# Commission Regulation (EC) No 1737/2006 of 7 November 2006 laying down detailed rules for the implementation of Regulation (EC) No 2152/2003 of the European Parliament and of the Council concerning monitoring of forests and environmental interactions in the Community, Division (22): Social class

Extent: E+W+S+N.I.

1 pre-dominant (including free standing trees) trees with upper crown standing above the general level of the canopy
2 dominant — trees with crowns forming the general level of the canopy
3 co-dominant — trees extending into the canopy and receiving some light from above but shorter than 1 or 2
4 suppressed — trees with crowns below the general level of the canopy, receiving no direct light from above

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Source: https://www.legislation.gov.uk/eur/2006/1737/annex/I/chapter/15/division/4/division/22 (the official version)
Page: https://openlegislation.uk/eu-regulation-2006-1737/annex-I/chapter-15/division-4/division-22
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.