FO18 Prescribed burning
Prescibed burning refers to intentional burning of logging residues and forest floor after a regeration felling. A controlled fire creates good environmental conditions for the creation and growth of seedling stands. Prescribed burning is most suitable for mineral soil sites while peatlands are not burned.
Forest fires are uncontrolled fires in forested landscapes. These occur both naturally as ignited by lightning and because of human activities, mainly carelesness in handling fire.
A) Prescribed burning in regeneration areas (hectares)
Year |
Annual |
Cumulative |
Year |
Annual |
Cumulative |
Year |
Annual |
Cumulative |
||
1950 |
4 300 |
4 300 |
1971 |
500 |
334 900 |
1992 |
2 000 |
372 100 |
||
1951 |
4 500 |
8 800 |
1972 |
500 |
335 400 |
1993 |
1 000 |
373 100 |
||
1952 |
7 400 |
16 200 |
1973 |
700 |
336 100 |
1994 |
1 700 |
374 800 |
||
1953 |
15 400 |
31 600 |
1974 |
800 |
336 900 |
1995 |
1 400 |
376 200 |
||
1954 |
17 700 |
49 300 |
1975 |
300 |
337 200 |
1996 |
900 |
377 100 |
||
1955 |
33 400 |
82 700 |
1976 |
600 |
337 800 |
1997 |
1 000 |
378 100 |
||
1956 |
32 400 |
115 100 |
1977 |
1 900 |
339 700 |
1998 |
600 |
378 700 |
||
1957 |
27 900 |
143 000 |
1978 |
700 |
340 400 |
1999 |
1 300 |
380 000 |
||
1958 |
34 800 |
177 800 |
1979 |
900 |
341 300 |
2000 |
472 |
380 500 |
||
1959 |
27 000 |
204 800 |
1980 |
1 600 |
342 900 |
2001 |
2 286 |
382 800 |
||
1960 |
18 500 |
223 300 |
1981 |
500 |
343 400 |
2002 |
2 010 |
384 800 |
||
1961 |
13 900 |
237 200 |
1982 |
1 600 |
345 000 |
2003 |
1 343 |
386 100 |
||
1962 |
14 600 |
251 800 |
1983 |
1 400 |
346 400 |
2004 |
216 |
386 300 |
||
1963 |
32 900 |
284 700 |
1984 |
1 800 |
348 200 |
2005 |
1 065 |
386 400 |
||
1964 |
16 300 |
301 000 |
1985 |
3 500 |
351 700 |
2006 |
1 032 |
388 400 |
||
1965 |
13 800 |
314 800 |
1986 |
3 200 |
354 900 |
2007 |
477 |
388 900 |
||
1966 |
10 600 |
325 400 |
1987 |
1 000 |
355 900 |
2008 |
434 |
389 300 |
||
1967 |
4 900 |
330 300 |
1988 |
5 500 |
361 400 |
2009 |
691 |
390 000 |
||
1968 |
2 200 |
332 500 |
1989 |
3 500 |
364 900 |
2010 |
174 |
390189 |
||
1969 |
1 000 |
333 500 |
1990 |
3 800 |
368 700 |
2011 |
572 |
390 761 |
||
1970 |
900 |
334 400 |
1991 |
1 400 |
370 100 |
B) Forest fires (hectares)
Year |
Number of fires |
Burned area |
Year |
Number of fires |
Burned area |
|
1970 |
550 |
3024 |
1991 |
287 |
226 |
|
1971 |
557 |
762 |
1992 |
852 |
1081 |
|
1972 |
581 |
1032 |
1993 |
940 |
||
1973 |
1095 |
1301 |
1994 |
1115 |
798 |
|
1974 |
331 |
450 |
1995 |
1115 |
526 |
|
1975 |
601 |
719 |
1996 |
1487 |
437 |
|
1976 |
510 |
543 |
1997 |
1588 |
1146 |
|
1977 |
296 |
345 |
1998 |
371 |
132 |
|
1978 |
491 |
801 |
1999 |
1546 |
623 |
|
1979 |
430 |
544 |
2000 |
826 |
266 |
|
1980 |
694 |
774 |
2001 |
822 |
187 |
|
1981 |
171 |
202 |
2002 |
2526 |
590 |
|
1982 |
504 |
513 |
2003 |
1734 |
666 |
|
1983 |
271 |
100 |
2004 |
816 |
358 |
|
1984 |
464 |
301 |
2005 |
1069 |
495 |
|
1985 |
502 |
238 |
2006 |
3046 |
1617 |
|
1986 |
717 |
367 |
2007 |
1204 |
576 |
|
1987 |
285 |
153 |
2008 |
1456 |
830 |
|
1988 |
621 |
289 |
2009 |
1242 |
576 |
|
1989 |
617 |
518 |
2010 |
1412 |
520 |
|
1990 |
559 |
434 |
2011 |
1262 |
589 |
Links:
Forest information services by Finnish Forest Research Institute (Metla).
References:
Engelmark, O. 1999. Boreal forest disturbances. In: Walker, L. R. (ed.), Ecosystems of Disturbed Ground. P. 161-186. Ecosystems of the World 16. Elsevier. Amsterdam.
Wallenius, T. 2004. Fire histories and tree ages in unmanaged boreal forests in Eastern Fennoscandia and Onega peninsula. PhD-thesis. University of Helsinki.