Table 5 Variance contribution from principal component analysis of soil nutrients.

From: Effects of alfalfa and oatgrass on soil nutrients in newly cultivated land on the Loess Plateau, China

Principal component

Eigenvalue

(\(\lambda\))

Variance contribution rate

(%)

Cumulative contribution rate

(%)

1

5.161

73.732

73.732

2

1.158

16.537

90.269