林下植被剔除对杉木林土壤呼吸和微生物群落结构的影响

贺同鑫, 李艳鹏, 张方月, 王清奎

Effects of understory removal on soil respiration and microbial community composition structure in a Chinese fir plantation

HE Tong-Xin,LI Yan-Peng,ZHANG Fang-Yue,WANG Qing-Kui

表5 土壤微生物群落结构和土壤理化性质相关关系

Table 5 Relationships between soil microbial community composition and soil physicochemical properties

NH4+-N NO3–-N 有效磷 Available phosphorus 可溶性碳 Dissolved organic carbon 微生物量碳 Microbial biomass carbon pH值 pH value 总磷脂脂肪酸浓度 Concentration of total phospholipid fatty acids -0.67* -0.49 0.85** 0.96** 0.52 -0.26 细菌浓度 Concentration of bacteria -0.61* -0.56 0.77** 0.94** 0.39 -0.26 真菌浓度 Concentration of fungi -0.72** -0.39 0.88** 0.96** 0.62* -0.28 真菌:细菌浓度比值 Ratio of fungi to bacteria concentration -0.78** 0.06 0.83** 0.73** 0.85** -0.25 革兰氏阳性细菌浓度 Concentration of Gram-positive bacteria -0.59* -0.65* 0.80** 0.92** 0.38 -0.18 革兰氏阴性细菌浓度 Concentration of Gram-negative bacteria -0.49 -0.57 0.61* 0.77** 0.32 -0.03 革兰氏阳性细菌:革兰氏阴性细菌浓度 Ratio of Gram-positive bacteria to Gram-negative bacteria concentration concentration ration -0.52 -0.60* 0.79** 0.88** 0.37 -0.26 放线菌浓度 Concentration of actinomycete -0.63* -0.47 0.86** 0.87** 0.63* -0.20