Data from Multidimensional responses of grassland stability to eutrophication

The files contain cover and biomass data under ambient and nutrient addition (by NPK; up to 15 years) conditions at 55 NutNet sites (https://nutnet.org/), geolocations and growing seasons, and precipitation and potential evapotranspiration (1901 - 2021) at these 55 sites. Precipitation and potential evapotranspiration are used to calculate the standardized precipitation–evapotranspiration index (SPEI), these data were downloaded from https://crudata.uea.ac.uk/cru/data/hrg/cru_ts_4.06/.