Drivers of above-ground and soil carbon accumulation in restored
forests
The best-fitting models (ΔAIC ≤ 2) explaining above-ground carbon
accumulation in restored forests included restoration type and/or forest
age, whereas the best-fitting models explaining soil carbon stocks
included exclusively soil attributes, except for the inclusion of
above-ground carbon stocks as explanatory variable of 10-20 cm soil
carbon (Table 1). Clay content was included in all soil carbon models,
whereas soil sum of bases and soil density were included in two models
(one for 0-10 cm and one for 10-20 cm; Table 1). Restoration through
natural regeneration accumulated less above-ground carbon than native
tree plantations (Fig. 3; Fig. S3). Soil carbon stocks were positively
correlated with higher sum of bases, clay content (Fig. S3), and soil
density at both 0-10 and 10-20 cm, with the relative importance of each
variable changing for the different soil depths (Fig. 3).