| Vällen 1945 | Vällen 1999 | Change | |||||
| Summary of statistics | Area (hectares) | % | AREA(ha) | % | AREA(ha) | % of all the area/region | % of the occurrence 1945 |
| All Vällen area | 6,132 | ||||||
| Sum of forests with trees over 110 years | 1,727 | 28 | 627 | 10 | -1,100 | -18 | -64 |
| Sum of adult swamp forests | 353 | 6 | 260 | 4 | -93 | -2 | -26 |
| Sum of heaths and graze lands | 194 | 3 | 19 | 0 | -175 | -3 | -90 |
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The maps show the distribution of old forests, swamp forests, grasslands and fields during the 1940’s (left) and 1990’s (right). The interpretation was performed in CIR-photos and black and whites. Within this project a similar study was done in the Länna area. As a result the files delivered show the change in area between the time periods. The Foundation of Uppland was financing the project. (See the same study in the Länna – area with larger images.) |  |
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