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Because of the ever−changing nature of the environment, the limited availability of natural resources, and the increased number of people in the world, modifications in food production can be very important. In order to prevent irreversible damage occurring in the natural environment, food sources that are an alternative to pig meat, beef and poultry from industrial production are being sought. An...
The study objectives were to identify external sources of financing the nature and forest education and to analyze the level of their use in regional directorates of the State Forests (RDSF) in the years 2006−2016. In addition, we studied the relationship between the amount of external and internal financing. As a data source, we used reports on educational activities of the State Forests for the...
Celem pracy była ocena bieżącej efektywności zabiegów trzebieżowych wykonanych w drzewostanach sosnowych na terenie Nadleśnictwa Bogdaniec w latach 2009-2013. Badaniami objęto drzewostany sosnowe II i III klasy wieku, rosnące na Bśw, BMśw, LMśw i Lśw. Poddano analizie bezpośrednie koszty uzyskania i zrywki drewna pozyskanego w trzebieżach oraz uzyskane przychody z jego sprzedaży. Na podstawie relacji...
The article presents an economic evaluation of effectiveness of early thinnings in pine stands. The assessment was based on the relationship between the revenues from timber sales and treatments costs. Studies confirmed that the profitability of thinning depends on the quality of habitat, stand age and forest district. Effectiveness of thinning is rising with increasing habitat quality. Costs of thinning...
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