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Biomass  [ BotanyEcology  ]

Dictionary of botanic terminology - index of names

  The total quantity or mass of living material within a specified area at a given time. Often refers to vegetation.  
The biomass is the total weight of living organisms or total weight of dry organic matter or stored energy content of one or more living organisms that is present at a specific time in a defined unit of the Earth's surface (species biomass), or of all the species in the community (community biomass), or of all organic matter in a given ecosystem (ecosystem biomass), or the total mass of living organisms in a given volume or mass of soil (soil biomass) or also the total mass of  microorganism in  in a given volume or mass of soil (microbial biomass).

In a more general definition the biomass is any material, excluding fossil fuels, that was or is a living organism living organisms, usually expressed in weight per unit area or as the carbon, nitrogen, or caloric content per unit area.
It includes forest and mill residues, agricultural crops and wastes, wood and wood wastes, animal wastes, livestock operation residues, aquatic plants, fast-growing trees and plants, soil and aquatic microorganism and municipal and industrial wastes.





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