“…Therefore, more research needed to understand the accumulation potential of SOC under afforestation in degraded grasslands (Varamesh et al, 2014). The afforestation could be a very useful method for restoring degraded soils and ecosystems (IPCC, 2000) and in the global scale, this method is considered as soil conservation , desertification ,and an increase of carbon stock (Kumar et al, 2001;Maestre and Cortina, 2004;Nosetto et al, 2006). In a study, Giuffre et al (2003) obtained significant differences by evaluating of soil organic carbon between the afforested regions compared with the rangeland in the Patagonia, Argentina.…”