Sustainable biomass harvesting in the Great Lakes St - CIF-SEEK
Transcription
Sustainable biomass harvesting in the Great Lakes St - CIF-SEEK
Sustainable biomass harvesting in the Great Lakes St. Lawrence forests of central Ontario What is woody biomass/biofibre? Unmerchantable material <10 cm DBH (conifer) <17 cm (Hardwood) Unused material (branches and tops) Unused merchantable material Trevor Jones Hardwood Ecosystem Scientist OMNR trevor.jones2@ontario.ca Jeff Fera Forest Research Officer CFS/CWFC Jeff.Fera@NRCan-RNCan.gc.ca St. Mary’s Paper 2007 St. Mary’s Paper 2013 Job losses 2003-2010: Job Loss: 9,000 permanent and 5,500 indefinite jobs. Decreasing contribution to GDP Ontario mill closures • Mill Closures (Ontario): Approximately 35 % and 27 indefinite mill closures. June 2005-2010 permanent closures or operational curtailments have been announced: • • • • • • • • • • • • • • • Cascades in Thunder Bay: 150 jobs lost Norampac's Red Rock operations: up to 175 jobs lost Abitibi Consolidated in Kenora: 360 workers permanently laid off Tembec's Mattawa operation: 120 employs reduced to a four day work week. Temagami Forest Products closed: with remaining 20 of 55 workers laid off Columbia Forest Products: 63 jobs lost at Rutherglen facility near North Bay. Weyerhaeuser: 35 jobs permanently lost Marathon Pulp and Paper Cascades: Thunder Bay: Announced closure for January 21, 2006 Domtar: Announced for closure in Ottawa 185 jobs lost. Domtar: Announced January 2006 closure in Cornwall 900 jobs lost Dubreuil Forest Products, 45 jobs lost at Chapleau. Weyerhaeuser, Dryden. About 80 jobs lost Bowater Thunder Bay. Between 260-280 jobs lost Tembec, Smooth Rock Falls. 230 jobs lost in closure due to take effect July 31. • Buchanan Northern Hardwoods sawmill • Abitibi lays off 90 woodlands workers in Thunder Bay (July 30). • Tembec, Timmins -- Indefinite closure • Red Rock (Norampac) Second paper machine closed • Grant Forest Products, Timmins Mill, indefinite lay-off 140 to 160 employees • Domtar, Nairn Centre employs about 140 workers, will close on October 13, 2006. • Bowater announced indefinite closure of its Ignace sawmill. • Domtar, White River sawmill began wind down operations January 12, 2007 • Abitibi closes its Fort Mill indefinitely. • Domtar announces the October 2007 closure of its Gatineau mill and Ottawa. • Hearst particle board mill indefinitely closed • Kruger Inc. Longlac, said it will let go 350 people. Ontario Harvest Levels Only 2/3 of available harvest GLSL Region Harvest Levels Only 2/3 of available harvest Proportion of shelterwood increasing Sb 50% Pj 24% Bf 68% Po 50% Bw 72% Mh 85% He 74% Ba 89% Pw 44% Pr 68% Or 128% Life cycle emissions (not including changes in forest C) Avoided coal emissions, net of wood pellet life cycle 300 Carbon balance (millions of tonnes CO2eq) 200 100 0 -100 -200 10 020 030 040 050 060 070 080 090 100 110 20 2 2 2 2 2 2 2 2 2 2 Slide courtesy S. Colombo Using pellets from live tree harvest delays GHG mitigation Avoided coal emissions, net of wood pellet life cycle Forest carbon stocks LCA avoided emissions - wood vs. coal Net carbon balance vs historic forest 200 100 Reduced forest carbon -100 Net reduction in GHG emissions after ~40 yrs -200 0 940 -10 920 -20 900 -30 880 -40 860 Carbon change 100% harvest Historic harvest -50 Change in forest carbon - bars - (millions of tonnes) 0 Forest carbon - lines - (millions of tonnes) Carbon balance (millions of tonnes CO2eq) 300 2010 2020 2030 2040 2050 2060 2070 2080 2090 2100 2110 10 020 030 040 050 060 070 080 090 100 110 20 2 2 2 2 2 2 2 2 2 2 Year Slide courtesy S. Colombo Carbon neutrality of live tree forest biomass Conclusion: Species reach break-even carbon at different rates Treed swamp Spruce-fir Hardwood Pine Species complex Slide courtesy S. Colombo Ontario’s GLSL Biomass Trial Sites Uneven aged hardwood Maple, Yellow Birch, Cedar Uneven aged hardwood Oak, Maple, Yellow Birch Pine mixedwood PRF Biomass Study: T.O.M Study Map • 130 ha harvest area (Tree Length, Full Tree) • 26 monitoring blocks stratified by structure (basal area, percent conifer) Marked Basal Area Basal area recovery Petawawa Machine Productivity Hours per hectare Machine Cost per productive hour Tree Length Full Tree Feller Buncher $188.28 1.95 2.85 Grapple Skidder $131.10 5.6 6.2 Slasher $138.40 2.5 3.0 Chainsaw $44.51 1.9 0.0 Product Price Tree Length Full Tree Sawlog $24 m3 56 m3 ha-1 56 m3 ha-1 Pulpwood $19.2 m3 24m3 ha-1 39 m3 ha-1 Residue $2.5 dt-1 0 18 dt ha-1 Daily optimized machine profitability Tree Length: 2.9 ha day-1 Full Tree: 2.6 ha day-1 Felling: 5.6 pmh Felling: 7.4 pmh Skidding: 8.0 pmh Skidding: 8.0 pmh Slashing: 7.1 pmh Slashing: 7.7 pmh Tree Length Full Tree Sawlog production 159.9 m3 144.5 m3 Pulp production 68.5 m3 100.6 m3 Residue production 0.0 46.4 dt daily revenue $5156.3 $5515.5 daily cost $4376.6 $4552.7 Total daily profit $779.8 $962.8 PRF Biomass Study: Map • 130 ha harvest area (Control, Tree Length, Full Tree) • 36 intensive permanent sample plots • 420 Extensive cruising plots Overstory damage rates Nipissing – sapling density (2-8 cm DBH) Algoma – sapling density (2-8 cm DBH) Petawawa – sapling density (2-8 cm DBH) Nipissing - Substrate cover Nipissing – snag volume Petawawa - downed wood volume Algoma – downed wood volume Nipissing – downed wood volume Variation in downed wood volumes • Organic horizons • Top 0-20 cm mineral soil • Deep 40-100 cm mineral soil Tree Length (conventional) Harvest Full Tree (biomass) Harvest “TEAMWORK: A few harmless flakes working together can unleash an avalanche of destruction.” -Justin Sewell 10 – Forest Sector 9 – Available Fibre 8 – Carbon Neutrality 7 – Harvesting Economics 6 – Damage 5 – Site Disturbance 4 – Coarse Wood 3 – Soil Nutrients 2 – Silviculture 1 – Collaboration Where do we go from here?