The drivers of respiration shift from soil nutrients to water with the increase in temperature

The underlying mechanisms by which different levels of warming affect respiration are likely to vary. Identifying the drivers of respiration across varying levels of warming is essential for more accurately predicting changes in carbon processes under future warming scenarios.  This study conducted a long-term warming experiment in an alpine meadow ecosystem to investigate diurnal respiration dynamics. We analyzed diurnal and nocturnal ecosystem respiration changes under five warming gradients and investigated the mechanisms behind these changes.  Our results show that warming significantly decreased diurnal respiration. Moreover, with increasing warming intensity, the limiting factor for respiration transitioned from nutrient to water scarcity. Low-level warming decreases soil respiration, mainly by reducing soil nutrient pools. High-level warming mainly reduces soil respiration by decreasing soil moisture. Warming significantly reduces aboveground biomass, leading to a corre..., , # Data from: The drivers of respiration shift from soil nutrients to water with the increase in temperature Dataset DOI: [10.5061/dryad.v9s4mw77n](10.5061/dryad.v9s4mw77n) ## Description of the data and file structure ST： soil temperature （℃） AT: air temperature （℃） AM： relative humidity （%） P： precipitation （mm） block： \"Block\" represents the number of replicates for each treatment. \"Cover\" refers to the vegetation coverage (%) above the ground in the community. NER: nocturnal ecosystem respiration (μmol CO₂ m⁻² s⁻¹ ) NSR: nocturnal soil respiration (μmol CO₂ m⁻² s⁻¹ ) DER： daytime ecosystem respiration (μmol CO₂ m⁻² s⁻¹ ) DSR: daytime soil respiration (μmol CO₂ m⁻² s⁻¹ ) T1-T4 represent the warming gradients from low to high warming. CK represent the ambient temperature. In the soil_temperature file, the empty values of ST indicate that data loss or anomalies have occurred due to certain factors. ,