SHORT TERM MOBILISATION OF BIOMASS POTENTIAL IN CRITICAL SITUATIONS

摘要

Methodology for modelling of biomass potential mobilisation is using detailed spatial data and GIS tools.rnGIS model serves for identification of standard and additional biomass potentials, which can be used in criticalrnsituations. Standard biomass potential reflects availability of biomass from agriculture and forest land e.g. energy crops,rnresidual straw and hay which is not used to maintain soil fertility and animal production and smallwood from forestrnlogging. Mobilisation of biomass e.g. additional potential is based mainly on higher extraction and utilization of forestrnand agricultural biomass esp. increase of wood and straw utilization for energy purposes at the expense of materialrnutilization, animal production and soil improvement. Additional biomass can be also mobilised by shortening of rotationrnof SRC plantations. Identification of standard and additional biomass potential can serve as the source of data for designrnof energy infrastructure (e.g. cogeneration and heating plants with different boiler types) so that it would be preparedrnfor potential critical situations. In case of expected long term deficit (shortage) of conventional fossil fuels biomassrnpotential can be systematically increased through development of energy crop plantations on agriculture landrnutilization. Standard biomass potential is based on the idea of long term sustainable land utilization and the preferencernof wood material utilization. Additional potential and mobilisation of biomass in crisis situation is based on the shortrnterm limitation of some rules for sustainable soil utilization and change of round wood utilization from forestry.rnMobilisation of biomass potential also reflects typical one year production cycle – additional potential availability isrnlimited to one year period. Results of our modelling shows that standard and additional biomass potential is alwaysrnrelated to the given region. Many factors influence biomass potential e.g. structure of power plants, age and compositionrnof forests, soil types and climate conditions, etc. Results of biomass potential analysis for given region are not directlyrntransferable to the other regions. Paper presents the application of methodology for standard and additional biomassrnpotential analysis on case example of one of the Czech regions.