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采集了武夷山4个不同海拔的植物群落(常绿阔叶林、针叶林、亚高山矮林和高山草甸)的土壤样品,在实验室条件下,将含水量调节为田间持水量60%,置于5℃、15℃、25℃和35℃人工气候箱中培养30d,以测定土壤净氮矿化对温度的敏感性。结果表明:相同海拔植物群落的土壤净氮矿化量和氮矿化速率均随温度的升高显著增加;不同海拔间土壤氮矿化量和氮矿化速率大小均表现为:亚高山矮林>常绿阔叶林>高山草甸>针叶林。土壤氮矿化的Q10在1.03～1.54,并且15℃升高到25℃时的Q10比5℃升高到15℃和25℃升高到35℃时的Q10高,表明土壤氮矿化对温度的敏感性在15℃～25℃较高。
Soil samples of four plant communities (evergreen broad-leaved forest, coniferous forest, sub-alpine and alpine meadow) at Wuyishan were collected. Under laboratory conditions, the water content was adjusted to 60% , Placed in 5 ℃, 15 ℃, 25 ℃ and 35 ℃ artificial climate chamber for 30 days to determine the soil sensitivity of net nitrogen mineralization to temperature. The results showed that net nitrogen mineralization rate and nitrogen mineralization rate increased with the increase of temperature in the same altitude plant communities. The soil nitrogen mineralization rate and nitrogen mineralization rate in different altitudes were as follows: > Evergreen broad-leaved forest> alpine meadow> coniferous forest. Q10 of soil nitrogen mineralization ranged from 1.03 to 1.54, and the Q10 of 15 ° C up to 25 ° C was higher than that of 5 ° C up to 15 ° C, and that of Q10 up to 35 ° C from 25 ° C showed that the mineralization of soil nitrogen to temperature The sensitivity is higher at 15 ℃ ~ 25 ℃.