ABSTRACT In this study, we aimed at investigating carbon and nutrient concentration in litterfall components and calculating the weighted concentrations. Then, we estimated the annual carbon and nutrient return to the forest floor through litterfall. The study was carried out in even-aged stands of Pinus brutia in Antalya, in the South-Western part of Turkey. The litterfall samples were separated into five components, namely needles, bark, branches, cones, and “miscellaneous” which included flowers, buds, resins, etc. The amount of carbon and nutrients including N, P, K, Ca, Mg, Fe, Zn, Cu, Mn, and Na were determined for each component. Carbon and nutrient concentrations differed significantly among litterfall components. The mean annual carbon returned to the forest floor was found to be 1515.9 (kg ha−1yr−1), which corresponds to 51.62 % in total annual litterfall. The annual amounts of nutrients of N, Ca, K, Mg and P returned to the forest floor were calculated as 149.7, 36.9, 7.2, 6.6, and 2.1 (kg ha−1yr−1), respectively. The weighted C concentration calculated in this study can be used for more accurate national carbon sink reporting. In addition, information on nutrients returned to the forest floor via litterfall could be useful in various forest and watershed management activities.

中文翻译：

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土耳其黑松林的凋落物产量、碳和养分返回到林地

摘要 在这项研究中，我们旨在调查凋落物成分中的碳和养分浓度，并计算加权浓度。然后，我们估计了每年通过凋落物返回森林地面的碳和养分。该研究是在土耳其西南部安塔利亚的等龄松树中进行的。凋落物样品分为针叶、树皮、树枝、球果和“杂”五部分，包括花、芽、树脂等。 碳和养分含量，包括 N、P、K、Ca、Mg、Fe 、Zn、Cu、Mn 和 Na 被确定为每个组分。凋落物组分之间的碳和养分浓度显着不同。发现返回到森林地面的年平均碳为 1515.9 (kg ha-1yr-1)，相当于 51。占年度凋落物总数的 62%。N、Ca、K、Mg 和 P 每年返回林地的养分量分别计算为 149.7、36.9、7.2、6.6 和 2.1（kg ha−1yr−1）。本研究中计算的加权 C 浓度可用于更准确的国家碳汇报告。此外，关于通过凋落物返回到森林地面的养分的信息可用于各种森林和流域管理活动。