Comparison of plant species diversity, site index, and mean tree ring width values of different altitudinal zones in Turkish pine stands

Serkan Özdemir; Oğuzhan Erfidan

Makale detayları

Comparison of plant species diversity, site index, and mean tree ring width values of different altitudinal zones in Turkish pine stands

Yazarlar:

Serkan Özdemir | Oğuzhan Erfidan

Yayıncı:

Isparta University of Applied Sciences

Ana Başlıklar:

Orman Biyoçeşitliliği

Dergi:

Turkish Journal of Forestry Vol.25 Issue 4, pp.423-429

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001336542

pISSN:

2149-3898

Anahtar kelimeler:

Özet:

 Diversity and productivity have consistently been central topics in forestry research. With the advent of climate change, the need to better understand increasingly scarce natural resources has become critical for sustainable use. In this study, differences in alpha species diversity, site index, and tree-ring widths across three different altitudinal zones were analyzed. Additionally, the relationships between these parameters and environmental variables were analyzed. Initially, a normality test was applied to the data. Due to the failure to meet the normality assumption, non-parametric methods were preferred for data analysis. The Kruskal-Wallis test was applied to identify differences between groups. To determine the relationships of alpha species diversity, site index, and tree-ring width with environmental variables, Spearman correlation analysis was used, focusing on the Shannon and Simpson indices. Our results showed that Shannon and Simpson diversity differ across different altitudinal zones, while no differences were observed in terms of site index and annual ring growth. On the other hand, Bio1 and Bio12 were identified as the most influential variables on diversity. Additionally, there was a relatively low negative correlation between the site index and slope variable and between annual ring growth and the radiation index variable. The findings obtained from this study provided important insights for forestry management. In particular, understanding the effects of altitude-dependent abiotic factors on species diversity and tree ring growth will enable more accurate planning.

 Diversity and productivity have consistently been central topics in forestry research. With the advent of climate change, the need to better understand increasingly scarce natural resources has become critical for sustainable use. In this study, differences in alpha species diversity, site index, and tree-ring widths across three different altitudinal zones were analyzed. Additionally, the relationships between these parameters and environmental variables were analyzed. Initially, a normality test was applied to the data. Due to the failure to meet the normality assumption, non-parametric methods were preferred for data analysis. The Kruskal-Wallis test was applied to identify differences between groups. To determine the relationships of alpha species diversity, site index, and tree-ring width with environmental variables, Spearman correlation analysis was used, focusing on the Shannon and Simpson indices. Our results showed that Shannon and Simpson diversity differ across different altitudinal zones, while no differences were observed in terms of site index and annual ring growth. On the other hand, Bio1 and Bio12 were identified as the most influential variables on diversity. Additionally, there was a relatively low negative correlation between the site index and slope variable and between annual ring growth and the radiation index variable. The findings obtained from this study provided important insights for forestry management. In particular, understanding the effects of altitude-dependent abiotic factors on species diversity and tree ring growth will enable more accurate planning.

 Diversity and productivity have consistently been central topics in forestry research. With the advent of climate change, the need to better understand increasingly scarce natural resources has become critical for sustainable use. In this study, differences in alpha species diversity, site index, and tree-ring widths across three different altitudinal zones were analyzed. Additionally, the relationships between these parameters and environmental variables were analyzed. Initially, a normality test was applied to the data. Due to the failure to meet the normality assumption, non-parametric methods were preferred for data analysis. The Kruskal-Wallis test was applied to identify differences between groups. To determine the relationships of alpha species diversity, site index, and tree-ring width with environmental variables, Spearman correlation analysis was used, focusing on the Shannon and Simpson indices. Our results showed that Shannon and Simpson diversity differ across different altitudinal zones, while no differences were observed in terms of site index and annual ring growth. On the other hand, Bio1 and Bio12 were identified as the most influential variables on diversity. Additionally, there was a relatively low negative correlation between the site index and slope variable and between annual ring growth and the radiation index variable. The findings obtained from this study provided important insights for forestry management. In particular, understanding the effects of altitude-dependent abiotic factors on species diversity and tree ring growth will enable more accurate planning.

