Thinning-growth relationships in Pinus brutia Ten. plantations in South-Western part of Turkey
Öz
In this study, we aimed at investigating of the effect of thinning at different levels on stand growth in P. brutia plantation areas. Study was carried out in two experimental sites, Antalya-Kaş-Tekircik and Isparta-Eğirdir-Aşağı Narlı P. brutia plantation areas between the years 1985 - 2016. Randomized block experimental design was applied in two sites, totally in five blocks and 35 parcels. Thinning was implemented in three dosage as; 1) control, 2) moderate thinning and 3) heavy thinning. Additionally in 1990 and 2004, another two thinnings were implemented in stand considering the silvicultural requirement of the stands. Results showed that mean diameter at breast height (dbh) was increased in the thinned parcels compared to control parcels. Similarly ANOVA results showed that thinnings were effective on remaining basal areas and stand volume in both sites. But at the age of 44 (in 2016), although remaining volume was differentiated depending on thinning, total stand volume was not statistically significant (p<0,05) in terms of thinning dosages. It was concluded that considering the operational purposes and providing less thinning costs with longer intervention period, thinning operations should be done by taking out the 35-40 % of the basal area in the fast growing period to gather the wood production on the trees reserved for final crop in P. brutia stands.
Anahtar Kelimeler
Kaynakça
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- Cochran, P.H., Barrett, J.W., 1998. thirty-five-year growth of thinning and unthinned Ponderosa pine in the Methow Valley of northern Washington. Res. Pap. PNW-RP-502. Portland, Or., U.S. Department of Agriculture, Forest Service, Pasific Northwest Research Station. 24 p.
Ayrıntılar
Birincil Dil
Türkçe
Konular
-
Bölüm
Araştırma Makalesi
Yazarlar
Neşat Erkan
*
Batı Akdeniz Ormancılık Araştırma Enstitüsü
0000-0003-1800-4926
Türkiye
Ali Cem Aydın
Bu kişi benim
Batı Akdeniz Ormancılık Araştırma Enstitüsü
0000-0002-2395-7548
Türkiye
Ünal Eler
Bu kişi benim
Emekli
0000-0003-1945-9922
Türkiye
Yayımlanma Tarihi
15 Kasım 2017
Gönderilme Tarihi
22 Ağustos 2017
Kabul Tarihi
3 Kasım 2017
Yayımlandığı Sayı
Yıl 2017 Cilt: 4 Sayı: 2
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