Soil responses to non-nitrogenous amendments in a nitrogen-saturated temperate forest: an unexpected decrease in methane oxidation after phosphorus and lime addition

摘要

We measured soil greenhouse gas fluxes and nutrient pools in a nitrogen (N)-polluted north-temperate forest and report relatively small N2O effluxes and high CH4 uptake. Six years after application, non-N fertilizers (P + K, lime) did not significantly reduce soil respiration or increase N2O efflux; however, rates of CH4 oxidation were significantly suppressed.