Table 5 The number of significant regression coefficients of trend-surface analysis for AG, BG, BX, CBH, and Cacq (µmol g−1soil h−1) 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

Crop type

Enzyme

NN

LN

HN

SG

AG

0

2

0

BG

0

1

0

BX

2

2

0

CBH

3

3

0

Cacq

2

2

0

GG

AG

2

1

2

BG

0

1

2

BX

0

0

0

CBH

0

0

2

Cacq

0

1

2

  1. Values represent the sum of significant regression coefficients in two replicated plots under each treatment. The regression coefficients denote parameters \({\beta }_{1}\) to \({\beta }_{5}\) in Eq. (4). The significant coefficients of trend-surface analysis for each plot was presented in Table S1. The abbreviations are referred to Tables 1 and 2.
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