Assessment of the potential for long-term soil carbon sequestration and stabilization in contrasting soils after native forest conversion to planted forests.

>p14CO>sub<2>/sub< was significantly correlated to bulk soil ¹⁴C FM (p>0.01, R² = 0.7). Surface organic carbon mostly incorporated post-bomb testing ¹⁴C, which tends to become much depleted at deeper horizons. This depth-dependent trend was similar for plantations and native forest soils, but plantation displayed more depleted ∆¹⁴C than native soils at all depths in most soil types. In most soil types, surface layers respired ¹⁴CO>sub<2>/sub< was more enriched in the native forests than in plantations, but this relation flipped at depths intervals deeper than 80 cm. The age of the respired carbon was highly dependent on soil type. Soil respiration rates and ¹⁴CO>sub<2 >/sub/p<

Aburto, Felipe||Crovo, Oscar||Czimczik, Claudia||Sierra, Carlos||Trumbore, Susan||Xu, Xiaomei

Assessment of the potential for long-term soil carbon sequestration and stabilization in contrasting soils after native forest conversion to planted forests. Conference Paper