Dataset on the effects of elevated atmospheric CO2 concentration and temperature on the carbon, nitrogen and phosphorus cycles in farmland soil and the mechanisms of microbial actions

This dataset integrates the data from two related studies, systematically exploring the effects of increased CO₂ concentration and temperature increase on the carbon (C), nitrogen (N), and phosphorus (P) cycles, organic matter stability, carbon excitation effect, and related microbial functional groups in the rhizosphere soil of major crops (soybean, rice, and corn). The data are derived from controlled open-top chamber (OTCs) pot experiments conducted in typical black soil (Mollisol/Phaeozem), as well as pot and field experiments across multiple soil types.