@Article{bgd-3-871-2006, AUTHOR = {Hoosbeek, M. R. and Vos, J. M. and Scarascia-Mugnozza, G. E.}, TITLE = {Increased physical protection of soil carbon in the mineral soil of a poplar plantation after five years of free atmospheric CO2 enrichment (FACE)}, JOURNAL = {Biogeosciences Discussions}, VOLUME = {3}, YEAR = {2006}, NUMBER = {4}, PAGES = {871--894}, URL = {http://www.biogeosciences-discuss.net/3/871/2006/}, ISSN = {1810-6277} }