吉林蛟河针阔混交林乔木幼苗组成及其密度格局影响因素

孟令君,姚杰,秦江环,范春雨,张春雨,赵秀海

Drivers of composition and density pattern of tree seedlings in a secondary mixed conifer and broad-leaved forest, Jiaohe, Jilin, China

Ling-Jun MENG,Jie YAO,Jiang-Huan QIN,Chun-Yu FAN,Chun-Yu ZHANG,Xiu-Hai ZHAO

表1 各土壤变量分别在3个主成分上的载荷值

Table 1 The loadings of the soil variables for each of the three PCA axes

土壤变量 Soil variables PC1 PC2 PC3 全氮 Total nitrogen 0.320 -0.337 0.538 全磷 Total phosphorus 0.450 0.182 -0.218 全钾 Total potassium -0.371 -0.492 - 有机质 Organic matter 0.378 -0.523 0.233 有效氮 Available nitrogen 0.421 -0.319 -0.359 有效磷 Available phosphorus - -0.258 -0.688 有效钾 Available potassium 0.480 0.411 - 变异解释 Proportion of variance 34.224% 18.990% 16.428%