Slower rate of increase in UK softwood production forecast

advertisement
SLOWER RATE OF INCREASE IN UK SOFTWOOD PRODUCTION
FORECAST
Annual softwood production in British forests – currently running at 4.5m m3 – will
reach 8.8m m3 in the period 2002/06. This is revealed in the latest review of conifer
output forecasts for Forestry Commission and private woodlands just completed by
the FC and by Timber Growers UK Ltd.
Compared with the previous forecasts (1982) – published in Forestry and British
Timber, January 1982 – the lastest prediction implies a delay in reaching the 8m m3
mark which was previously expected in the period 1997/2001.
Conifer production forecast reviews are carried out every 5 years and made for a
period of 20 years ahead. They take into account up-to-date information on the
physical state of the growing stock and other factors that influence the potential yield
such as management regimes and the length of the rotation. The FC and private
woodland forecasts are brought together by the Supply and Demand Sub Committee
of the Home Grown Timber Advisory Committee and the forecast is published under
the auspices of the HGTAC.
The presentation of these forecasts takes account of the re-organisation of the Forestry
Commission which was effective from April 1 1985 and reduced the number of
Conservancies from 11 to seven.
Industrial Capacity
The increasing volume of the timber forecast in 1982 proved to be a major incentive
to a redvelopment of the wood-processing industry following the collapse of several
large consumers during the recession in the early years of the decade. Since then over
£600m has been invested in green-field developments and in the re-equipping and
expansion of existing sawmills and in wood-based panel manufacture.
Thus, there have been dramatic changes in industrial demand, and, unlike the position
in 1982, wood production is flowing forward to a soundly-based domestic industry
fully capable of utilising it. There appears at present to be adequate capacity, installed
and planned to absorb all the sawlogs and small roundwood coming forward up to
2000.
Forestry Commission Forests
The 1987 forecast has been prepared using the same methods as those in the 1982
forecast. It is based on the Commission’s current management practices and takes
account of crop stability, recreation and landscape considerations. Such factors
generally but not invariably have the effect of deferring yield but they may be further
modified by market and contractural obligations. Further, the growing stock has been
adjusted to take account of the disposal of plantations under the Commission’s
rationalistation programme.
For these reasons, this new forecast predicts a lower rate of increase in the volume of
production. However for the first five-year period it has been decided to maintain as
closely as possible the level of production which was forecast in 1982 in order to
minimise the impact on industry. To achieve this, felling has been advanced (relative
to the new extended optimumrotations) in most FC conservancies to some degree.
Private Woodlands
The wide variation in the management objectives of private owners makes the private
sector forecast necessarily less precise. The forecast has been prepared by Timber
Growers UK Ltd in consultation with the Forestry Commission and is based on the
1979-82 Census of Woodland updated to take account of the estimated felling and
planting which has taken place since then. FC disposals to the private sector have
been added to the database.
The same criteria have been used in this forecast as were used in 1982 but have been
modified in the light of experience. The main modification have been to increase the
areas allocated to a non-thin regime based on the latest experience of windblow in
upland forests. The result is believed to be a more accurate forecast.
The 1982 forecast was of potential cut and took no account of retentions by estate
owners for amenity or conservation or for fiscal reasons. Experience showed that this
caused some confusion when interpreting the data. Therefore it has been decided to
revert to the previous practice and to produce a forecast of potential removals by
making a deduction of 10% from the potential cut to allow for timber unlikely to br
removed from the forest.
Details of the broadleaf production forecast wre published in F&BT, June 1986.
How the results were computed
The forecasts given here are standing volumes in cubic metres overbark. As in the
past, they have been computed in three parts: first, the volume of wood of 18cm
diameter and above; second, the wood between 14cm and 18cm diameter; and third,
the wood volume between 7cm and 14cm diameter.
As in the forecasts of 1977 and 1982, the convention has been maintained where by
the volume in the 18cm category and half the volume in the 14cm to 18cm category
and all the wood between 7cm and 14cm is regarded as being composed of small
roundwood.
Of necessity, this is a rather arbitrary division of the standing volume between sawlog
and small roundwood material which in practice will vary according to technical
requirements of individual customers.
Expression of the forecast in terms of standing volume in cubic metres overbark also
follows past convention. In order to estimate the extracted volume, allowance must be
made for the gross difference between standing and extracted volumes which includes
not only waste but covers the effects of different measurement methods and
conventions.
Where sawlogs are sold in under-bark terms, a further reduction must be made to
allow for the volume of bark.
