# 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 IV: General background information

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

The following plot and tree parameters must be assessed on Level I points:
for each plot:
descriptive code,
country,
date of observation,
observation point number,
actual latitude and longitude coordinates,
availability of water to principal species,
humus type,
altitude,
orientation,
stand data,
mean age of dominant storey,
soil data,
soil unit,
additional plot information specific for the current year (operations, events),
for each tree in the plot:
plot number,
sample tree data:
tree number,
tree species,
defoliation,
discoloration,
damage due to easily identifiable causes (insect, fungi, abiotic agents…),
identification of damage type,
observations on the tree in the plot.
The following plot and tree information must be collected on Level II plots:
country,
plot number,
date of assessment
number of trees
tree species
orientation,
information on removals and mortality,
exposure,
social class,
crown shading,
visibility.

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