The long-term multifactorial global change experiment

The long-term multifactorial global change experiment was established in July 2009 at the Kessler Atmospheric and Ecological Field Station (KAEFS) in McClain County, Oklahoma, USA. The field experiment employs a blocked split-plot design to investigate the effects of warming, altered precipitation, and biomass removal. Four replicate blocks, each containing six plots, were established. Each plot was further divided into two subplots: one clipped and one unclipped, resulting in a total of 48 subplots. The six treatments per block were as follows: (i) control (ambient conditions); (ii) ambient temperature with increased precipitation; (iii) ambient temperature with reduced precipitation; (iv) warming with ambient precipitation; (v) warming with increased precipitation; and (vi) warming with reduced precipitation.