Table 1 Soil properties under control, low N addition, medium N addition, and high N addition

96.69 ± 9.53 a

5.54 ± 0.26 ab

17.55 ± 2.59 a

4.99 ± 0.04 a

30.76 ± 1.36 a

35.13 ± 1.76 a

34.12 ± 2.94 a

81.60 ± 1.45 b

5.05 ± 0.01 b

16.17 ± 0.31 a

4.96 ± 0.01 a

29.29 ± 2.81 a

35.77 ± 1.55 a

34.94 ± 3.88 a

89.59 ± 1.85 ab

5.53 ± 0.10 ab

16.20 ± 0.09 a

4.79 ± 0.02 b

32.16 ± 2.75 a

36.73 ± 2.29 a

31.11 ± 4.12 a

93.12 ± 1.98 ab

5.67 ± 0.30 a

16.43 ± 0.58 a

4.67 ± 0.01 c

28.80 ± 6.74 a

35.02 ± 2.61 a

36.18 ± 9.34 a