永久冻土
土壤碳
高原(数学)
生物地球化学循环
总有机碳
碳纤维
土壤科学
环境科学
环境化学
碳循环
地质学
土壤水分
生态系统
化学
生态学
海洋学
材料科学
数学分析
复合数
生物
复合材料
数学
作者
Cuicui Mu,Qian Zhao,Huiling Guo,Wei Zhong,Hang Su,Qingbiao Wu
摘要
Abstract A close relationship exists between soil organic carbon (SOC) and reactive iron; however, little is known about the role of iron in SOC preservation in permafrost regions. We determined the amount of SOC associated with reactive iron phases (OC‐Fe) in the permafrost regions of the Qinghai‐Tibetan Plateau (QTP). The results showed that the percentage of OC‐Fe ranged between 0.9% and 59.5% in the upper 30 cm of soil and that the OC‐Fe represented 19.5 ± 12.3% of the total SOC pool. No clear vertical distribution pattern in OC‐Fe was present in the upper 1 m of soil. Throughout the year, the OC‐Fe accounted for relatively stable proportions of the total SOC pool. This study suggests that approximately 20% of SOC is a potential rusty OC pool in the permafrost regions of the QTP. Biogeochemical processes related to the reaction of iron may play important roles in soil carbon cycles in permafrost regions.
科研通智能强力驱动
Strongly Powered by AbleSci AI