Journal of Environmental Biology

Some bark characteristics of Black Pine (Pinus nigra arnold.) and

their variation throughout the tree height

 Orhan Sevgi¹*, H?seyin Barış Tecimen¹, Serdar Carus², Serdar Akburak¹ and Engin ?akşir³

¹Istanbul University, Faculty of Forestry, Department of Soil Science and Ecology, TR-34 473 Bah?ek?y-Istanbul, Turkey

²S?leyman Demirel University, Faculty of Forestry Dendrometry and Yield Department -Isparta, 32 260, Turkey

³Forest General Directorate, Yalova Forest Interpretation Directorate, Yalova, 77 200, Turkey

*Corresponding Author E-mail: osevgi@istanbul.edu.tr

Publication Data

Paper received:

11 June 2015

Revised received:

12 January 2016

Re-revised received:

14 July 2016

Accepted:

30 July 2016

Abstract

The sampled trees were selected from woodlands in the Ala?am Mountains located between Balıkesir and K?tahya provinces. Study was conducted on the bark samples of cross-sections taken from 2 ? 0.05 m sections of totally 20 trees and each tree were taken from different sites. 222 tree sections were obtained to be sampled. pH, weight and total nitrogen content of bark samples were determined. Total nitrogen content of tree trunk bark was calculated by multiplying nitrogen content of bark by bark weight. It was determined that bark pH increased depending on the section height and its weight decreased, however, nitrogen % value increased. R² values of linear equations that were established using section height in single trees varied between 0.45 and 0.91 (p<0,05). It was found that even though thick and woody bark residues provided a high amount of raw material to be decomposed and/or be a nest for microfauna, the formed fresh bark had more alkali content and had higher potential to be the nitrogen source for forest ecosystems.?????????

 Key words

Bark, Forest ecosystem, Pinus nigra, Section height

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