Diameter increment trend of the Austrian pine plantations in Raška [Serbia]
2009
Koprivica, M., Institute of Forestry, Belgrade (Serbia) | Matović, B., Institute of Forestry, Belgrade (Serbia) | Stajić, S., Institute of Forestry, Belgrade (Serbia) | Čokeša, V., Institute of Forestry, Belgrade (Serbia)
This paper present results of the research of the multi-annual trend of the diameter increment of the trees of the middle-aged Austrian pine plantations. The ages of the plantations ranges from 35 to 55 years, and the site classes from 1-5. The impact of the climate factors and thinning on the trend of the diameter increment for the period 1988-2009 was analyzed. The statistically significant dependence of the diameter increment on the quantity of precipitation was determined, whereas the dependence on the air temperature and the thinning is random. The quantity of precipitation over the vegetation seasons is directly reflected in the diameter increment, whereas the air temperatures and thinning are reflected indirectly. The thinning partially alleviates the adverse effects of the extremely low precipitation and high air temperatures on the diameter increment of the dominant trees. These relations are most clearly expressed in the analysis of the diameter increment of the dominant trees.
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