First results of a nation-wide systematic forest condition survey in Turkey

doi:10.3832/ifor0567-004

Monitoring of forest condition in Turkey started in 2006 when a 16x16 km grid of Level I plots was established. In 2007, the first 48 Pinus brutia plots were surveyed for crown condition. In 2008 and 2009, the plots were 398 and 563, respectively. In 2007, the mean defoliation for P. brutia was 13.0 %. In 2008-2009, the mean defoliation was 19.5-19.8 % and 27.0-23.0 % for coniferous and broadleaved species, respectively. Defoliation was higher than 25 % on 24.6-18.7 % of the monitored trees. The species with the highest defoliation were Carpinus betulus and Juniperus foetidissima in 2008, and Quercus pubescens and Juniperus communis in 2009. The slight improvement in forest health in 2009 may be attributed to better weather conditions than in 2008 (higher precipitation). The forests along the Black Sea coast of Thrace showed the highest defoliation in both 2008 and 2009. This may be due to transboundary air pollution from Istanbul, where sources of sulphate and nitrate pollution occur. Elevated defoliation rates were also observed in the Black Sea region; they were most probably caused by biotic factors in plots subject to industrial pollution.

Keywords

Forest monitoring, ICP forests, Air pollution, Health status, Defoliation, Turkey

Authors’ address

(1)

Istanbul University, Faculty of Forestry, Soil Science and Ecology Department, 34473 Bahceköy, Istanbul (Turkey)

(2)

General Directorate of Forestry, Department of Forest Management and Planning, Gazi Tesisleri 7 nolu Bina 06560 Bestepe, Ankara (Turkey)

(3)

General Directorate of Forestry, Department of Forest Management and Planning, Gazi Tesisleri 7 nolu Bina 06560 Bestepe, Ankara (Turkey)

Corresponding author

B Karabiyik
uomturkiye@ogm.gov.tr

Citation

Tolunay D, Karabiyik B, Temerit A (2011). First results of a nation-wide systematic forest condition survey in Turkey. iForest 4: 145-149. - doi: 10.3832/ifor0567-004

Paper history

Received: Jun 10, 2010
Accepted: Oct 15, 2010

First online: Jun 01, 2011
Publication Date: Jun 01, 2011
Publication Time: 7.63 months

Open Access

This article is distributed under the terms of the Creative Commons Attribution-Non Commercial 4.0 International (https://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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