Fluxes and plant diversity data in urban grasslands

Files that were used in Justine et al.'s manuscript, entitled 'Lawns and meadows in urban green space - A comparison from greenhouse gas, drought resilience and biodiversity perspectives'. CO2, CH4 and N2O fluxes, C/N content in soil and plant diversity were measured in urban grasslands around Helsinki Metropolitan Area. Twelve of the sites (6 control lawns and 6 meadows) belong to the Lawns into Meadows experiment measured from 2020-2022, and provide crucial data (respiration, CH4 and N2O and plant diversity) about conversion from a lawn into a meadow. The 4 other sites includes a mesic meadow, a dry meadow, an irrigated lawn and a non-irrigated lawn, where respiration, GPP, green cover and plant diversity were recorded from 2021-2022.