Multiple factors co-limit short-term in situ soil carbon dioxide emissions.

ABSTRACT: Soil respiration is a major source of atmospheric CO2. If it increases with warming, it will counteract efforts to minimize climate change. To improve understanding of environmental controls over soil CO2 emission, we applied generalized linear modeling to a large dataset of in situ measurements of short-term soil respiration rate, with associated environmental attributes, which was gathered over multiple years from four locations that varied in climate, soil type, and vegetation. Soil respiration includes many CO2-producing processes: we theorized that different environmental factors could limit each process distinctly, thereby diminishing overall CO2 emissions. A baseline model that included soil temperature, soil volumetric water content, and their interaction was effective in estimatin

SUBMITTER: Raich JW 

PROVIDER: S-EPMC9931153 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature