ALTERNATIVES FOR THE SUPPLY OF BIOMASS

Transcription

1 ALTERNATIVES FOR THE SUPPLY OF BIOMASS Introduction Quantification, supply and life cycle evaluations and analysis of woody biomass has been done in the framework of Policity Main objectives: Available material amounts Supply procedure design Cost estimation for raw material obtaining Life Cicle Analysis 1

2 Materials and methods Target area: 30 km surrounding where is projected the installations. Partial evaluations for 10, 15, 20 and 25 km. Spatial analysis has been done for different kind of material Criteria: Included forest material sustainably harvested, and other wooden products Excluded protected forests and wood residuals including chemicals (varnish, paints, glue) Main information sources Catalonian Soil Map Coverages (MCSC) Catalonian Ecologic and Forest Inventory (IEFC) Third National Forest Inventory (IFN3) Residual Board data (Junta de Residus) 2

3 Target area Land uses in target area 3

4 Available harvestable areas (ha) Forest type Radius= 30 km R=25 km R=20 km R=15 km R=10 km Mediterranean pines 32,595 24,160 14,258 6,914 3,376 Mixed pine and oak 12,764 10,478 7,591 3,205 2,103 Oaks 7,968 5,128 3,199 1, Productive conifers Total 3, ,038 40,211 25,19 11,887 6,153 Available forest material T/year Immediat scenary (NOW) Sustainable scenary (FUTURE) Radius (km) Available area (ha) Small wood Small wood + forest residuals Small wood Small wood + forest residuals 30 57,038 11,551 23,125 9,364 41, ,211 8,145 16,255 6,808 30, ,219 5,045 10,138 4,265 18, ,887 2,364 4,743 2,009 8, ,153 1,236 2,489 1,046 4,596 4

5 NOW Available small wood from forests and harvesting residuals FUTURE Available small wood from forests and harvesting residuals 5

6 Available woody byproducts (t) Radius (km) Wood (t/any) Prunning & gardening (t/any) Total (t/any) Acumulated (t/any) 10 23, ,693 23, , ,443 15, , ,304 11, , ,384 4, TOTAL 55, ,534 55,534 Woody byproducts production (t/year) 6

7 Restrictions Urban areas forests: Landscape and leisure priority in front of productivity Management lackness Continuous forests: High vulnerability of forests against big forest fires Other barriers: Lack of previous experiences Static supply chains and weak networks Minimum economical benefits of forest harvesting or silvicultural operations Lack of additional areas for buffer storage, processing and driying. Supply procedures design Chipping on site Chipping on landing/road Chipping on plant 7

8 Driying Buffer storage Other operations Forest fires protection areas and harvesting residuals Procedure Material Cutting Chipping on site Harvesting residuals Branches Forest chip transport 8

9 Thinnings: chipping on landing or road Procedure Materials Cutting Piling Yarding Diameter >15 cm D<15 cm On road chipping Chip transport Thinning and fellings: chipping on plant Procedure Materials Cutting Piling Logging D>15 cm D<15cm Transport Chipping on plant 9

10 Woody residuals: chipping on plant Procedure Materials Chipping Transport Clean wood residuals Prune products Storage Forest enterprise sector diagnosis Scarce forest activity Important social function of the forests Important gardening activity (no amounts data) Important residual wood amount management (not from forest) 10

11 Management facilities distribution Transport time for different municipalities 11

12 Approximative costs Harvested amount (t/ha) Chipping Harvesting ( /ha) Transport ( /ha/h) Harvesting ( /t) Transport ( /t/h) 1,50 Small stem wood in low density forests Origin Destination 172,94 166,34 2,92 3,01 115,68 111,26 1,96 2,01 4,29 Whole small trees in low density forests Origin Destination 292,34 273,39 8,39 8,64 68,14 63,73 1,96 2,01 6,58 Whole small trees in high density forests Origin Destination 363,86 334,79 12,88 13,25 55,29 50,87 1,96 2,01 16,09 Big tree branches and whole small trees in low density forests Origin Destination 899,84 859,92 31,47 32,38 55,93 53,45 1,96 2,01 32,37 Big tree branches and whole small trees in high density forests Origin 1479,50 63,33 45,71 Destination 1254,56 65,16 38,76 1,96 2,01 Approximative costs 12

13 Life Cycle Assessment 3 scenarios evaluated 1A Wooden byproducts from small scale collecting 1B Wooden byproducts from large scale collecting 2 Biomass from forests 13

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16 Conclusions 1/2 16

17 Conclusions 2/2 Thanks for your attention 17

18 ALTERNATIVES FOR THE SUPPLY OF BIOMASS 18