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Turkey is a mountainous country with many high mountains. Recent estimations show that there are approximately 20.7 million ha of forested area in Turkey, covering 25.8% of the total land area. However, little over half of this forested area is classified as unproductive (51.7%). Artvin is located in the North Eastern Black Sea part of Turkey and is the home of a very rich biological diversity. Forests in Artvin region are in different climatic zones - from temperate climate to continental climate zone - and there are several vegetation zones in the region which ranges from sea level to the altitude of 3500 m. A Scotch pine (Pinus sylvestris L.) plantation, planted in 1996 in the alpine zone in Artvin-Ardanuc region, was investigated. The size of study area was 40 ha and this research was done on 12 sample plots. There were 50 Scotch pine seedlings on each sample plot. Height and root collar diameter of the seedlings were measured. The mean slope was the same (60%) on the sample plots, and the effects of exposure and altitude significantly affected the height and root collar diameter growth of the seedlings (P is less than 0.05). It was determined that increased altitude is associated with decreased height growth and root collar diameter of the seedlings.

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rodales zone climatique latvia vegetación alpina forest plantations climatic zones plantulas zonas climíticas ...

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