Zastosowanie stratyfikacji w inwentaryzacji lasów różnowiekowych

The paper presents a posteriori stratification method which was used in inventorying uneven−aged stands in an area of 727.70 hectares in the Forest Experimental Station in Krynica. The average growing stock amounting to 291 m3·ha−1 was calculated with the error of 1.6%. Volume increment at the level of 9.39 m3·ha−1 per year was calculated with a similar accuracy as the growing stock. The loss volume of 5.33 m3·ha−1 and ingrowth volume 0.73 m3·ha−1 per year was determined with the error slightly above 5%.