Division II.4 Parameters and analysis

Litterfall assessment distinguishes between mandatory and optional parameters (See list below).

For chemical analysis the litterfall samples are dried to constant weight in an oven at maximum 80 °C, preferably at 65 °C. After this drying, the mass of 100 leaves or 1 000 needles is determined at 105 °C. Knowing the percentage of moisture in the sub samples, the whole amount of each fraction can be converted to dried mass at 80 °C. The samples dried at max 80 °C are grounded to a homogeneous powder. The chemical analysis of litter is similar to the foliar chemical analysis. The results of litterfall chemical analysis are reported to 80 °C just like the litterfall mass.