1. THE THIRD INTERNATIONAL SCIENTIFIC CONFERENCE RURAL DEVELOPMENT 2007 BALTIC BIOMASS NETWORK SECTION “BIOENERGY IN THE BALTIC SEA REGION: ECONOMIC FEASIBILITY, CONFLICTS AND CHANCES" Modeling the amount of cutting residues and timber volumes suitable for fuel Martas Lynikas*, Michailas Palicinas*, Albinas Tebėra**, Gintautas Mozgeris***, Aida Radzevičiūtė***, Stanislovas Vrubliauskas****, Eugenija Farida Dzenajavičienė**** *Lithuanian Forest Inventory and Management Institute, ** Kaunas forestry and environmental engineering college, ***Lithuanian University of Agriculture, ****Lithuanian Energy Institute

2. The key question to be answered Use of already available methods for modeling the amount of cutting residues and timber volumes suitable for fuel New model for estimation the amount of cutting residues and the volumes of timber suitable for fuel on a forest compartment level THE THIRD INTERNATIONAL SCIENTIFIC CONFERENCE RURAL DEVELOPMENT 2007 BALTIC BIOMASS NETWORK SECTION “BIOENERGY IN THE BALTIC SEA REGION: ECONOMIC FEASIBILITY, CONFLICTS AND CHANCES"

3. Methods “Available methods” –total above- and below-ground biomass and biomass of dead wood, according to the FAO Global forest resource assessment –potentially available for fuel forest biomass as small diameter trees from thinning cuttings, felling residuals and stumps from final felling, derived using conventional cutting budget calculation methods THE THIRD INTERNATIONAL SCIENTIFIC CONFERENCE RURAL DEVELOPMENT 2007 BALTIC BIOMASS NETWORK SECTION “BIOENERGY IN THE BALTIC SEA REGION: ECONOMIC FEASIBILITY, CONFLICTS AND CHANCES"

4. Methods Limitations of “Available methods” –General data, which can be used just for strategic planning only, is obtained –Tactical and operational forest management planning requires facts on the amount of cutting residues and the volumes of timber suitable for fuel on a forest compartment level THE THIRD INTERNATIONAL SCIENTIFIC CONFERENCE RURAL DEVELOPMENT 2007 BALTIC BIOMASS NETWORK SECTION “BIOENERGY IN THE BALTIC SEA REGION: ECONOMIC FEASIBILITY, CONFLICTS AND CHANCES"

5. Methods “New method”, developed within the frames of BBN project (1) –Bases on the models, developed by team led by Dr. A. Tebėra at Kaunas Forest and Environmental Engineering College –Intensive field studies, which were carried out in 2006-2007 THE THIRD INTERNATIONAL SCIENTIFIC CONFERENCE RURAL DEVELOPMENT 2007 BALTIC BIOMASS NETWORK SECTION “BIOENERGY IN THE BALTIC SEA REGION: ECONOMIC FEASIBILITY, CONFLICTS AND CHANCES"

6. Methods “New method”, developed within the frames of BBN project (2) –Resources of biomass suitable for fuel for each forest compartment based on standard stand-wise inventory data as the input THE THIRD INTERNATIONAL SCIENTIFIC CONFERENCE RURAL DEVELOPMENT 2007 BALTIC BIOMASS NETWORK SECTION “BIOENERGY IN THE BALTIC SEA REGION: ECONOMIC FEASIBILITY, CONFLICTS AND CHANCES"

7. Methods “New method”, developed within the frames of BBN project (3) –Models to evaluate the volume of alive/dead branches are based on the polynomial functions and take into account main parameters of a single tree – diameter at breast height, height class and age. THE THIRD INTERNATIONAL SCIENTIFIC CONFERENCE RURAL DEVELOPMENT 2007 BALTIC BIOMASS NETWORK SECTION “BIOENERGY IN THE BALTIC SEA REGION: ECONOMIC FEASIBILITY, CONFLICTS AND CHANCES" For Pine, 7 tree species in total

8. Methods “New method”, developed within the frames of BBN project (4) –To define the amounts of branches potentially suitable for biofuel, another model is used THE THIRD INTERNATIONAL SCIENTIFIC CONFERENCE RURAL DEVELOPMENT 2007 BALTIC BIOMASS NETWORK SECTION “BIOENERGY IN THE BALTIC SEA REGION: ECONOMIC FEASIBILITY, CONFLICTS AND CHANCES"

