《Table 1 Area and average growing stock volume (usable volume) in different stages of stand developm

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《Carbon forestry is surprising》

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Calculations were made for a forest estate of 502 ha located in southern Finland（Table 1）.The forest consisted of 593 stand compartments.The average growing stock volume was 127 m3?ha-1（usable volume 116 m3?ha-1），of which Scots pine（Pinus sylvestris L.）accounted for33%，Norway spruce（Picea abies （L.）H.Karst.） 30%，silver birch（Betula pendula Roth）22%，downy birch（B.pubescens Ehrh.）5%，aspen（Populus tremula L.）6%and other species 4%.More than half（52%）of the stands represented mesic sites（Myrtillus type），27%were herbrich（Oxalis-Myrtillus type）and the remaining 11%were sub-xeric（Vaccinium type）.