Spatial and temporal analysis of land use and carbon storage dynamics in for-est ecosystems: The case of Reşadiye

Öz

This study aims to analyze land cover changes and the associated biomass and carbon stocks between 1971 and 2022 in the Reşadiye Forest Enterprises, located within the borders of the Reşadiye district of Tokat Province. Forest management plans, stand maps, and 1:25000-scale topographic maps for four periods (1971, 1991, 2012, 2022) were used as materials. According to the Intergovernmental Panel on Climate Change (IPCC) guidelines, carbon stock conditions have been calculated based on the differences between successive inventory periods. The analysis, supported by biomass and carbon conversion coefficients, was mapped with ArcGIS Desktop 10.2™ software. These results show that the proportion of pure coniferous forests increased from 6.9% to 19%, and the proportion of deciduous forests increased from 2.0% to 7.6% between 1971 and 2022. During the same period, degraded forest areas decreased from 34.2% to 15.7%; total carbon stock increased by 101.7% from 924.310 tons to 1864.306 tons. However, there was a significant decrease in biomass between 2012 and 2022. This situation highlights the impact of management practices on forest dynamics, the carbon cycle, and natural succession processes. The study highlights the importance of sustainable land use policies and the necessity of monitoring the continuity of carbon stocks. The results pro-vide valuable data for updating carbon inventories and planning climate change mitigation strategies for the Reşadiye region.

Anahtar Kelimeler

• Carbon storage
• Forest planning
• Reşadiye
• Spatial analysis
• Temporal change

Orman ekosistemlerinde arazi kullanımı ve karbon depolama dinamiklerinin mekânsal ve zamansal analizi: Reşadiye örneği

Öz

Bu çalışma, Tokat ili Reşadiye ilçesi sınırları içerisinde yer alan Reşadiye Orman İşletme Şefliği'nde 1971-2022 yılları arasında arazi örtüsü değişimlerini ve bu değişimlerle ilişkili biyokütle ve karbon stoklarını analiz etmeyi amaçlamaktadır. Materyal olarak dört döneme (1971, 1991, 2012, 2022) ait orman amenajman planları, meşcere haritaları ve 1/25000 ölçekli topografik haritalar kullanılmıştır. Hükümetlerarası İklim Değişikliği Paneli (IPCC) kılavuzuna göre, karbon stoku durumları ardışık en-vanter dönemleri arasındaki farklar temel alınarak hesaplanmıştır. Biyokütle ve karbon dönüşüm katsayıları ile desteklenen ana-liz ArcGIS Desktop 10.2™ yazılımı ile haritalanmıştır. Bulgular, 1971'den 2022'ye kadar saf iğne yapraklı ormanların %6.9'dan %19'a, geniş yapraklı ormanların ise %2.0'den %7.6'ya yükseldiğini göstermektedir. Aynı dönemde bozuk orman alanları %34.2'den %15.7'ye düşmüş; toplam karbon stoku %101.7 artarak 924.310 tondan 1864.306 tona yükselmiştir. Ancak 2012 ve 2022 yılları arasında biyokütlede önemli bir düşüş yaşanmıştır. Bu durum, yönetim uygulamalarının orman dina-mikleri, karbon döngüsü ve doğal süksesyon süreçleri üzerindeki etkilerini ortaya koymaktadır. Çalışma, sürdürülebilir arazi kullanım politikalarının önemini ve karbon stoklarının sürekliliğinin izlenmesi ihtiyacını vurgulamaktadır. Elde edilen bulgular, Reşadiye yöresi için karbon envanterlerinin güncellenmesi ve iklim değişikliği azaltım stratejilerinin planlanmasında değerli veri sağlamaktadır.

Anahtar Kelimeler

• Karbon depolama
• Mekânsal analiz
• Orman planlaması
• Reşadiye
• Zamansal değişim

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