Table 5 Contruibution rate and cumulative contribution rate of principal compoinents.

From: Effects of water-fertiliser coupling on the photosynthesis and quality of Lycium barbarum based on predicted crop evapotranspiration (ETc)

Time

Principal component

Eigenvalues

Contribution rate

Cumulative contribution rate

2021

pc1

7.41

61.78

61.78

pc2

1.87

15.55

77.33

Pc3

0.92

7.68

85.01

2022

pc1

7.94

66.17

66.17

pc2

1.34

11.21

77.37

Pc3

1.18

9.80

87.17

  1. The principal components for 2021 (pc4-pc10) and 2022 (pc4-pc10) are not shown in the table because they contain only 14.01% and 13.21% of the original variance information.
Back to article page