Forest Biodiversity in Sweden

Transcription

1 Forest Biodiversity in Sweden Sören Wulff Department of Forest Resource Management

2 Tract distribution One year sample Design of Swedish NFI Department of Forest Resource Management,

3 BioSoil program European cooperative program ICP-forest level I Based on a selection of NFI permanent sample plots Region North mountain Grid : 32 x 32 km Region North Grid: 32 x 16 km Region south Grid: 16 x 16 km Permanent plots: nearest NFI permanent sample plot fitting into the grid. Department of Forest Resource Management,

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5 Tree species composition Standing volume for different tree species for the years Productive forest land. Excluding protected areas within National Parks, Nature Reserves and Nature Protection Areas.

6 Tree species composition Timber volume for different tree species for the years Productive forest land. Excluding protected areas within National Parks, Nature Reserves and Nature Protection Areas.

7 Area distribution of tree species Area distribution of single tree species ( 7/10 basal area) and mixed stands for the years Productive forest land. Excluding protected areas within National Parks, Nature Reserves and Nature Protection Areas.

8 Tree species diversity Proportion of area with 1 alt. 3 tree species per sample plot. Forest land, maturity class C-D (Permanent, undivided sample plots) Source: HTO/Swedish NFI

9 Standing volume for the years All land use classes. Excluding protected areas within National Parks, Nature Reserves and Nature Protection Areas. Average values for the first two inventories ( and ) thereafter moving five year average.

10 Standing volume for trees 45cm DBH by regions and for the years Productive forest land. Excluding protected areas within National Parks, Nature Reserves and Nature Protection Areas. Moving five year average.

11 Area of old forest for the years Productive forest land. Excluding protected areas within National Parks, Nature Reserves and Nature Protection Areas. Moving five year average.

12 Old forest as a proportion of productive forest land for the years Excluding protected areas within National Parks, Nature Reserves and Nature Protection Areas according to 2006 boundaries. Old forest defined as >140 years in the Boreal region and >120 years in the Boreonemoral and Nemoral region.

13 Older, broadleaved rich forest as a proportion of productive forest land for the years Excluding protected areas within National Parks, Nature Reserves and Nature Protection Areas according to 2006 boundaries. Definition of broadleaved rich >3/10 of basal area (where mean stand height >7m) or 3/10 of number of stems (where mean stand height <7m). Definition of older: >80 years in the Boreal region and >60 years in the Boreonemoral and Nemoral region.

14 Area of older broadleaved rich forest for the years Productive forest land. Excluding protected areas within National Parks, Nature Reserves and Nature Protection Areas. Moving five year average ha. Definition of broadleaved rich >3/10 of basal area (where mean stand height >7m) or 3/10 of number of stems (where mean stand height <7m).

15 Volume dead wood for the years Dead wood within protected areas and deadwood by tree species and region.

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17 From the 1st NFI an average value and from 1953 moving five year average.

18 Thank you for your attention! Department of Forest Resource Management