How do forest types regulate soil organic carbon quantity and quality in southeastern Xizang? Evidence from soil organic carbon and the carbon pool management index

The forest soil carbon pool is a core component of the terrestrial carbon cycle, and its quantity and quality are largely regulated by forest types, thereby influencing the carbon sequestration capacity of forest ecosystems. The Qinghai-Xizang Plateau is one of the regions most sensitive to global climate change, experiencing warming rates higher than the global average and pronounced ecological vulnerability. Among its subregions, southeastern Xizang is characterized by extensive forest cover a