In fact, for acidic soils exposed to liming treatment with carbonate
based materials, the CO2 emissions may increase due to (i)
dissolution of carbonates and/or (ii) improvement of biological
processes with the consequent release of organically derived CO2
(Ahmad et al., 2013; Biasi et al., 2008). Nevertheless, in our study
the discrimination between these two contributions was not
assessed. However, there is a high positive correlation between
total cumulative CO2-C production (Fig. 4a) and pH (Fig. 1)
(r= 0.881, P < 0.05) which is indicative of the liming capacity of the
amendments.
In fact, for acidic soils exposed to liming treatment with carbonatebased materials, the CO2 emissions may increase due to (i)dissolution of carbonates and/or (ii) improvement of biologicalprocesses with the consequent release of organically derived CO2(Ahmad et al., 2013; Biasi et al., 2008). Nevertheless, in our studythe discrimination between these two contributions was notassessed. However, there is a high positive correlation betweentotal cumulative CO2-C production (Fig. 4a) and pH (Fig. 1)(r= 0.881, P < 0.05) which is indicative of the liming capacity of theamendments.
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