Table 3 Isotropic semi-variance function model and its parameters of SOC content in different forest types.

From: Distribution characteristics of top SOC in different forest types of Genhe in the Greater Khingan Range of Inner Mongolia

Forest types

Soil depth (cm)

Model theory

C0

C0 + C

[C0/(C0 + C)] (%)

Range (m)

R2

RSS

MG

0–5

Gaussian

0.0030

0.44

99.30

33.01

97.10

7.654E−03

5–10

Gaussian

0.00001

0.01

99.90

20.32

95.70

9.615E−06

HM

0–5

Gaussian

0.0100

5.03

99.80

36.37

95.90

2.81

5–10

Gaussian

0.0100

6.88

99.90

26.36

92.00

7.43

GH_T

0–5

Gaussian

0.0010

0.56

99.80

36.01

82.90

0.09

5–10

Gaussian

0.0001

0.14

99.90

26.66

78.30

0.01

GH_RG

0–5

Gaussian

0.0740

1.14

93.50

31.86

87.80

0.22

5–10

Gaussian

0.0210

0.70

97.00

50.87

96.30

9.547E−03

  1. MG represents Mangui; HM represents Hanma; GH_T represents Genhe Natural Forest; GH_RG represents Genhe Plantation Forest; same below.
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