall estimates of stocked area, total standing timber volume the number of trees in forests and woodland in Great Britain. In addition, it gives a breakdown of these quantities for principal broadleaf species groups, age classes and size classes, by country and National Forest Inventory region.

Following the discovery of Chalara fraxinea infections of ash trees in Britain, the NFI has conducted two studies on the health of ash and on the current incidence of the disease in the ash population within British woodlands. The reports of these studies are National Forest Inventory Interim Statistics on the Health of Ash Trees in Great Britain (PDF) and NFI survey of the incidence of Chalara fraxinea infection of ash (Fraxinus excelsior) in Great Britain (PDF). A Questions and Answers document on the NFI survey report of the incidence of Chalara fraxinea infection of ash in Great Britain (PDF) is also available.

Estimates of aspects of the biodiversity and social value of forests and woodland will be provided by the inventory.