Güner Şükrü Teoman, Kiracioğlu Özgür, Sarimehmetoğlu Abdullah
Ulus Vocational School, Department of Forestry, Bartın University, 74600, Ulus, Bartın, Türkiye.
General Directorate of Forestry, İzmir Regional Directorate of Forestry, 35530, Karşıyaka, İzmir, Türkiye.
Environ Monit Assess. 2024 May 22;196(6):571. doi: 10.1007/s10661-024-12727-7.
This study was conducted to determine the changes in carbon stocks of oriental beech (Fagus orientalis) according to stand development stage in the Marmara Region of Türkiye. For this purpose, sample plots were taken from a total of 32 areas encompassing four stand development stages (young, middle age, mature and overmature stand). The diameter at breast height and height of all trees in the sample plots were measured, and only three dominant trees's ages per plot were determined. Aboveground carbon stock was calculated using equations developed for beech forests, while the coefficients in the Agriculture, Forestry and Other Land Use guide were used to determine belowground carbon stocks. A soil pit was dug in each plot and soil samples were taken at different depths (0-10, 10-30, 30-60, 60-100 cm). In addition, litters were sampled from four different 25 × 25 cm sections in each plot, and then the physical and chemical properties of the soil and litters were analysed. The variations in carbon stocks in above- and below-ground tree mass, litter and soil, and in ecosystem carbon stocks according to development stage were examined by analysis of variance and Duncan test, and the relationships between the carbon stocks were investigated by correlation analysis. Aboveground (AG) and belowground (BG) tree, soil and ecosystem carbon stocks showed significant differences between the four stand development stages (P < 0.05), but not the litter carbon stocks (P > 0.05). AG and BG tree and ecosystem carbon stocks increased with progressive stand development stages, while the soil carbon stock was the highest at the young stage. These findings will contribute to the preparation of forest management plans and the national greenhouse gas inventory.
本研究旨在确定土耳其马尔马拉地区东方山毛榉（Fagus orientalis）碳储量随林分发育阶段的变化。为此，从涵盖四个林分发育阶段（幼龄、中龄、成熟和过成熟林分）的总共32个区域设置了样地。测量了样地内所有树木的胸径和树高，每个样地仅确定三棵优势树的年龄。地上碳储量使用针对山毛榉林开发的方程进行计算，而农业、林业和其他土地利用指南中的系数用于确定地下碳储量。在每个样地挖一个土坑，并在不同深度（0 - 10、10 - 30、30 - 60、60 - 100厘米）采集土壤样本。此外，在每个样地的四个不同25×25厘米区域采集凋落物样本，然后分析土壤和凋落物的物理和化学性质。通过方差分析和邓肯检验研究地上和地下树木生物量、凋落物和土壤中的碳储量以及生态系统碳储量随发育阶段的变化，并通过相关分析研究碳储量之间的关系。地上（AG）和地下（BG）树木、土壤和生态系统碳储量在四个林分发育阶段之间存在显著差异（P < 0.05），但凋落物碳储量无显著差异（P > 0.05）。AG和BG树木及生态系统碳储量随着林分发育阶段的推进而增加，而土壤碳储量在幼龄阶段最高。这些研究结果将有助于森林经营计划的制定和国家温室气体清单的编制。