 Çeşitlilik ve verimlilik konuları ormancılık alanında daima trend olarak araştırmacıların odağında olmuştur. Özellikle iklim değişikliği ile beraber kıt kaynak niteliğinde olan doğal kaynakların daha iyi bir şekilde anlaşılmasına olan ihtiyaç sürdürülebilir kullanımın temelini oluşturmaktadır. Bu kapsamda çalışmada üç farklı yükselti zonunda alfa tür çeşitliliği, bonitet indeksi ve yıllık halka genişlikleri arasındaki farklar analiz edilmiştir. Ayrıca bu parametrelerin çevresel değişkenler ile olan ilişkileri belirlenmiştir. Verilere ilk olarak normallik testi uygulanmıştır. Normallik varsayımının sağlanamamasından ötürü verilerin analiz edilmesinde non parametrik yöntemler tercih edilmiştir. Gruplar arasındaki farkların belirlenmesi için Kruskal-Wallis testi uygulanmıştır. Shannon ve Simpson indekslerine yönelik hesaplanan alfa tür çeşitlilikleri, bonitet indeksi ve yıllık halka büyümesinin çevresel değişkenler ile ilişkilerinin belirlenebilmesi için Spearman korelasyon analizi kullanılmıştır. Sonuç olarak farklı yükselti zonlarında Shanon ve Simpson çeşitlilikleri bakımından fark tespit edilirken, bonitet indeksi ve yıllık halka büyümesi bakımından fark olmadığı görülmüştür. Diğer yandan çeşitlilikler üzerinde en etkili değişkenler olarak Bio1 ve Bio12 tespit edilmiştir. Ayrıca bonitet indeksi ile eğim değişkeni, yıllık halka büyümesi ile de radyasyon indeksi değişkeni arasında nispeten yüksek olmayan negatif korelasyon olduğu görülmüştür. Bu çalışmadan elde edilen bulgular ormancılık yönetimi için önemli öngörüler sunmuştur. Özellikle, yüksekliğe bağlı abiyotik faktörlerin tür çeşitliliği ve yıllık halka büyümesi üzerindeki etkisinin anlaşılması daha doğru planlamaların yapılmasına olanak sağlayacaktır.

Makale detayları

Comparison of plant species diversity, site index, and mean tree ring width values of different altitudinal zones in Turkish pine stands

Yazarlar:

Serkan Özdemir | Oğuzhan Erfidan

Yayıncı:

Isparta University of Applied Sciences

Ana Başlıklar:

Orman Biyoçeşitliliği

Dergi:

Turkish Journal of Forestry Vol.25 Issue 4, pp.423-429

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001336542

pISSN:

2149-3898

Biodiversity

Kruskal-Wallis test

Pinus brutia

Productivity

Tree ring growthBiyolojik çeşitlilik

Kruskal-Wallis testi

Pinus brutia

Verimlilik

Yıllık halka büyümesi

Sayı

Makale detayları

Yazarlar: Serkan Özdemir | Oğuzhan Erfidan

Yayıncı: Isparta University of Applied Sciences

Ana Başlıklar: Orman Biyoçeşitliliği

Dergi: Turkish Journal of Forestry Vol.25 Issue 4, pp.423-429

Belge Tipi: Makale

Yayın Tarihi: 12/2024

Belge Dili: İngilizce

Document ID (Org No.): 2001336542

pISSN: 2149-3898

Sayı

Yazarlar:

Serkan Özdemir | Oğuzhan Erfidan

Yayıncı:

Isparta University of Applied Sciences

Ana Başlıklar:

Orman Biyoçeşitliliği

Dergi:

Turkish Journal of Forestry Vol.25 Issue 4, pp.423-429

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001336542

pISSN:

2149-3898