季节

坡位

土深(cm)

C0 (mg/kg)

k (d−1)

R2

C0/SOC (‰)

春季

0~10

3071.19 ± 350.28Aa

0.026 ± 0.004

0.990

22.75 ± 2.59Aa

10~20

3428.91 ± 742.63ABa

0.016 ± 0.004

0.990

25.33 ± 5.50Ba

0~10

3187.15 ± 336.33Aa

0.025 ± 0.004

0.992

20.75 ± 2.19Aa

10~20

2682.82 ± 293.89Ca

0.029 ± 0.005

0.989

17.47 ± 1.91Ca

0~10

4196.56 ± 922.01Aa

0.014 ± 0.004

0.993

39.01 ± 8.57Aa

10~20

3085.32 ± 354.22Aa

0.020 ± 0.003

0.995

28.68 ± 3.29Aa

夏季

0~10

18313.71 ± 58839.163Aa

0.001 ± 0.004

0.990

168.22 ± 540.45Aa

10~20

3143.32 ± 1678.56ABa

0.008 ± 0.005

0.988

28.87 ± 15.43Ba

0~10

3777.94 ± 3172.66Aa

0.007 ± 0.007

0.976

32.66 ± 27.46Aa

10~20

848.04 ± 194.95Da

0.020 ± 0.006

0.981

7.35 ± 1.69Da

0~10

434.86 ± 120.46(E)

3.001 ± 7.337

−0.25

3.10 ± 0.85Ba

10~20

2376.36 ± 1413.23A

0.008 ± 0.005

0.987

16.91 ± 10.06Aa

秋季

0~10

8468.51 ± 2481.00Aa

0.005 ± 0.002

0.999

171.47 ± 50.23Aa

10~20

2902.37 ± 1023.42Bb

0.010 ± 0.004

0.992

58.76 ± 20.71Ab

0~10

3054.51 ± 321.97Ab

0.014 ± 0.002

0.998

32.39 ± 3.41Ab

10~20

4784.14 ± 698.60Aa

0.011 ± 0.002

0.998

50.73 ± 7.41Aa

0~10

4587.53 ± 691.29Aa

0.012 ± 0.002

0.997

45.18 ± 6.81Aa

10~20

2835.48 ± 794.46Ab

0.011 ± 0.004

0.994

27.92 ± 7.82Ab

冬季

0~10

4276.71 ± 466.30Aa

0.029 ± 0.005

0.989

35.08 ± 3.82Aa

10~20

5344.32 ± 551.96Aa

0.030 ± 0.005

0.990

43.83 ± 4.53ABa

0~10

3766.06 ± 530.12Aa

0.031 ± 0.007

0.978

28.00 ± 3.94Aa

10~20

3892.96 ± 400.39Ba

0.029 ± 0.005

0.991

28.94 ± 2.97Ba

0~10

4362.50 ± 463.40Aa

0.035 ± 0.006

0.985

35.17 ± 3.72Aa

10~20

2935.00 ± 464.90Ab

0.035 ± 0.010

0.967

23.66 ± 3.75Ab