# 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 II.2: Selection of sample trees

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

In principle all trees in the total plot shall be monitored. In the case that the plot has many trees (e.g. dense stands), a sub-plot may have been defined to be used for the tree assessment. In this case the trees in the sub-plot shall be monitored. The size of the sub-plot at the time of the inventory should be large enough to give reliable estimates for stand increment over the entire measurement period. The exact size of this sub-plot shall be determined and reported.
All trees with at least 5 cm diameter over bark shall be individually identifiable by numbering.

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Source: https://www.legislation.gov.uk/eur/2006/1737/annex/I/chapter/4/division/II/division/II.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2006-1737/annex-I/chapter-4/division-II/division-II.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.