Experimental data of Extreme drought increases alpine carbon use efficiency through respiration suppression and community reorganization

This dataset was compiled from raw observational data from a field drought gradient experiment (treatments: P, 3/4 P, 1/2 P, 1/4 P, and 1/12 P). The original data include carbon flux metrics (CUEc, GEP, NPP, Ra, Rh, Re, ANPP, BNPP, fBNPP), species richness (Richness), plant functional groups (Grass, Sedge, Legume, Forb), and an environmental factor (Precipitation). To facilitate subsequent statistical analyses such as structural equation modeling, we removed missing values from the raw data and calculated the mean of each variable per treatment level. This summarized dataset can be used to reproduce the statistical results reported in the paper, conduct meta-analyses, or perform comparative studies.