Low levels of N inputs enhance crop biomass, providing a
C substrate and larger plants, which enables CH4 production
and transport (Schimel 2000; Zheng et al. 2007). Methanotrophs
use CH4 as their sole source of C and energy, and
increased inputs of N result in greater biomass for CH4 generation
(Le Mer and Roger 2001; Nayak et al. 2007) which
simultaneously stimulates the activity of methanotrophs