Introduction Forest ecologists use the frequency distribution of d.b.h. (diameter at breast height, 1.35 m above ground) of the stems of woody species to describe age/size structures and draw inferences about regeneration strategies, synchrony of climatic events, mortality patterns and the effects of animal browsing (e.g. recent New Zealand studies by Allen, Payton and Knowlton, 1984; Mark, 196...

crataegus as a woody multipurpose species based on fruit production is very important for local residents in the northern zagros forests located at the south of west azerbaijan province. this study aimed at determining the quantitative characteristics, soil and physiographic properties in the crataegus spp. stands. in current study, eight crataegus habitats were selected and 3-5 0.1 ha circular...

Abbreviations TC = Tabaku classification; DBH = diameter at breast height; G/R = gap/regeneration phase; E = establishment phase; EO = early optimum phase; MO = mid optimum phase; LO = late optimum phase; T = terminal phase; D = decay phase; P = plenter phase; CPA = canopy projection area; MaxD =maximum DBH; DS = deadwood share; MeanD = mean DBH; NQD = normalized quartile DBH difference; PSH = ...

Background and Purpose: Structure of crowns in forest stands is one of the main factors which determines growth and development of trees. Dynamic change occurs with the age of the stand due to silvicultural interventions or natural disturbances during which trees are removed from the stand. The aim of this article is to analyse the structure of the crown shape of pedunculate oak and common horn...