Extended Data Fig. 1: A schematic map of the field experimental treatments.
From: Reduction of microbial diversity in grassland soil is driven by long-term climate warming
In the long-term climate change experiment, warming (+3 °C), half precipitation (−50% precipitation), and double precipitation (+100% precipitation) are primary factors, which are nested with clipping as the secondary factor (all the 24 southern subplots are under clipping treatment). Thus, this experiment has twelve single and combined treatments as follows: Control (N), Warming (W), Half precipitation (H), Double precipitation (D), Clipping (C), Warming & Half precipitation (WH), Warming & Double precipitation (WD), Warming & Clipping (WC), Half precipitation & Clipping (HC), Double precipitation & Clipping (DC), Warming & Half precipitation & Clipping (WHC), and Warming & Double precipitation & Clipping (WDC). Each of these treatments has four replicates in four different blocks. The site was established in July, 2009. Surface (0-15 cm) soil samples were collected annually from all plots at approximately the date of peak plant biomass in fall (September or October) from 2009 to 2016.
