Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.
2004
Volume 7
Issue 1
Topic:
Forestry
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Barszcz A. , Michalec K. 2004. OPTIMALIZATION OF THE NUMBER AND SIZE OF SAMPLE PLOTS FOR ESTIMATION OF THE QUALITY STRUCTURE OF STANDING SPRUCE TIMBER, EJPAU 7(1), #01.
Available Online: http://www.ejpau.media.pl/volume7/issue1/forestry/abs-01.html

OPTIMALIZATION OF THE NUMBER AND SIZE OF SAMPLE PLOTS FOR ESTIMATION OF THE QUALITY STRUCTURE OF STANDING SPRUCE TIMBER

Anna Barszcz, Krzysztof Michalec

 

ABSTRACT



The present study concerns the determination of variability of spruce timber as a basis of optimalization of the number and size of sample plots. The plots might be used to estimate the quality structure of spruce timber for both scientific and practical purposes. Research was conducted at 6 one-hectare sample plots, divided into subplots, in the province of the Beskid »ywiecki Mts. in the Carpathian Region. The features under analysis showed considerable variability, particularly in the case of the least numerous classes and groups of timber. The analysed dependencies were described by means of expotential equations.

Key words: Norway spruce, timber quality, variability coefficients, number and size of sample plots.