has complex effects on terrestrial ecosystems. This work synthesized results from 54 papers
and conducted a meta-analysis to evaluate the general response of 15 variables related to
plant root traits to simulated nitrogen deposition. Simulated nitrogen deposition resulted in
significantly decreasing fine root biomass (< 2 mm diameter;− 12.8%), while significantly
increasing coarse root (≥ 2 mm diameter;+ 56.5%) and total root (+ 20.2%) biomass, but …