栓皮栎天然次生林土壤碳储量分配格局∗

摘要

Through survey on 27 standard sample plots of natural secondary forest of Quercus variabilis in Henan Funiu Mountain, a study was conducted to find carbon storage distribution of the Quercus variabilis forest in differ-ent growth stages and different soil layers. The results were revealed as follows: the carbon storage of surface soil showed the largest among that at all soil layers of the Quercus variabilis forest in different growth stages. In different growth stage, the carbon storage of all soil layers decreased with the increase of soil depth, and there were signifi-cant differences. And in different growth stages, it was found when the age of the Quercus variabilis forest in-creased, soil carbon storage accounted for an increasing proportion. The soil nutrient in different growth stages of Quercus variabilis forest presented the surface accumulation effect, and in the soil layer ranging from 0 ~ 50 cm, with the increase of soil depth, the soil organic matter and carbon storage reduced gradually. Soil bulk density, or-ganic matter and distribution of carbon storage in soil presented differently at different layers, and the differences were significantly. The carbon storage of the Quercus variabilis forests studied was relatively higher and contributes greatly to the local forest carbon storage, due to high content of organic matter and carbon in that area.%为研究栓皮栎天然次生林土壤碳储量分配格局，通过对河南省伏牛山区栓皮栎天然次生林27个标准样地的调查，分析栓皮栎天然次生林不同生长阶段、不同土壤层次的碳储量分配格局。结果表明，栓皮栎林不同生长阶段地表土壤的碳储量最大。不同生长阶段林分土壤各层次的碳储量都随着土层深度的增加而降低，且有很大差异。而且不同生长阶段呈现出随着林龄的增加，土壤碳储量所占的比例逐渐增大。不同生长阶段栓皮栎天然次生林的土壤养分具有表聚效应，在0~50cm土层范围内，随着土壤深度的增加有机质和碳储量均逐渐减少。土壤容重、有机质和碳储量在土层的分布具有较明显的层次性，不同层次之间差异较大。栓皮栎天然次生林的碳储量水平较高，对该地区森林碳储量具有重大的贡献，主要是与该地区有机质、碳含量处于相对较高水平有关。