Estimation of biomass and production for above- ground components, however, has been much more successful (Ter-Mikaelian and Korzukhin, 1997; Gower et al., 1999; Chen et al., 2002). Is there any lesson we can learn from the aboveground studies in order to improve the estimation of belowground fine- root biomass and production? In this study, we first compared the methodologies available for estimating biomass of fine-roots and aboveground components, and then proposed and tested a new approach to improve fine-root biomass and production estimations.