Table 6 Main environmental factors of eight locations throughout China.

6.31 ± 0.03 abcd

28.12 ± 0.02 cde

32.65 ± 0.04 abc

8.09 ± 0.07 ab

7.43 ± 0.04 abc

8.13 ± 0.03 abcd

32.21 ± 0.02 cde

35.82 ± 0.03 abc

6.42 ± 0.06 ab

7.58 ± 0.05 a

8.56 ± 0.02 b

11.37 ± 0.15 de

8.25 ± 0.24 ab

7.24 ± 0.06 ab

8.85 ± 0.05 a

10.13 ± 0.02 b

107.69 ± 0.02 cde

357.53 ± 0.04 e

96.71 ± 2.14 de

132.04 ± 4.30 e

160.41 ± 0.01 de

135.96 ± 0.02 cde

384.35 ± 0.03 e

112.71 ± 0.04 de

5.00 ± 0.01 bcde

6.52 ± 0.01 bcd

5.40 ± 0.01 b

10.02 ± 0.06 de

6.38 ± 0.03 cde

4.09 ± 0.01 bcde

7.22 ± 0.03 bcd

6.50 ± 0.01 b

0.23 ± 0.02 e

0.25 ± 0.001 bc

0.20 ± 0.004 e

0.29 ± 0.005 de

0.32 ± 0.004 e

0.17 ± 0.001 e

0.33 ± 0.001 bc

0.16 ± 0.005 e

0.03 ± 0.001 ab

0.11 ± 0.002 cde

0.14 ± 0.003 e

0.21 ± 0.005 bc

0.05 ± 0.001 de

0.02 ± 0.001 ab

0.15 ± 0.002 cde

0.32 ± 0.003 e

2.45 ± 0.01 e

1.49 ± 0.02 de

1.62 ± 0.04 de

1.77 ± 0.03 abc

2.46 ± 0.05 e

2.60 ± 0.01 e

1.56 ± 0.02 de

2.35 ± 0.04 de

6.20 ± 0.05 abc

7.31 ± 003 bcd

6.59 ± 0.05 cde

6.39 ± 0.07 cde

6.12 ± 0.06 abcd

6.40 ± 0.05 abc

7.09 ± 003 bcd

6.20 ± 0.05 cde

7.00 ± 0.05 ab

6.90 ± 0.08 d

6.40 ± 0.04 e

4.32 ± 0.02 e

6.80 ± 0.05 cde

9.00 ± 0.05 ab

6.90 ± 0.08 d

7.60 ± 0.04 e

−7.0 ± 0.01 bcd

−4.0 ± 0.04 abcd

−8.2 ± 0.02 de

−7.6 ± 0.05 bcd

−2.2 ± 0.04 bcd

−5.6 ± 0.01 bcd

1.5 ± 0.03 abcd

−5.0 ± 0.02 de

19.0 ± 0.01 abc

22.5 ± 0.07 ab

23.4 ± 0.03 bcd

21.7 ± 0.04 d

15.5 ± 0.01 ab

13.4 ± 0.02 abc

16.3 ± 0.03 ab

16.8 ± 0.05 bc

1847.43 ± 0.03 bc

2390.80 ± 0.05 ab

3643.87 ± 0.06 c

4108.22 ± 0.04 bcd

1265.20 ± 0.04 bcde

1526.70 ± 0.03 bc

2263.20 ± 0.05 ab

1931.52 ± 0.03 bcd

40.44 ± 0.08 cd

32.80 ± 0.04 bc

39.50 ± 0.01 abc

35.00 ± 0.03 ab

31.70 ± 0.01 cd

24.60 ± 0.04 cd

30.60 ± 0.05 bc

33.90 ± 0.02 abc

−24.00 ± 0.04 de

−25.50 ± 0.06 d

−26.62 ± 0.03 bcd

−24.24 ± 0.01 bc

−28.91 ± 0.04 abc

−23.40 ± 0.04 de

−14.4 ± 0.02 d

−20.30 ± 0.03 bcd

616.32 ± 0.01 abc

635.44 ± 0.04 bc

620.30 ± 0.04 abc

530.27 ± 0.06 cde

880.30 ± 0.04 ab

627.20 ± 0.01 abc

650.45 ± 0.04 bc

642.41 ± 0.06 abc

2370.12 ± 0.04 ab

2021.35 ± 0.07 bcde

1226.55 ± 0.03 bc

2659.62 ± 0.06 abc

1738.34 ± 0.03 a

2206.40 ± 0.04 ab

2020.53 ± 0.07 bcde

2246.20 ± 0.01 bc

132.61 ± 15.38 abc

158.00 ± 9.66 a

230.54 ± 11.55 ab

121.52 ± 8.12 abc

180.00 ± 1.23 a

167.00 ± 15.38 abc

180.00 ± 9.66 a

147.35 ± 11.55 ab

2061.25 ± 36.55 a

2747 ± 87.32 c

2800 ± 56.72 c

2311.5 ± 23.65 b

2525.25 ± 121.66 b

3200 ± 67.54 d

3345.25 ± 210.4 d

3373.75 ± 121.41 d