Asymmetric effect of increased and decreased precipitation in different periods on soil and heterotrophic respiration in a semiarid grassland

Climate models predict significant changes in precipitation magnitude and timing in semi-arid grasslands, where soil carbon release is particularly sensitive to changing precipitation. Using data from a 4-year (2015-2018) field manipulation experiment, we explored effects of changed precipitation in different periods on soil respiration (SR) and heterotrophic respiration (HR) in a semi-arid grassland in northern China. The results showed that:...