黄帚橐吾种群扩张对土壤理化特性与微生物功能多样性的影响

石国玺,王文颖,蒋胜竞,成岗,姚步青,冯虎元,周华坤

Effects of the spreading of Ligularia virgaurea on soil physicochemical property and microbial functional diversity

Guo-Xi SHI,Wen-Ying WANG,Sheng-Jing JIANG,Gang CHENG,Bu-Qing YAO,Hu-Yuan FENG,Hua-Kun ZHOU

表2 不同斑块的土壤理化性质(平均值±标准误差, n = 5)

Table 2 Soil characteristics in different patches (mean ± SE, n = 5)

斑块 Patch	含水量 Soil moisture (%)	pH值 pH value	含沙量 Sand content (%)	速效氮 Available nitrogen (mg·kg^-1)	速效磷 Available Phosphorus (mg·kg^-1)	速效氮磷比 Available N/P	总氮 Total nitrogen (%)	有机碳 Organic carbon (%)
对照斑块 Control	35.5 ± 2.1	6.3 ± 0.2	20.1 ± 1.1	25.6 ± 3.1^ab	4.3 ± 0.9	6.9 ± 1.52^ab	0.5 ± 0.1	3.3 ± 0.4
低密度斑块 LD	39.2 ± 1.9	6.3 ± 0.2	19.1 ± 1.4	23.8 ± 1.2^ab	2.8 ± 0.1	8.7 ± 0.71^ab	0.5 ± 0.1	3.2 ± 0.1
中密度斑块 MD	36.1 ± 1.2	6.1 ± 0.2	17.8 ± 1.0	34.7 ± 4.4^a	3.2 ± 0.4	11.2 ± 1.04^a	0.6 ± 0.1	3.7 ± 0.4
高密度斑块 HD	41.3 ± 2.5	6.0 ± 0.2	17.5 ± 2.6	22.2 ± 1.6^b	3.9 ± 0.6	6.2 ± 1.11^b	0.6 ± 0.1	4.2 ± 0.5