中国寒温带不同林龄白桦林碳储量及分配特征

魏红,满秀玲

Carbon storage and its allocation in Betula platyphylla forests of different ages in cold temperate zone of China

WEI Hong,MAN Xiu-Ling

表1 大兴安岭北部不同林龄白桦林样地基本概况(平均值±标准偏差)

Table 1 General information of the studied Betula platyphylla forests in the north section of the Da Hinggan Ling Mountains, NE China (mean ± SD)

林龄 Stand age (a) 坡度 Slope (°) 密度 Stand density (No.·hm-2) 郁闭度 Canopy density 平均树高 Mean tree height (m) 平均胸径 Mean DBH (cm) 林下主要植物 Main understory plants 25 ± 6 3 ± 1 1 825 ± 225 0.7 ± 0.1 8.6 ± 1.6 7.1 ± 1.8 1, 2, 3, 5, 6, 8 40 ± 4 2 ± 1 2 075 ± 300 0.9 ± 0.1 11.1 ± 3.0 9.5 ± 1.8 1, 2, 4, 5, 7, 9 61 ± 7 6 ± 2 1 820 ± 250 0.8 ± 0.1 15.2 ± 3.5 12.4 ± 2.2 1, 2, 4, 5, 6, 7, 8