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Table 3 Results of linear models testing the effect of stand age and stand basal area, together (additive model) or separately, on mean values of potential CH4 oxidation, soil water content (SWC), mineral N concentration and CO2 production of intact soil cores (0–5 cm in depth) at the three sampling periods

From: Potential soil methane oxidation in naturally regenerated oak-dominated temperate deciduous forest stands responds to soil water status regardless of their age—an intact core incubation study

Variable

Season

Explanatory

R2

p value

df

Age

BA

CH4 oxidation

Fall 18

+

+

0.33

0.056

10

Spring 19

+

+

0.56

0.006

10

Summer 19

No model fits

SWC

Fall 18

 

0.21

0.066

11

Spring 19

 

0.34

0.036

11

Summer 19

 

0.46

0.064

6

Mineral nitrogen

Fall 18

+

+

0.46

0.018

10

Spring 19

No model fits

Summer 19

No model fits

CO2 production

Fall 18

0.32

0.060

10

Spring 19

 

0.56

0.002

11

Summer 19

 

0.42

0.049

6

  1. ANOVA p values and adjusted R2 of the best models are presented. The direction of the effects of each factor are indicated (+ increasing; − decreasing). Bulk density was not included in the table because no model fitted the data at any of the dates