Division II.1 Date of sampling

Deciduous species and larch: sampling shall be done when the new leaves are fully developed, and before the very beginning of the autumnal yellowing and senescence.

Evergreen species: sampling shall be done during the dormancy period. Member States are requested to define for each region, and inside each region for plains and mountains, the most convenient period for the sampling and analysis of the various species, and to keep to this period.

The foliage inventory shall be carried out for deciduous species and larch in summer 2005 and for evergreen species in winter 2005/2006. The inventory shall be repeated on each individual plot in a two years interval.