We consider the biomass of a plant as their dry weight, can we take the fresh weigh as biomass
Drying leaves from a random sample of tree crowns for a species in the study area establishes a standard and simultaneously enables a precise measurement of total leaf biomass..it is called ..dry weight and is used in forest studies. With such measurements one can check to see if DBH(diameter at breast height) of a tree trunk predicts the dry weight of the crown through log-log plots and linear regression analysis.
Thanks, Adnan, for your question.
Fresh biomass weight of different organs or compartments like leaves, stem wood or roots are quite dependent on the water status of the trees as well as on ontogeny and phenology. Due to this you cannot compare fresh weight of biomass from different organs/compartments sampled at different times of the year, from trees of different age and drought-stressed trees vs. those with sufficient water supply. Thus, only removing of plant water allows the standardized comparison of plant biomass.
Cheers,
Andreas
Hello Adnan
Apart from what our colleagues just mention, you should consider the use of biomass. If you are planning on using it as a combustible fuel, then dry biomass is a more appropriate way of utilising it, cause an amount of heat that would be gained from the fuel will be wasted to drive off water vapour, before the fuel can be combusted/pyrolysed/gasified. Therefore dry biomass weight would give you a better indication. This is where the concept of ODT (oven dried ton) comes into place.
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