青藏高原禾草混播对土壤微生物多样性的影响
姜鑫, 牛克昌

Effects of grass mixed-sowing on soil microbial diversity on the Qingzang (Tibetan) Plateau
JIANG Xin, NIU Ke-Chang
表1 广义线性混合模型检验混播和施肥对土壤微生物多样性的影响
Table 1 Summary of the effect of mix-sowing and fertilization on variation in soil microbial diversity tested by generalized linear mixed effect model
变量 Variable变异度 Variability (%) | F混播
Mixed-
Sowing
施肥 Fertilized
单播/混播
Single-sowing/Mixed-sowing (df = 1)
施肥/不施肥
Fertilized/Unfertilized
(df = 2)
单播
Single-sowing
混播
Mixed-sowing
土壤微生物多样性 Soil microbial diversity
细菌丰富度(Chao1) Bacterial richness (Chao1)38.33 | 37.87*2.72 | 0.69-96.92*-30.44-13.61
细菌Shannon多样性
Bacterial Shannon diversity
44.35 | 41.51*0.15 | 0.04-0.60*-0.02-0.05
真菌丰富度(Chao1) Fungal richness (Chao1)16.03 | 3.102.18 | 0.50-28.2219.30-12.65
真菌Shannon多样性
Fungal Shannon diversity
8.16 | 3.367.14 | 1.33-0.15-0.04-0.50
土壤理化因子 Soil edaphic factor
土壤pH Soil pH18.17 | 55.48*27.47 | 7.25*-0.22*-0.24*-0.12*
土壤湿度 Soil humidity10.95 | 3.499.01 | 1.870.02-0.01-0.02
土壤全氮含量 Soil total nitrogen content68.81 | 51.36*2.46 | 1.47-0.21*0.060.00
土壤全磷含量 Soil total phosphorus content41.15 | 16.46*5.23 | 1.681.23*0.180.46
土壤有效氮含量 Soil available nitrogen content0.38 | 0.770.80 | 0.12-0.00-0.180.00
土壤速效磷含量 Soil available phosphorus content8.25 | 4.4331.78 | 8.47*0.040.08*0.05*
土壤有机碳含量 Soil organic carbon content0.52 | 0.269.07 | 1.541.203.01-0.42
植物群落 Plant community
植物地上生物量 Plant aboveground biomass1.45 | 0.4427.98 | 6.83*-11.2014.3626.93*
植物物种丰富度 Plant species richness0.84 | 1.0134.08 | 7.69*1.33-1.11-4.89*