jnrs Journal of New Results in Science 1304-7981 Tokat Gaziosmanpasa University The Effect of Coniferous Forest Age on Some Soil Organic Carbon Fractions in a Semiarid Ecosystem Koçyiğit Rasim GAZİOSMANPAŞA ÜNİVERSİTESİ https://orcid.org/0000-0002-5983-4830 Kasırga Zerrin GAZİOSMANPAŞA ÜNİVERSİTESİ 12 31 2019 8 2 67 73 12 19 2019 12 25 2019 Copyright © 2012, Journal of New Results in Science 2012 Journal of New Results in Science

Soil organic C content in forested areas creates a greater attention for carbon sequestration and removal of atmospheric CO2 back into soil. The aim of this study was to evaluate the effect of different age of pine forest (Pinus nigra) plantation on soil organic C content and some biological carbon fractions in a semiarid ecosystem of northern Turkey. Soil samples were taken from 0 – 5, 5 – 15, and 15 – 30 cm depths of different age (7, 14, and 40 years) of adjacent forested area with three replications. Soil organic C content significantly increased in 14yr forested area compared to 7 and 40yrs forested areas (p

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