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The objectives of the study was to investigate and compare the characteristics of oak advance−growth of various age present under Scots pine canopy and growing on the mesic mixed coniferous (BMśw) or mesic mixed deciduous (LMśw) forest site types. The study was conducted in Kolumna Forest District (central Poland) in 21 Scots pine stands ca. 90 years of age, and with a well−developed oak advance−growth...
Usefulness of eight biometric characteristics for determining the volume increment of standing trees is evaluated. The study material consisted of the results of complete stem analyses of 164 trees from the upper layer of 56 pine stands of age class V and older. They concerned a 56-year period from 16 th to 80 th year of trees' life divided into thirteen 5-year periods. It was found that the variation...
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