NATIONAL FOREST INVENTORY WOODLAND ENGLAND 2020

Published by:
Forestry Commission
Last updated:
28 June 2022
Topic:
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Summary

The National Forest Inventory (NFI) woodland map covers all forest and woodland area over 0.5 hectare with a minimum of 20% canopy cover, or the potential to achieve it, and a minimum width of 20 metres. This includes areas of new planting, clearfell, windblow and restock. The woodland map excludes all 'tarmac' roads and active railways, and forest roads, rivers and powerlines where the gap in the woodland is greater than 20 meters wide.

All woodland (both urban and rural), regardless of ownership, is 0.5 hectare or greater in extent, with the exception of Assumed woodland or Low density areas that can be 0.1 hectare or greater in extent. Also, in the case of woodland areas that cross the countries borders, the minimum size restriction does not apply if the overall area complies with the minimum size.

Woodland less than 0.5 hectare in extent, with the expectation of the areas above, will not be described within the dataset but will be included in a separate sample survey of small woodland and tree features.

The woodland map is updated on an annual basis and the changes in the woodland boundaries use the Ordnance Survey MasterMap® (OSMM) as a reference where appropriated.

The changes in the canopy cover have been identified on:

• Sentinel 2 imagery taken during spring/summer 2019 and 2020 or colour aerial orthophotographic imagery available at the time of the assessment;

• New planting information for the financial year 2019/2020, from grant schemes and the sub-compartment database covering the estate of Forestry England;

Woodland areas, greater than 0.5 hectares, are classified as an interpreted forest type (IFT) from aerial photography and satellite imagery. Non-woodland areas, open areas greater than 0.5 hectare completely surrounded by woodland are described according to open area types.

IFT categories are Conifer, Broadleaved, Mixed mainly conifer, Mixed mainly broadleaved, Coppice, Coppice with standards, Shrub, Young trees, Felled, Ground prep, Cloud \ shadow, Uncertain, Low density, Assumed woodland, Failed, Windblow.

IOA categories are Open water, Grassland, Agricultural land, Urban, Road, River, Powerline, Quarry, Bare area, Windfarm, Other vegetation.

For further information regarding the interpreted forest types (IFT) and the interpreted open areas (IOA) please see NFI description of attributes available on

www.forestresearch.gov.uk

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Additional information

View additional metadata
Added to data.gov.uk
2022-06-27T14:30:28
Access contraints
No limitations
Harvest GUID
da547f12-82a5-41df-bfe3-8610c3d1fd60
Extent
Latitude: 56.099571807422784° to 49.748081779304435°
Longitude: -6.974272406255503° to 3.4192551408305305°
Spatial reference system
urn:ogc:def:crs:EPSG:27700
Dataset reference date
2022-04-30 (creation)
2022-04-30 (revision)
Frequency of update
annually
Responsible party
Forest Research (owner, pointOfContact, custodian)
ISO 19139 resource type
dataset
Metadata language
eng
Source Metadata
XML
HTML

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Licence information

Any maps produced using this data should contain the following Forestry Commission acknowledgement: “Contains, or is based on, information supplied by the Forestry Commission. © Crown copyright and database right 2022 Ordnance Survey [100021242]”.
I confirm that I have read, understood and agree to abide by the terms and conditions of the Open Government Licence 3.0 and agree to acknowledge the information provider as follows, “Contains Forestry Commission information licensed under the Open Government Licence v3.0".
http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/