9. Methods “New method”, developed within the frames of BBN project (5) –To perform the calculations suitable for forest management planning a software package, running inside the forest resource information system, was developed –It takes the compartment descriptions from conventional stand- wise inventory data banks –Models the number of trees by species and by diameter classes –Models the volume of dead/alive branches for a single tree and sums up the volumes for whole stand –Divides the total volume of branches into suitable for fuel and required for technological/biodiversity needs THE THIRD INTERNATIONAL SCIENTIFIC CONFERENCE RURAL DEVELOPMENT 2007 BALTIC BIOMASS NETWORK SECTION “BIOENERGY IN THE BALTIC SEA REGION: ECONOMIC FEASIBILITY, CONFLICTS AND CHANCES"

10. Methods “New method”, developed within the frames of BBN project (6) –Output contains volume of branches: total (alive + dead), suitable for fuel, required for technological needs/biodiversity THE THIRD INTERNATIONAL SCIENTIFIC CONFERENCE RURAL DEVELOPMENT 2007 BALTIC BIOMASS NETWORK SECTION “BIOENERGY IN THE BALTIC SEA REGION: ECONOMIC FEASIBILITY, CONFLICTS AND CHANCES"

11. Results “Available methods” –Total amount of forest biomass in Lithuanian counties THE THIRD INTERNATIONAL SCIENTIFIC CONFERENCE RURAL DEVELOPMENT 2007 BALTIC BIOMASS NETWORK SECTION “BIOENERGY IN THE BALTIC SEA REGION: ECONOMIC FEASIBILITY, CONFLICTS AND CHANCES"

12. Results “Available methods” –Amount of forest biomass and energy potential in forests of Lithuanian counties THE THIRD INTERNATIONAL SCIENTIFIC CONFERENCE RURAL DEVELOPMENT 2007 BALTIC BIOMASS NETWORK SECTION “BIOENERGY IN THE BALTIC SEA REGION: ECONOMIC FEASIBILITY, CONFLICTS AND CHANCES"

13. Results “Available methods” –Distribution of forest biomass, potentially usable as fuel for energetic needs, in Kaunas county THE THIRD INTERNATIONAL SCIENTIFIC CONFERENCE RURAL DEVELOPMENT 2007 BALTIC BIOMASS NETWORK SECTION “BIOENERGY IN THE BALTIC SEA REGION: ECONOMIC FEASIBILITY, CONFLICTS AND CHANCES"

14. Results “New method” –Volume of branches was calculated for each forest compartment of Kaunas county –This parameter is integrated into conventional forest management planning techniques –A lot of different other applications: mapping, scenarios for the profitability of selling branches for bio-fuel producers, etc. THE THIRD INTERNATIONAL SCIENTIFIC CONFERENCE RURAL DEVELOPMENT 2007 BALTIC BIOMASS NETWORK SECTION “BIOENERGY IN THE BALTIC SEA REGION: ECONOMIC FEASIBILITY, CONFLICTS AND CHANCES"

15. Volume (m 3 /ha) of branches in the forests of Kaunas county All forests

16. Volume (m 3 /ha) of branches in the forests of Kaunas county Only mature and over mature stands

17. Estimation of the amount of branches available from final felling in Kaunas forest enterprise, a) all compartments, b) total volume of branches per ha, c) total volume of branches available for fuel per ha, d) compartments assigned for final felling, e) total volume of branches available for fuel per ha within compartments assigned for final felling

18. The profit in LTL per 1 25x25 m pixel, a) 1st scenario - costs are function of extraction distance and total amount of branches per are unit, price - 22 LTL/m 3 ; 2nd scenario - costs 22 LTL/m 3 and the price – 25 LTL/m 3 THE THIRD INTERNATIONAL SCIENTIFIC CONFERENCE RURAL DEVELOPMENT 2007 BALTIC BIOMASS NETWORK SECTION “BIOENERGY IN THE BALTIC SEA REGION: ECONOMIC FEASIBILITY, CONFLICTS AND CHANCES"

19. Conclusions The total forest biomass in Lithuania amounts 275 Mt, it exceeds 200 Mt, if taking into account just above- ground biomass. Around 1.5 Mil. tones of biomass fits the category of forest resources, potentially suitable as fuel for energetic needs, annually resulting in more than 4 TWh. Small diameter trees from thinning cuts amount in Kaunas County over 15 kt, logging residues from all types of felling – 100 kt and stumps from final felling – near 88 kt. Model for the estimation of biomass for fuel from forest cutting residues is developed and shows to be operational within the frames of INTERREG IIIB Project Baltic Biomass Network. THE THIRD INTERNATIONAL SCIENTIFIC CONFERENCE RURAL DEVELOPMENT 2007 BALTIC BIOMASS NETWORK SECTION “BIOENERGY IN THE BALTIC SEA REGION: ECONOMIC FEASIBILITY, CONFLICTS AND CHANCES"