“…An uptrend in the continuous emissions of N has been reported in China since the 1980s (Zhang et al, 2007), causing China (especially southern China) to be the third largest N deposition area in the world, followed by Europe and the United States (Galloway et al, 2004). Numerous studies have shown that the N addition can change the soil microbial community (Wang et al, 2015;Zhang et al, 2017a), accelerate litter decomposition (Schuster, 2015;Zhang et al, 2017b) and reduce plant diversity (Zeng et al, 2016;Zhang et al, 2017a). All these factors have been found to affect the structure and the function of forest ecosystems (Bobbink et al, 2010), and hence to influence BVOC fluxes from forest floor (Carriero et al, 2016;Kivimäenpää et al, 2016).…”