Akademik Veri Yönetim Sistemi
V. International Agricultural, Biological & Life Science Conference, Edirne, Türkiye, 18 - 20 Eylül 2023, ss.57-557, (Özet Bildiri)
While there are many studies on aboveground biomass estimations of various tree species in Turkey, there are still limited number of studies on belowground biomass (roots). Located in Istanbul-Durusu (Terkos) Coastal Dune, the study aims to develop equations that can be used to directly predict the biomass of fresh stumps and merchantable roots of stone pine (Pinus pinea L.) at the single tree and stand level. In 45 sample plots from different developmental stages, a stand representative tree was cut from each plot and roots of the cut trees were excavated. Fresh biomass of stumps and (for merchantable root biomass) the roots larger than 4 cm in diameter were weighted in field. Fresh biomass of stumps and merchantable roots of the sample trees ranged between 10.2-335.4 kg and 10.2-371.2 kg, respectively. These tree components were correlated with base diameter (d0), diameter at breast height (d1.3), tree heights (h), and stemwood overbark volumes (VKGO) using 50 models and the most significant ones were identified with statistical analyses. In both components, the Gompertz model with d0 used as the independent variable at the single tree level, was determined to be of higher importance. In order to estimate the biomass per unit area and facilitate the application on site, each tree in the sample plots were modeled by using the stemwood overbark volumes as the independent variable. Accordingly, the biomass of fresh stumps and merchantable roots per unit area in Durusu Coastal Dune afforestation varied as 13.0-249.3 t/ha and 13.3-274.1 t/ha, respectively.