Diurnal variability of soil CO2 and CH4 fluxes and microbial community dynamics in high-alpine soils
This study investigates the effects of naturally fluctuating diurnal temperature on soil greenhouse gas exchange and microbial communities in high-alpine ecosystems. Soil CO2 and CH4 fluxes were measured over day–night cycles at two high-altitude soil sites under field conditions. In parallel, microbial community composition and methanotroph abundance were characterized using 16S rRNA gene and pmoA gene-based molecular approaches. CO2 fluxes showed consistent diurnal variation associated with changes in soil temperature, whereas CH4 oxidation exhibited contrasting temperature responses between sites. Bacterial community composition remained relatively stable across diurnal cycles. The dataset provides field measurements linking short-term environmental variability with soil greenhouse gas fluxes and microbial community characteristics in high-alpine soils.
This study investigates the effects of naturally fluctuating diurnal temperature on soil greenhouse gas exchange and microbial communities in high-alpine ecosystems. Soil CO2 and CH4 fluxes were measured over day–night cycles at two high-altitude soil sites under field conditions. In parallel, microbial community composition and methanotroph abundance were characterized using 16S rRNA gene and pmoA gene-based molecular approaches. CO2 fluxes showed consistent diurnal variation associated with changes in soil temperature, whereas CH4 oxidation exhibited contrasting temperature responses between sites. Bacterial community composition remained relatively stable across diurnal cycles. The dataset provides field measurements linking short-term environmental variability with soil greenhouse gas fluxes and microbial community characteristics in high-alpine soils.