Miao Juan, Zhou Chuan-Yan, Li Shi-Jie, Yan Jun-Hua
Ying Yong Sheng Tai Xue Bao. 2014 Mar;25(3):625-31.
Taking three Pinus yunnanensis forests at different ages (19, 28 and 45 a) in Panxian County of Guizhou Province as test objects, we investigated vertical distributions and accumulation rates of soil organic carbon (SOC) and total nitrogen (TN), as well as their relationships with soil bulk density. For the three forests at different age stages, SOC and TN changed consistently along the soil profile, declining with the soil depth. Both SOC and TN storage increased with the forest age. The SOC and TN storage amounts were 96.24, 121.65 and 148.13 t x hm(-2), and 10.76, 12.96 and 13.08 t x hm(-2) for the forest stands with 19 a, 28 a and 45 a, respectively. SOC had a significant positive correlation with soil TN, while both of them had a significant negative relationship with the soil bulk density. The accumulation rates of both SOC and TN storage at different growth periods were different, and the rate in the period from age 19 to 28 was higher than in the period from age 28 to 45.
以贵州省盘县3个不同年龄（19年、28年和45年）的云南松林为试验对象，研究了土壤有机碳（SOC）和全氮（TN）的垂直分布、积累速率及其与土壤容重的关系。对于3个不同年龄阶段的林分，SOC和TN沿土壤剖面变化趋势一致，均随土壤深度增加而降低。SOC和TN储量均随林龄增加而增加。19年、28年和45年林分的SOC储量分别为96.24、121.65和148.13 t·hm-2，TN储量分别为10.76、12.96和13.08 t·hm-2。SOC与土壤TN呈显著正相关，二者与土壤容重均呈显著负相关。不同生长时期SOC和TN储量的积累速率不同，19年至28年期间的积累速率高于28年至45年期间。
