Three-Source Partitioning of Methane Emissions from Paddy Soil: Linkage to Methanogenic Community Structure.

ABSTRACT: Identification of the carbon (C) sources of methane (CH₄) and methanogenic community structures after organic fertilization may provide a better understanding of the mechanism that regulate CH₄ emissions from paddy soils. Based on our previous field study, a pot experiment with isotopic ¹³C labelling was designed in this study. The objective was to investigate the main C sources for CH₄ emissions and the key environmental factor with the application of organic fertilizer in paddies. Results indicated that 28.6%, 64.5%, 0.4%, and 6.5% of ¹³C was respectively distributed in CO₂, the plants, soil, and CH₄ at the rice tillering stage. In total, organically fertilized paddy soil emitted 3.51 kg·CH₄ ha^-1 vs. 2.00 kg·CH₄ ha^-1 for the no fertilizer treat

SUBMITTER: Yuan J 

PROVIDER: S-EPMC6479939 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature