Root biomass and carbon storage in oriental spruce and beech stands in Artvin, Turkey
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In this study, influence of slope position (south-facing vs. north-facing), species type and sampling time on fine(0-2 mm), small (2-5 mm) and coarse (5-10 mm) root biomass and carbon storage of oriental spruce (Picea orientalis) and oriental beech (Fagus orientalis) were investigated. Mean total root biomass of oriental spruce was 20160 kg ha-1 in south-facing slopes and 17140 kg ha-1 in north-facing slopes. Mean total belowground C storage of oriental spruce was 7861 kg ha-1 in south-facing slopes and 6840 kg ha-1 in north-facing slopes. Similarly, biomass and C storage of oriental beech were 17190 and 6690 kg ha-1 in south-facing slopes, and 13260 and 5200 kg ha-1 in north-facing slopes, respectively. Oriental spruce had significantly higher fine root biomass than did oriental beech in south-facing slopes. Fine root biomass was significantly higher in fall than in spring in south-facing slopes.