Table 4 Sample size requirement for AG, BG, BX, CBH, and Cacq (µmol g−1soil h−1) under the relative error of 10% under three N fertilization treatments (NN, LN and HN) in two bioenergy croplands (SG and GG).

From: Effects of nitrogen fertilization and bioenergy crop species on central tendency and spatial heterogeneity of soil glycosidase activities

Enzyme

Crop type

Relative error, %

NN

LN

HN

AG

SG

10

53

49

36

AG

GG

10

25

25

20

BG

SG

10

38

27

16

BG

GG

10

19

15

14

BX

SG

10

45

28

36

BX

GG

10

26

24

13

CBH

SG

10

123

61

55

CBH

GG

10

33

32

43

Cacq

SG

10

41

30

21

Cacq

GG

10

20

14

17

  1. Each sample size denotes the average of sample size in two plots under the same treatment. The abbreviations are referred to Tables 1 and 2.
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