EJPAU 2017. Suchodolski P. , Idzik M. WOOD SUPPLY VARIABILITY<br>DOI:10.30825/5.ejpau.42.2017.20.4

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.

2017
Volume 20
Issue 4/volume20

Topic:

Economics

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Suchodolski P. , Idzik M. 2017. WOOD SUPPLY VARIABILITY
DOI:10.30825/5.ejpau.42.2017.20.4, EJPAU 20(4/volume20), #15.
Available Online: http://www.ejpau.media.pl/volume20/issue4/volume20/abs-15.html

WOOD SUPPLY VARIABILITY
DOI:10.30825/5.EJPAU.42.2017.20.4

Przemysław Suchodolski, Marcin Idzik
Faculty of Economic Sciences, Warsaw University of Life Sciences – SGGW, Poland

ABSTRACT

The study deals with the issue of wood supply variability in Poland illustrated with an example of the Płock Forest District. The aim of this paper was to identify and evaluate the supply variability of the selected wood assortment. According to the rules of time series decomposition based on the CENSUS II X-11 method, eight wood types were tested. Data came from the Płock Forest District collected from 2004 to 2014 in monthly intervals. Based on the conducted study, it was found that wood supplies in the Płock Forest District are not characterized by a clear share of systematic changes, trends and cycles. The results of this study have shown a significant impact of the seasonal and accidental fluctuations on timber prices. The trends and cycles were irrelevant for all 8 assortments. The dynamics of seasonal fluctuations were different depending on the assortment. Seasonal fluctuations had the biggest influence on wood supply of most of the tested assortments. The analysis has shown that there were also a lot of random fluctuations, which had a high amplitude of deviations.

Key words: National Forest Holding, trend, cycle, seasonal fluctuations, random fluctuations, multiannual management plan.

Przemysław Suchodolski
Faculty of Economic Sciences, Warsaw University of Life Sciences – SGGW, Poland
161 Nowoursynowska Str.
02-787 Warsaw
Poland
email: przemyslaw_suchodolski@sggw.pl

Marcin Idzik
Faculty of Economic Sciences, Warsaw University of Life Sciences – SGGW, Poland
161 Nowoursynowska Str.
02-787 Warsaw
Poland
email: marcin_idzik@sggw.pl

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