Wisdom Slovenia

Supply and Utilization of Bioenergy
to Promote Sustainable Forest Management
- Supply of Wood Biomass
Mag. Živan Veseli
Slovenia Forest Service
The contents of project
Wood energy maps,
Wood energy information system,
Socioeconomic aspects of wood energy,
Analysis of woodfuel market,
Extension on the field of wood energy
Dissemination of knowledge, strenghtening of
public awareness
Five main steps of WISDOM
Definition of the spatial unit of analysis
Development of DEMAND module
Development of SUPPLY module
Development of INTEGRATION module
Selection of PRIORITY areas
The Supply and the Demand Module
The supply module
Forests
Other lands
Industries (residuous)
The demand module
Household sectors
Other sectors
Forest density in Slovenia
Forest area change over the period
1975-2000 (SFI 2004)
Wood stock of Slovenian forests
The annual allowable cut of all non-timber
assortments
Actual cut of preferred fuelwood species
Skidding distance of forest compartments
Forest ownership fragmentation
(Number of forest owners per hectar – co-owners are not considered)
Summary results of non-forest woody
biomass survey
Code
Land use
classes
1100 Fields, gardens
Total
area (ha)
Mean Stocking
3
m /ha
CV
%
Mean Increment
3
m /ha/yr
CV
%
Total
stocking
m3/ha
Total
increment
m3/ha/yr
213,985
3.0
119.56
0.10
121.69
649,466
21,958
1221 Intensive orchard
5,049
33.1
78.84
1.12
79.53
167,004
5,675
1222 Extensive orchard
19,849
32.1
48.94
1.14
47.83
637,212
22,591
1310 Intensive meadow
159,652
8.5
82.43
0.28
85.27
1,358,629
44,579
187,930
19.5
73.74
0.67
73.77
3,670,979
126,499
1322
Extensive
meadow
1410
Re-growth on old
farmland
25,246
57.4
63.11
2.16
59.84
1,449,435
54,498
1500
Mixed use (agric /
forestry)
18,953
94.6
48.82
3.30
46.58
1,792,963
62,624
3000
Urban and built up
areas, roads
108,194
15.6
80.44
0.51
83.75
1,691,725
55,430
738,858
15.5
11,417,413
393,854
0.53
The average fuelwood productivity of
non-forest lands
Quantities of wood residuous in wood
processing industry (SFI 2004)
The balance between annual household consumption and
annual fuelwood production from forest and non-forest lands
3
Total stock
Increment
Million m
Forests
Non-forests
280
7.0
Household
consumption
12
0.4
1.3
Allowable
All assortments
Timber
4.0
1.8
2.2
1.4
Non-timber
Non-timber commonly used as fuel
Growing stock
All assortments
350
Timber
300
Non-timber
Non-timber commonly used as fuel
250
1.2
0.4
average
1991-2001 recent years
2.4
2.8
8
1.1
1.3
7
1.5
1.3
6
1.0
0.9
200
150
100
Million CUM
Million CUM
Actual cuts
Balance
Annual
0.3 increment
0.5
0.0
5
4
3
2
50
1
0
0
1940 1950 1960 1970 1980 1990 2000 2010
1940
1950
1960
1970
1980 1990
2000
2010