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Fig. 5 | Forest Ecosystems

Fig. 5

From: Soil-plant co-stimulation during forest vegetation restoration in a subtropical area of southern China

Fig. 5

Variables ordination diagram of PCA for the first three principal component axes (n = 16). E indicates eigen values; percentages in brackets indicate contribution rate. The cumulative contribution rate of 3 principal components was over 80% with eigenvalues greater than 1. Absolute value of a loading matrix greater than 0.7 indicates that variable has a significant contribution to a principal component. The distance of arrows from the center indicates the strength of the contributing variable to principal component. The cosine values of the angles between variables indicate relationship strength; angles ranging from 0° to 90° indicate variables have positive correlations, and 90° to 180° indicate negative correlations

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