Growth Rings of Roots in Perennial Forbs in Duolun Grassland, Inner Mongolia, China

This is an article in a special issue section (Tree Rings and Ecology : The 7th International Conference on Dendrochronology) consisting of five papers (one invited review and four research articles) selected from the 7th International Conference on Dendrochronology held 11-17 June 2006 in Beijing, China. PAGES was a co-sponsor of the conference.