Resumen

Neither the value of the current annual increment at maximum, nor the real time when a forest stand reaches the maximum is known a priori. Both parameters depend on the species and conditions represented by the quality class of the site and have to be determined by field measurements. However, the field measurements do not provide these quantities directly. They have to be found from periodic mean annual increments available from field measurements. Relationship between the units of the two normalized time variables – xb describing the current annual increment (rate of biomass accumulation) and xa describing the rate of expansion of the light-absorbing area can be concluded from knowing that maximum of the current annual increment is reached at L/L∞ = 0.5 when xb = 1. In units of time scale xa the light-absorbing area L is expressed by integrating Eq. (32) the result of which is similar to Eq. (17)

• Materias:Recursos energéticos renovables Energía Desarrollo sostenible Biomasa
• Subjects:Renewable energy sources Energy Sustainable development Biomass
• Palabras claves:bioenergía, bioeconomía, biosorción, gasificación
• Keywords:bioenergy, biosorption, bio-economics, gasification