山西太岳山主要森林生态系统碳储量与碳密度

Carbon Storage and Density of Pinus tabulaeformis and Quercus liaotungensis Forests in Taiyue Mountain of Shanxi Province,China

基于样地调查与室内分析,运用清查平均生物量法和林木相对生长模型,研究了山西太岳山林区两种森林碳储量及碳密度空间分布特征。结果表明:研究区森林生态系统植被层含碳率变化范围为4.24～6.07 g.kg-1,土壤层含碳率变化范围为5.31～50.00 g.kg-1;两种植被类型平均森林碳储量:油松林为263.03 mg.hm-2,辽东栎林为292.31 mg.hm-2,辽东栎林约为油松林的1.12倍;在空间尺度上土壤层碳储量(173.35 mg.hm-2)>乔木层(92.70 mg.hm-2)>枯落物层(6.50 mg.hm-2)>灌草层(5.23 mg.hm-2),其中土壤层碳储量约占森林生态系统碳储量的62.4%;植被层各分层碳储量大小差异显著,土壤层碳储量随着土壤深度的增加而递减。

Based on sample-plot survey and laboratory analysis, we studied the spatial distribution characteristics of two kinds of forests carbon storage and carbon density in Taiyue Mountain of Shanxi Province with average biomass inventory and trees relative growth model. The carbon content in vegetation layers of the forest ecosystem ranges from 4.24 to 6.07 g · kg-1 in the study area, the carbon content in soil layers ranges from 5.31 to 50.00 g · kg^-1. The average forest carbon storage of two vegetation types are Quercus liaotungensis with 292.31 mg · hm^-2 and Pinus tabulaeformis with 263.03 mg· hm-2. The average forests carbon storage of Q. liaotungensis is 1.12 times than that of P. tabulaeformis. In the spatial scale, the car- bon storages are in the order of soil layer （173.35 mg · hm^-2） 〉tree layer （92.70 mg · hm^-2） 〉litter layer （6.50 mg · hm^-2 ） 〉shrub-grass layer （5.23 mg· hm^-2 ） , and the carbon storage of soil layer accounts for 62.4% of the forest ecosys- tem. The carbon storage has significant difference among vegetation layers, and the carbon storage of soil layer declines with the soil depth.