Statystyczna małopowierzchniowa metoda oceny zdrowotności drzew―Cześć Ⅱ. Przykład: oszacowanie stopnia uszkodzenia wybranych gatunków drzew na Ghełmowej Górze w Świętokrzyskim Parku Narodowym

摘要

The purpose of the paper was to verify the efficacy of the proposed tree health assessment method involving the assessment of the defoliation level and calculation of errors of this assessment for fir, beech, pine, larch and indigenous oak species growing on the Chehnowa Cora in the Swietokrzyski National Park. Standard errors and maximum total errors calculated at α=0.05 and α_z=0.0167 (jointly, three defoliation classes were analysed) did not exceed 5% and 13%, respectively. Application of the simple random sampling design allowed, in a simple manner, to improve assessment accuracy by way of additional sampling of the most endangered or valuable tree species.