ASSESSMENT OF THE EFFECTS OF URBAN VEGETATION STRUCTURE ON CARBON STORAGE AND SEQUESTRATION: THE CASE OF ISTANBUL-KADIKÖY

Öz

This study was conducted to develop a quantitative framework for calculating carbon sequestration and storage at the individual tree level and to provide a structure-based assessment of the contributions of urban trees to carbon dynamics. The study was carried out in six phases. After determining a suitable study area, tree measurements were taken at the individual tree level, and field data was used to create an i-Tree and R-compatible database. Carbon storage and annual carbon sequestration were calculated at the individual tree level, and the relationships between the variables were statistically analyzed. The study findings showed that complex interactions between species-specific structural attributes, growth dynamics, and dominance patterns directly influence carbon sequestration and storage capacities. These findings show that urban C mitigation strategies must move beyond simple tree counting or single-trait approaches and instead integrate species diversity, structural heterogeneity, and growth dynamics to enhance both the effectiveness and resilience of urban forest C services.

Anahtar Kelimeler

• Carbon storage
• Carbon sequestration
• Individual tree level
• Istanbul
• Kadikoy
• Structural attributes

Teşekkür

The authors would like to thank i-Tree Eco and R for the C sequestration and storage analysis used in this study. This research was produced by the thesis "Determination of Carbon Sequestration and Storage Values of Open and Green Spaces in Urban Coastal"

KENTSEL VEJETASYON YAPISININ KARBON DEPOLAMA VE TUTUMU ÜZERINDEKİ ETKİLERİNİN DEĞERLENDİRİLMESİ: İSTANBUL-KADIKÖY ÖRNEĞI

Öz

Bu çalışma, bireysel ağaç düzeyinde karbon depolama ve tutumunu hesaplamak için nicel bir çerçeve geliştirmek ve kentsel ağaçların karbon dinamiklerine katkılarının yapı tabanlı değerlendirmesini sağlamak amacıyla gerçekleştirilmiştir. Çalışma altı aşamada yürütülmüştür. Uygun bir çalışma alanı belirlendikten sonra, bireysel ağaç düzeyinde ağaç ölçümleri alınmış ve saha verileri i-Tree ve R uyumlu bir veri tabanı oluşturulmuştur. Bireysel ağaç düzeyinde karbon depolama ve yıllık karbon tutumu hesaplanmış ve değişkenler arasındaki ilişkiler istatistiksel olarak analiz edilmiştir. Çalışma bulguları, türlere özgü yapısal özellikler, büyüme dinamikleri ve baskınlık modelleri arasındaki karmaşık etkileşimlerin, karbon tutma ve depolama kapasitelerini doğrudan etkilediğini gösterdi. Sonuç olarak, bu bulgular, kentsel karbon azaltma stratejilerinin basit ağaç sayımı veya tek özellikli yaklaşımların ötesine geçmesi ve bunun yerine kentsel orman karbon hizmetlerinin hem etkinliğini hem de dayanıklılığını artırmak için tür çeşitliliğini, yapısal heterojenliği ve büyüme dinamiklerini entegre etmesi gerektiğini göstermektedir.

Anahtar Kelimeler

• Ağaç düzeyi
• İstanbul
• Kadıköy
• Karbon depolama
• Karbon tutma
• Yapısal özellikler

Teşekkür

Yazarlar, bu çalışmada karbon tutma ve depolama analizlerininde kullanılan i-Tree Eco ve R yazılımlarına teşekkür eder. Bu araştırma, “Kentsel Kıyı Alanlarındaki Açık ve Yeşil Alanların Karbon Tutma ve Depolama Değerlerinin Belirlenmesi” başlıklı yüksek lisans tez çalışması kapsamında üretilmiştir.

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