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Below-ground biomass


The living biomass of roots greater than 2 mm diameter.


Glossary. M.S. Ashton et al. (eds.), Managing Forest Carbon in a Changing Climate, DOI 10.1007/978-94-007-2232-3, © Springer Science+Business Media B.V. 2012

Alternative definition

All biomass of live roots. Fine roots of less than 2 mm diameter are excluded because these often cannot be distinguished empirically from soil organic matter or litter.

Alternative source

Terms and Definitions - FRA 2015, Forest Resources Assessment Working Paper 180, FAO, 2015 (