KASTAMONU UNIVERSITY JOURNAL OF FORESTRY FACULTY, vol.12, no.3, pp.225-227, 2012 (ESCI)
The forests of the world contain 80% of all aboveground carbon (C) and 40% of the entire belowground terrestrial C. It has been estimated that substantial amounts of belowground C may be released into the atmosphere this century, contributing significantly to global warming. Although root biomass constitutes an important component of total carbon storage in a forest, the difficulties in measuring it often lead to the lack of this component in estimating carbon sequestration. In forests, where below-ground C biomass is more than twice than the aboveground components, it is important to study the below-ground system of fine roots that may greatly influence C dynamics and may be a key indicator of ecosystem response to global change. The coarse root component is comprised of larger, structural roots which provide support for the above-ground portion and can account for approximately 30% of total biomass in forest ecosystem. Fine roots have also been regarded as short-lived and recognized as the most important component contributing to belowground C fluxes in forest ecosystems, accounting for up to 75% of the annual net primary production.