Temporal variations of δ¹³C-CH₄ in rice paddies dominated by the plant-mediated pathway.

ABSTRACT: The stable carbon isotope signature of methane (δ¹³C-CH₄) helps constrain CH₄ emissions on regional to global scales, yet observations in rice paddies remain limited. The temporal dynamics of δ¹³C-CH₄ and its drivers in rice paddies are still not fully understood. Here, we conducted continuous in situ observations of CH₄ and δ¹³C-CH₄ at three canopy heights throughout a rice growing season. We investigated the emission source signature (δ¹³C_source) and partitioned it into plant-mediated (δ¹³C_P) and non-plant-mediated (δ¹³C_NP) pathways. δ¹³C_source exhibited significant temporal and vertical variability, influen

SUBMITTER: Li J 

PROVIDER: S-EPMC12266575 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature