Does canopy nitrogen uptake enhance carbon sequestration by trees?

摘要

Acknowledgements We thank Archie Crofton and Radina Atanasova (University of Edinburgh), as well as Colin McEvoy and Carina Convery (Forest Research, UK) for field and technical assistance. We would like to thank Bill Mason (Forest Research UK) for access to the Gisburn Forest tree species trial. Isotope analyses were performed by Nick Morley at the University of Aberdeen, UK. This work was funded by the UK Natural Environment Research Council (NERC), grant NE/G00725 X/1 and Forestry Commission, UK. Funding to pay the open access cost of this publication was provided by NERC.