亚热带常绿阔叶林土壤胞外酶活性对碳输入变化及增温的响应

刘珊杉, 周文君, 况露辉, 刘占锋, 宋清海, 刘运通, 张一平, 鲁志云, 沙丽清

Responses of soil extracellular enzyme activities to carbon input alteration and warming in a subtropical evergreen broad-leaved forest

LIU Shan-Shan, ZHOU Wen-Jun, KUANG Lu-Hui, LIU Zhan-Feng, SONG Qing-Hai, LIU Yun- Tong, ZHANG Yi-Ping, LU Zhi-Yun, SHA Li-Qing

表3 不同处理下亚热带常绿阔叶林土壤基本理化性质(平均值±标准偏差, n = 5)

Table 3 Basic physical and chemical properties of soil in the subtropical evergreen broad-leaved forest under different treatments (mean ± SD, n = 5)

处理 Treatment	土壤含水量 Soil water content (%)	铵态氮含量 NH₄⁺-N content (mg·kg^-1)	硝态氮含量 NO₃^--N content (mg·kg^-1)	溶解有机碳含量 Dissolved organic carbon content (mg·kg^-1)	溶解总氮含量 Total dissolved nitrogen content (mg·kg^-1)	溶解有机氮含量 Dissolved organic nitrogen content (mg·kg^-1)	矿质氮含量 Mineral-N content (mg·kg^-1)
0-5 cm
CK	34.35 ± 2.30^aA	61.11 ± 11.30^abA	10.26 ± 3.75^aA	235.88 ± 21.76^aA	118.79 ± 16.82^abA	47.43 ± 7.77^aA	71.36 ± 9.19^abA
LR	26.35 ± 0.81^bA	43.74 ± 4.55^bA	10.03 ± 3.31^aA	267.48 ± 21.10^aA	93.92 ± 4.01^bA	40.16 ± 3.41^aA	53.76 ± 1.49^bA
TR	33.65 ± 1.35^aA	89.08 ± 6.10^aA	2.49 ± 0.27^aA	259.62 ± 17.47^aA	143.56 ± 7.52^aA	51.99 ± 8.12^aA	91.57 ± 5.93^aA
TR+W	29.41 ± 1.16^abA	52.56 ± 1.19^bA	3.90 ± 0.16^aA	232.33 ± 20.29^aA	103.89 ± 7.87^abA	47.44 ± 8.38^aA	56.45 ± 1.31^bA
5-10 cm
CK	32.44 ± 1.07^aA	29.12 ± 3.22^aB	5.73 ± 0.23^bA	207.73 ± 13.46^bA	48.11 ± 2.88^bB	13.27 ± 4.96^aB	34.84 ± 3.09^aB
LR	30.00 ± 0.58^bB	28.72 ± 1.68^aA	7.55 ± 0.74^abA	269.07 ± 13.14^aA	61.43 ± 2.79^aB	25.16 ± 1.52^aB	36.27 ± 2.34^aB
TR	32.56 ± 0.72^aA	28.88 ± 1.77^aB	9.35 ± 0.90^aB	189.94 ± 10.05^bB	52.78 ± 4.49^abB	14.55 ± 3.98^aB	38.23 ± 1.73^aB
TR+W	30.95 ± 0.37^abA	33.42 ± 1.94^aB	5.18 ± 0.75^bA	214.82 ± 9.62^bA	53.44 ± 3.15^abB	14.83 ± 2.20^aB	38.60 ± 2.01^aB