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采用生物量法对经过不同采伐方式(渐伐、皆伐)兴安落叶松林更新林和未采伐的原始林的碳密度及其空间分布特征进行研究。结果表明:兴安落叶松林地上部分碳密度原始林为109.60 t/hm2,渐伐林为58.94 t/hm2,皆伐林为47.50 t/hm2,其中乔木层所占比例最大,凋落物次之,依次为草本和灌木;乔木层碳密度原始林为78.63 t/hm2,渐伐林为33.61 t/hm2,皆伐更新林最低为31.70 t/hm2;灌木的碳密度原始林为1.12 t/hm2、渐伐林为0.63 t/hm2、皆伐林为0.38 t/hm2;草本碳密度原始林为1.02 t/hm2、渐伐林为1.88 t/hm2、皆伐林为0.65 t/hm2;凋落物的碳密度原始林为28.84 t/hm2,渐伐林为22.83 t/hm2,皆伐林为14.77 t/hm2。
Biomass method was used to study the carbon density and its spatial distribution characteristics of different larch forests and intact virgin forests under different harvesting patterns (slow-cutting and clear-cutting). The results showed that the aboveground carbon density of Larix gmelinii forest was 109.60 t / hm2, that of the spruce forest was 58.94 t / hm2, and that of the clear forest was 47.50 t / hm2, with the arbor layer accounting for the largest proportion and the litterfall secondarily Which were herbaceous and shrub. The carbon density of arbor layer was 78.63 t / hm2 in original forest, 33.61 t / hm2 in forest of densification, and 31.70 t / hm2 in clear-cut forest. The density of shrub was 1.12 t / hm2 0.63 t / hm2 for deforestation, 0.38 t / hm2 for all-deforestation, 1.02 t / hm2 for herbaceous carbon density, 1.88 t / hm2 for graded forest and 0.65 t / The density of virgin forest was 28.84 t / hm2, that of the passive forest was 22.83 t / hm2, and that of the clear forest was 14.77 t / hm2.