川西亚高山不同演替阶段天然次生林土壤碳氮含量及酶活性特征

胡宗达, 刘世荣, 罗明霞, 胡璟, 刘兴良, 李亚非, 余昊, 欧定华

Characteristics of soil carbon and nitrogen contents and enzyme activities in sub-alpine secondary forests with different successional stages in Western Sichuan, China

HU Zong-Da, LIU Shi-Rong, LUO Ming-Xia, HU Jing, LIU Xing-Liang, LI Ya-Fei, YU Hao, OU Ding-Hua

表4 米亚罗林区不同林型的土壤酶活性(平均值±标准偏差, n = 3)

Table 4 Soil enzyme activities in different natural secondary forests and the primary Abies faxoniana forest in Miyaluo forest area (mean ± SD, n = 3)

林型 Forest type	βG (nmol×g^-1×h^-1)	CBH (mg×g^-1×h^-1)	NAG (nmol×g^-1×h^-1)	PHO (mg×g^-1×h^-1)	PEO (mg×g^-1×h^-1)
80-NSF	22.64 ± 3.83^a	26.15 ± 2.49^a	9.76 ± 0.82^a	38.83 ± 1.59^a	36.19 ± 2.61^a
70-NSF	22.30 ± 1.23^a	25.66 ± 1.88^a	4.01 ± 0.36^b	35.09 ± 1.56^a	31.24 ± 2.91^a
60-NSF	6.20 ± 1.69^b	18.53 ± 0.95^b	2.37 ± 0.05^b	34.82 ± 1.04^a	36.69 ± 1.18^a
CK	31.54 ± 5.51^c	22.60 ± 1.03^ab	12.40 ± 0.56^c	46.02 ± 1.60^b	37.81 ± 1.54^a