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基于山西太岳山系灵空山景区侧柏林、油松林、辽东栎林、辽东栎和油松混交林4种林分调查,通过密集采样和样品分析研究不同林分土壤不同层次(0-10cm、10-20cm、20-30cm、30-50cm、50-100cm)有机碳含量、有机碳密度和有机碳储量及分布特征。结果如下:山西太岳山森林平均1m土层土壤的有机碳储量一般不超过30g·kg-1,调查的四种林分在16.2g·kg-1到29.6g·kg-1;所调查的四种林分的土壤有机碳储量、碳密度随着土层深度递减,其中油松林、侧柏林、辽东栎林30cm以上土壤中有机碳储量占到100cm土层中有机碳储量的85%以上,表层土壤碳储量贡献大;阔叶林碳储量高于针叶林,混交林碳储量高于纯林,辽东栎油松针阔混交林土壤有机碳含量是油松林土壤碳含量的2.4倍,辽东栎林土壤碳储量大约分别是侧柏林、油松林的1.4和1.9倍。因此为增加森林土壤固碳,建议使用混交林并减少人类活动对森林表土层的干扰和破坏。
Based on the surveys of four species of forest, ie, Platycladus orientalis, Pinus tabulaeformis, Quercus liaotungensis, Quercus liaotungensis and Pinus tabulaeformis in Lingkong Mountain Scenic Area of Taiyue Mountain in Shanxi Province, the soil samples of 0-10 cm, 10 -20cm, 20-30cm, 30-50cm, 50-100cm) organic carbon content, organic carbon density and organic carbon storage and distribution characteristics. The results are as follows: The average organic carbon storage in the soil of Taiyue Mountain in Shanxi Province was less than 30g · kg-1, and the four kinds of forests were between 16.2g · kg-1 and 29.6g · kg-1. The soil organic carbon storage and carbon density decreased along with the depth of soil layers. The contents of organic carbon in the soil above 30cm in Pinus tabulaeformis, Platycladus orientalis and Quercus liaotungensis forests accounted for more than 85% of the organic carbon storage in 100cm soil layer, The carbon storage of broad-leaved forest was higher than that of coniferous forest. The carbon storage of mixed forest was higher than that of pure forest. The content of soil organic carbon of Pinus tabulaeformis-Quercus liaotungensis forest was 2.4 times of that of Pinus tabulaeformis forest, Soil carbon storage were about 1.4 and 1.9 times, respectively, of the side berberine and Pinus tabulaeformis forests. Therefore, in order to increase the carbon sequestration of forest soils, it is advisable to use mixed forest and to reduce the disturbance and destruction caused by human activities on forest topsoil.