Metoda określania jednostkowych kosztów standardowych prac leśnych na podstawie grupowania nadleśnictw o zbliżonych warunkach przyrodniczoleśnych

Autorzy

• Janusz Kocel Instytut Badawczy Leśnictwa, Zakład Zarządzania Zasobami Leśnymi
  Sękocin Stary, ul. Braci Leśnej 3, 05-090 Raszyn
  Fax: +48 227200397, e-mail: jkocel@ibles.waw.pl

Abstrakt

The methodical ground for determining standard costs of forest operations was based on the assumption that in similar nature-forest conditions the costs of operations borne by forest districts should also be at similar level. All forest districts in Poland were combined into groups, uniform with regard to structure of forest site types, share of forest damages caused by industrial air pollution, structure of harvested wood assortments, and share of dominant tree species in tree stands. For grouping forest districts, the cluster analysis with distance sorting and observation analysis with a constant interval were used.

The arithmetic means of real costs, calculated excluding extreme values , were assumed to be standard unit costs. The method was verified on the basis of costs borne by the regional directorates of the State Forests as well as forest districts in 1999 and 2000.

Słowa kluczowe

• method of forest districts grouping
• standard unit costs
• real costs
• costs comparison