长白山阔叶红松林5种优势树种的热值和能量现存量

Caloric Values and Total Standing Crop of Energy of Five Dominant Species in Broad-leaved Korean Pine Forest in Changbai Mountains

采用快速灰化法、量热法对长白山阔叶红松林5种树种的灰分质量分数、热值、去灰分热值和能量现存量进行研究。结果表明:不同器官的灰分质量分数为树叶2.12%～7.30%,树枝1.87%～7.45%,干0.52%～3.42%,根1.05%～6.53%,皮2.28%～6.87%;去灰分热值为树叶18.15～20.21kJ·g-1,树枝19.48～20.78kJ·g-1,干18.66～19.44kJ·g-1,根17.90～19.58kJ·g-1,皮17.14～20.05kJ·g-1。5种树种不同器官的灰分质量分数和去灰分热值差异均极显著(p<0.01)。红松阔叶林中5种树种能量现存总量为123.04×1011J·hm-2,其中红松最大,为67.16×1011J·hm-2,占总量的54.59%;其次为紫椴48.5×1011J·hm-2,占总量的39.42%;色木槭和蒙古栎分别为3.14×1011J·hm-2和2.99×1011J·hm-2,分别占整个林分总量的2.55%和2.43%;白桦最小1.25×1011J·hm-2,占总量的1.02%。

A study was conducted to determine the gross caloric value, ash content, ash-free caloric value, and total standing crop of energy in five tree species in broad-leaved Korean pine forests in Changbai Mountains by the quick determination method of ash content and the determination method of caloric values. Results showed that the ash content in leaves, branches, stems, roots and barks were 2.12%-7.30%, 1.87%-7.45%, 0.52%-3.42%, 1.05%-6.53% and 2.28%-6.87%, respectively. The ash-free caloric values in leaves, branches, stems, roots and barks were 18.15-20.21, 19.48-20.78, 18.66-19.44, 17.90-19.58 and 17.14-20.05kJ·g^-1 respectively. The differences in ash content, ash-free caloric value are significant between different organs of five tree species in broad-leaved Korean pine forests（P〈0.01）. The total standing crop of energy was 12304GJ·hm^-2in broad-leaved Korean pine forests, and the order from high to low was Pinus koraiensis（6716GJ·hm^-2 accounting for 54.59%, Tilia amurensis（4850GJ·hm^-2 for 39.42%, Acer mono（314GJ·hm^-2 for 2.55%, Quercus mongolica（299GJ·hm^-2 for 2.43%, and Betula platyphylla（125GJ·hm^-2 for 1.02%.