Iron-bound organic carbon dynamics in peatland profiles: The preservation equivalence of deep and surface soil.

ABSTRACT: More than half of the carbon pools in peatlands are stored in the soil layers below 30 cm, yet little is known about the carbon stabilizing factors at these depths. Although iron oxide minerals are considered to be important for stabilizing organic carbon (OC), their role in the preservation of OC in peatlands, especially in the deep layers, is poorly understood. Here, we collected 1 m soil profiles from six peatlands in Central and West China to quantitatively study the vertical distribution characteristics of iron-bound OC (Fe-bound OC), and the influencing physicochemical properties of the soil. The results showed that the content of reactive iron (Fe_R) was enriched in the top layer and decreased gradually with depth. While Fe-bound OC was positively correlated with Fe_R<

SUBMITTER: Huang X 

PROVIDER: S-EPMC11197498 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature