Forest canopy mitigates soil N2O emission during hot moments

Abstract Riparian forests are known as hot spots of nitrogen cycling in landscapes. Climate warming speeds up the cycle. Here we present results from a multi-annual high temporal-frequency study soil, stem, and ecosystem (eddy covariance) fluxes N 2 O typical riparian forest Europe. Hot moments (extreme events emission) lasted quarter period but contributed more than half soil fluxes. We demonstrate that emissions do not escape processed canopy. Rapid water content change across intermediate moisture was major determinant elevated spring. The freeze-thaw is another moment. However, according to eddy covariance measurements, modest source O. propose photochemical reactions dissolution canopy-space reduction mechanisms.