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中文摘要：
应用土壤培养法,比较分析了武夷山不同海拔高度土壤在25℃和60%田间饱和含水量条件下培养110d有机碳矿化速率和矿化率的差异。结果表明：不同海拔高度土壤有机碳矿化速率随海拔高度的升高而加快,高山草甸（0.08gCO2-C·kg^-1·d^-1）分别比亚高山矮林、针叶林、常绿阔叶林快14.3%、60.0%和166.7%,差异主要存在于0～10cm。土壤碳矿化率以针叶林最高（16.6%）,分别比亚高山矮林、常绿阔叶林、高山草甸高37.0%、67.6%和79.1%。土壤有机碳矿化速率和矿化率均随土层加深而递减,递减的幅度在不同海拔高度土壤间存在显著差异（P〈0.05）。研究结果揭示,土壤碳矿化速率和矿化比率随着海拔高度的变化而产生显著的变化。
英文摘要：
With incubation test, this paper studied the mineralization rate and mineralization ratio of soil organic carbon （SOC） along an elevation gradient in the Wuyishan National Nature Reserve of Fujian Province, Southeast China. Soil samples with a field water capacity of 60% were incubated at 25℃over 110 days. The mineralization rate of SOC increased with increasing elevation, and that in 0-40cm layer under alpine meadow （0. 08 g CO2-C · kg^-1· d^-1） was 14. 3% , 60. 0% , and 166.7% greater than that under dwarf forest, coniferous forest, and evergreen broadleaf forest, respectively, with the difference mainly existed in 0-10 cm layer. The mineralization ratio of SOC in 0-40 cm layer under coniferous forest （ 16. 6% ） was 37.0% , 67.6% , and 79. 1% higher than that under dwarf forest, evergreen broadleaf forest, and alpine meadow, respectively. The mineralization rate and mineralization ratio of SOC decreased with soil depth, and the decrement differed significantly （P 〈 01 05 ） with the soils at different elevations. It was suggested that elevation gradient had significant effects on the mineralization rate and mineralization ratio of SOC.
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