不同密度杉木林对林下植被和土壤微生物群落结构的影响

丁凯, 张毓婷, 张俊红, 柴雄, 周世水, 童再康

Effects of Chinese fir plantations with different densities on understory vegetation and soil microbial community structure

DING Kai, ZHANG Yu-Ting, ZHANG Jun-Hong, CHAI Xiong, ZHOU Shi-Shui, TONG Zai-Kang

表4 不同密度杉木人工林土壤的理化性质(平均值±标准差)

Table 4 Soil physical and chemical properties of Chinese fir plantation with different densities (mean ± SD)

类型 Type	pH	束缚水含量(CW) Water content (%)	碱解氮含量 Alkali-hydrolyzable N content (mg·kg^-1)	有效磷含量 Available P content (mg·kg^-1)	速效钾含量 Available K content (mg·kg^-1)	有机质含量 Organic matter content (g·kg^-1)
KH	3.44 ± 0.06 ^b	3.17 ± 0.44 ^a	142.18 ± 9.30 ^a	2.51 ± 0.18 ^b	54.24 ± 9.24 ^a	34.29 ± 4.11 ^a
KM	3.52 ± 0.06 ^ab	3.63 ± 0.45 ^a	156.88 ± 6.54 ^a	3.31 ± 0.45 ^a	66.91 ± 11.63 ^a	38.58 ± 5.17 ^a
KL	3.62 ± 0.03 ^a	3.34 ± 0.55 ^a	156.63 ± 1.42 ^a	3.40 ± 0.32 ^a	74.72 ± 3.90 ^a	44.58 ± 1.81 ^a