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5 大兴安岭北部白桦林碳储量(t·hm-2)及分配格局(平均值±标准偏差)

Table 5 Carbon storage (t·hm-2) and allocation percentage of the Betula platyphylla forests in the north section of the Da Hinggan Ling Mountains, NE China (t·hm-2·a-1)(mean ± SD)

项目 Item 林龄 Age (a) 25 40 61 碳储量 Carbon storage 分配比例 Allocation pattern 碳储量 Carbon storage 分配比例 Allocation pattern 碳储量 Carbon storage 分配比例 Allocation pattern 乔木层 Arbor layer 11.9 ± 1.0 15.4% ± 1.4% 19.1 ± 1.0 10.5% ± 0.6% 34.2 ± 1.0 12.6% ± 0.4% 林下地被物层 Understory ground cover layer 2.3 ± 0.3 3.0% ± 0.4% 3.2 ± 0.5 1.8% ± 0.3% 4.0 ± 0.6 1.5% ± 0.2% 土壤层 Soil layer 63.2 ± 4.1 81.6% ± 5.3% 158.6 ± 3.0 87.7% ± 1.7% 233.2 ± 7.6 85.9% ± 2.8% 生态系统 Ecosystem 77.4 ± 5.4 180.9 ± 4.5 271.4 ± 9.2