Soil sample

Latitude

(m)

Soil Water Content (%)

pH

(1:2.5H₂O)^c

SOM^b

(g∙kg⁻¹)

TN^b

(g∙kg)

${\text{NO}}_3^{-}$ -N

(μg∙g⁻¹)

${\text{NH}}_4^{+}$ -N

(μg∙g⁻¹)

Predicted soil NH₃ concentration (μM)^d

PNA

(μg ${\text{NO}}_3^{-}$ -N g⁻¹∙h⁻¹)^e

HLJ

82

18.60 ± 1.71d

5.37 ± 0.04d

49.11 ± 0.13a

1.23 ± 0.01a

30.56 ± 4.92d

19.29 ± 0.52b

0.95

0.64 ± 0.36e

BJ

57

10.82 ± 0.18f

7.98 ± 0.04a

32.78 ± 0.17b

0.87 ± 0.01b

39.01 ± 2.49c

14.81 ± 1.13d

511.72

1.60 ± 0.38c

SX

931

18.71 ± 0.32d

7.83 ± 0.02ab

28.56 ± 0.15d

0.79 ± 0.01c

140.27 ± 7.17a

26.33 ± 1.16a

372.88

2.59 ± 0.36b

HeN

60

14.30 ± 0.28e

7.87 ± 0.03a

23.61 ± 0.36g

0.71 ± 0.01e

40.56 ± 2.90c

16.96 ± 0.18c

294.34

1.27 ± 0.24cd

AH

21

13.10 ± 0.11e

7.99 ± 0.17a

27.12 ± 0.02e

0.80 ± 0.01c

36.78 ± 3.28c

18.49 ± 0.35b

553.18

3.57 ± 0.05a

JX

72

29.37 ± 0.57a

5.38 ± 0.020d

31.38 ± 0.37c

0.83 ± 0.01c

62.64 ± 3.61b

12.38 ± 0.32e

0.41

0.86 ± 0.19

CQ

320

27.76 ± 0.72b

7.72 ± 0.03b

21.34 ± 0.04h

0.68 ± 0.01f

3.85 ± 0.46f

15.38 ± 1.01d

114.73

0.43 ± 0.16e

HuN

195

23.00 ± 1.00c

6.10 ± 0.02c

24.56 ± 0.19f

0.76 ± 0.01d

23.64 ± 2.09e

16.99 ± 0.58c

3.70

0.93 ± 0.09de