Soil Carbon Accumulation and CO₂ Flux in Experimental Restoration Plots, Southern Iceland: Comparing Soil Treatment Strategies

Table 2

Results for soil carbon analysis from this study compared with results for individual plots sampled in 2007 (study by Arnalds et al. 2013 [20]). The significance (probability ) of the difference is evaluated by one-way ANOVA.

Plot number	A layer				B layer
	2007	2012	Change		2007	2012	Change		Treatment
A-3	0.322	0.319	−	1.0	0.384	0.364	−	0.387	Control
B-9	0.217	0.436	+	<0.001	0.225	0.443	+	<0.001	Control
A-2	0.539	0.389	−	<0.001	0.467	0.378	−	<0.001	Grass
B-4	0.536	0.516	−	0.8	0.392	0.354	−	0.582	Grass
H-10	0.617	0.428	−	0.013	0.322	0.425	+	0.148	Grass
A-8	0.593	0.611	+	0.8	0.434	0.435	+	0.988	GBW
B-5	0.574	0.572	−	0.98	0.386	0.473	+	0.295	GBW
H-8	0.725	0.613	−	0.006	0.496	0.602	+	0.132	GBW
B-6	0.459	0.702	+	0.002	0.417	0.704	+	0.004	Lupine
H-9	0.469	0.611	+	0.187	0.452	0.605	+	0.057	Lupine