Precipitation and land use alter soil respiration in an Inner Mongolian grassland

Grasslands are facing the threat of climate change and intensive land use. Soil respiration (Rs) in grassland ecosystems can be potentially altered by changes precipitation We aimed to quantify impact common use practices an Inner Mongolia grassland, i.e., mowing grazing, on soil respiration. performed situ experiment with (+ 50%, ambient, -50%) (control or fencing, mowing, grazing) explore their impacts its autotrophic (Ra) heterotrophic (Rh) components. Altered had stronger abiotic biotic drivers than use, leading Rs Over 3-year experiment, Rs, Ra Rh decreased 36%, 42% 33% reduced increased 29%, 36% 25% precipitation, respectively. Grazing caused relatively small decreases compared fencing (generally < 10%). However, interactively impacted thus Rs. The decrease was greater grazing (38%) (37%) (32%). components may under projected further fencing. Therefore, should considered when predicting carbon cycling response future changes.