Table I
Forecast of average annual cut of conifer roundwood in Britain by five-year periods
1987-2006: Forestry Commission forests and private woodlands
(Volume: thousand cubic metres overbark)
Period
Country
Small Roundwood
Logs
Total
FC
1987-91
1992-96
1997-01
2002-06
PW
Total
FC
PW
Total
FC
PW
Total
England
Scotland
Wales
515
620
310
435
465
80
950
1085
390
680
830
430
385
310
55
1065
1140
485
1195
1450
740
820
775
135
2015
2225
875
GB Total
1445
980
2425
1940
750
2690
3385
1730
5115
England
Scotland
Wales
510
670
345
530
650
125
1040
1320
470
745
875
540
510
455
85
1255
1330
625
1225
1545
885
1040
1105
210
2295
2650
1095
GB Total
1525
1305
2830
2160
1050
3210
3685
2355
6040
England
Scotland
Wales
515
890
370
590
785
150
1105
1675
520
860
1200
745
625
550
100
1485
1750
845
1375
2090
1115
1215
1335
250
2590
3425
1365
GB Total
1775
1525
3300
2805
1275
4080
4580
2800
7380
England
Scotland
Wales
525
1145
400
600
845
190
1125
1990
590
905
1585
890
805
755
185
1710
2340
1075
1430
2730
1290
1405
1600
375
2835
4330
1665
GB Total
2070
1635
3705
3380
1745
5125
5450
3380
8830
FC = Forestry Commission
PW = Private Woodlands
Table II
Conservancy
Forecast of average annual cut of conifer
Roundwood 1987-1991: Forestry Commission forests and
Private woodlands
(Volume: thousands cubic metres overbark)
Small roundwood
Logs
Total
Spruces
Others
Total
Spruces
Others
Total
Spruces
Others
Total
North England
East England
West England
175
45
80
145
295
210
320
340
290
210
35
75
145
390
210
355
425
285
385
80
155
290
685
420
675
765
575
England
North Scotland
Mid Scotland
South Scotland
300
170
160
265
650
300
95
95
950
470
255
360
320
255
260
230
745
210
100
85
1065
465
360
315
620
425
420
495
1395
510
195
180
2015
935
615
675
Scotland
595
490
1085
745
395
1140
1340
885
2225
Wales
235
155
390
290
195
485
525
350
875
1130
1295
2425
1355
1335
2690
2485
2630
5115
GB Total
Table III
Conservancy
Forecast of average annual cut of conifer
Roundwood 1992-1996: Forestry Commission forests and
Private woodlands
(Volume: thousands cubic metres overbark)
Small roundwood
Logs
Total
Spruces
North England
East England
West England
190
60
95
Others
Total
Spruces
Others
Total
145
315
235
335
375
330
225
35
90
150
440
285
405
475
375
Spruces
445
95
185
Others
295
755
520
Total
740
850
705
England
North Scotland
Mid Scotland
South Scotland
345
205
220
345
695
325
115
110
1040
530
335
455
380
265
285
255
875
265
140
120
1255
530
425
375
725
470
505
600
1570
590
255
230
2295
1060
760
830
Scotland
770
550
1230
805
525
1330
1575
1075
2650
Wales
295
175
470
380
245
625
675
420
1095
1410
1420
2830
1565
1645
3210
2975
3065
6040
GB Total
Table IV
Conservancy
Forecast of average annual cut of conifer
Roundwood 1997-2001: Forestry Commission forests and
Private woodlands
(Volume: thousands cubic metres overbark)
Small roundwood
Logs
Total
Spruces
Others
Total
Spruces
Others
Total
Spruces
Others
Total
North England
East England
West England
230
65
100
165
320
225
395
385
325
320
50
105
210
490
310
530
540
415
550
115
205
375
810
535
625
625
740
England
North Scotland
Mid Scotland
South Scotland
395
220
335
505
710
360
110
145
1105
580
445
650
457
280
440
430
1010
310
145
145
1485
590
585
575
870
500
775
935
1720
670
255
290
2590
1170
1030
1225
1060
615
1675
1150
600
1750
2210
1215
3425
345
175
520
510
335
845
855
510
1365
1800
1500
3300
2135
1945
4080
3935
3445
7380
Scotland
Wales
GB Total
Table V
Conservancy
Forecast of average annual cut of conifer
Roundwood 2002-2006: Forestry Commission forests and
Private woodlands
(Volume: thousands cubic metres overbark)
Small roundwood
Logs
Total
Spruces
Others
Total
Spruces
Others
Total
Spruces
Others
Total
North England
East England
West England
280
60
90
180
305
210
460
365
300
390
70
130
235
510
375
625
580
505
670
130
220
415
815
585
1085
945
805
England
North Scotland
Mid Scotland
South Scotland
430
245
445
600
695
375
145
180
1125
620
590
780
590
340
575
670
1120
335
175
245
1710
675
750
915
1020
585
1020
1270
1815
710
320
425
2835
1295
1340
1695
1290
700
1990
1585
755
2340
2875
1455
4330
410
180
590
670
405
1075
1080
585
1665
2130
1575
3705
2845
2280
5125
4975
3855
8830
Scotland
Wales
GB Total
Download