Phenology of Quercus brantii (Lindl.) at Kurdistan Forests of Iran

Phenological characteristics of Q. brantii were investigated at two different sites of Kurdistan Forests (Baneh and Marivan), each at three levels of altitude (1200-1400, 1400-1600, 1600-1800 m. absl) and two aspects (North and South), during 1995-2002. Overall, 10 Plots (1.0 ha), each containing 10 healthy trees were used for recording the phenological parameters. The data were analyzed statistically, using the Minitab computer program. The species phenological characteristics were as follows: Leaf and flower buds opening period: 2nd-4th week of April, the fruits start growing at 3rd-4th week of August and Mature at 1st-2nd week of November, leaves fall at 2nd-4th week of Nov., fruits fall at 3rd-4th week of Nov. The statistical analysis showed that there were significant differences between the phenological characteristics in respect to the different site physiographical characteristics. Furthermore, there were significant negative correlations between average rainfall and average air temperature and three of the phenological characteristics (leaf and flower appearance date and flowering amount). The correlation between average air temperature and leaf mature and fall date and flower or fruit amount was significantly negative