Mapping of coniferous lime forests

Mapping of coniferous lime forests (see definitions and differentiating species). The mapping was made in northern Uppland coastal areas from Älvkarleby to Gräsö on mission by the Swedish Forest Agency in Mälardalen and the County Administrative board in Uppland. What have been interpreted though are herb rich coniferous forests in lime rich areas. Coniferous lime forests cannot be separated from herb rich coniferous forests in the infra red colour photos. In another project (financed by the County Administrative Boars in Stockholm) coniferous lime forests and coniferous sandy forests within Norrtälje were mapped. “In relation to the Swedish Forest Agency’s concentrated work on mapping key habitats, a perspicuous interpreting material of stands worth visiting, is needed for the field season 2003. Because herb rich coniferous forests (coniferous lime forests) regionally are very important key habitats, but needs extensive interpreting knowledge and experience to be found in aerial photos, this project has been suggested to be given to a professional company with great knowledge in vegetation interpreting”. (From the mission directory) A preliminary investigation has shown a very high level of accuracy in the interpretation.
  Red lines outline mapped herb rich forests. Green surfaces are key objects. Green lines marks areas under investigation for possible reserve status. Within these herb rich coniferous forests wasn’t supposed to be interpreted. The background photo is the panchromatic layer in the Landsatscen from June 2001. The methodology is described here. Overviews of the results are shown here. (0.6 Mb, JPG)
An analysis of over aged herb rich forests and coniferous sandy forests has been performed in the vegetation map data base of Västmanland County on mission by the County Administrative Board. Statistics are shown below and an overview of the results (north-east part of the county) is shown here.
AREA (ha) Municipality Forest type Age
231.3 Arboga HERB RICH FOREST – normal trees 110 – 130 years
20.6 Arboga HERB RICH FOREST – normal trees over 130 years
7.3 Arboga HERB RICH FOREST – humid trees 110 – 130 years
3.5 Arboga HERB RICH FOREST – dry trees 110 – 130 years
1,910.8 Arboga Remaining old forest trees 110 – 130 years
230.3 Arboga Remaining old forest trees over 130 years
39,736.4 Arboga Remaining municipality  
42,140.3      
       
22.7 Fagersta HERB RICH FOREST – normal trees 110 – 130 years
0.2 Fagersta HERB RICH FOREST – humid trees 110 – 130 years
2.1 Fagersta SANDY FOREST – lichen / lichen brush trees 110 – 130 years
2,485.7 Fagersta Remaining old forest trees 110 – 130 years
76.9 Fagersta Remaining old forest trees over 130 years
28,599.5 Fagersta Remaining municipality  
31,187.1      
       
42.5 Hallstaham HERB RICH FOREST – normal trees 110 – 130 years
5.0 Hallstaham HERB RICH FOREST – normal trees over 130 years
7.1 Hallstaham HERB RICH FOREST – humid trees 110 – 130 years
9.3 Hallstaham SANDY FOREST – dry brush type trees 110 – 130 years
2.0 Hallstaham SANDY FOREST – dry brush type trees over 130 years
499.4 Hallstaham Remaining old forest trees 110 – 130 years
1.0 Hallstaham Remaining old forest trees over 110 years (Västerås)
179.4 Hallstaham Remaining old forest trees over 130 years
17,438.2 Hallstaham Remaining municipality  
18,183.9      
       
593.7 Heby HERB RICH FOREST – normal trees 110 – 130 years
117.6 Heby HERB RICH FOREST – normal trees over 130 years
145.3 Heby HERB RICH FOREST – humid trees 110 – 130 years
17.1 Heby HERB RICH FOREST – humid trees over 130 years
0.6 Heby SANDY FOREST – lichen / lichen brush trees 110 – 130 years
8.0 Heby SANDY FOREST – dry brush type trees 110 – 130 years
13.1 Heby SANDY FOREST – dry brush type trees over 130 years
4,696.3 Heby Remaining old forest trees 110 – 130 years
747.5 Heby Remaining old forest trees over 130 years
117,146.4 Heby Remaining municipality  
123,485.6      
       
112.6 Kungsör HERB RICH FOREST – normal trees 110 – 130 years
19.7 Kungsör HERB RICH FOREST – normal trees over 130 years
8.4 Kungsör HERB RICH FOREST – humid trees 110 – 130 years
1.4 Kungsör HERB RICH FOREST – humid trees over 130 years
7.8 Kungsör SANDY FOREST – dry brush type trees 110 – 130 years
872.9 Kungsör Remaining old forest trees 110 – 130 years
152.4 Kungsör Remaining old forest trees over 130 years
21,608.0 Kungsör Remaining municipality  
22,783.2      
       
148.8 Köping HERB RICH FOREST – normal trees 110 – 130 years
14.4 Köping HERB RICH FOREST – normal trees over 130 years
1.1 Köping HERB RICH FOREST – humid trees 110 – 130 years
3,303.6 Köping Remaining old forest trees 110 – 130 years
157.8 Köping Remaining old forest trees over 130 years
61,506.8 Köping Remaining municipality  
65,132.6      
       
68.8 Norberg HERB RICH FOREST – normal trees 110 – 130 years
20.3 Norberg HERB RICH FOREST – normal trees over 130 years
5.8 Norberg HERB RICH FOREST – humid trees 110 – 130 years
2,628.5 Norberg Remaining old forest trees 110 – 130 years
158.7 Norberg Remaining old forest trees over 130 years
42,170.8 Norberg Remaining municipality  
45,052.9      
       
535.0 Sala HERB RICH FOREST – normal trees 110 – 130 years
41.7 Sala HERB RICH FOREST – normal trees over 130 years
43.6 Sala HERB RICH FOREST – humid trees 110 – 130 years
11.9 Sala SANDY FOREST – lichen / lichen brush trees 110 – 130 years
21.1 Sala SANDY FOREST – dry brush type trees 110 – 130 years
10.1 Sala HERB RICH FOREST – dry trees 110 – 130 years
4,202.3 Sala Remaining old forest trees 110 – 130 years
231.4 Sala Remaining old forest trees over 130 years
115,850.2 Sala Remaining municipality  
120,947.3      
       
303.1 Skinnskatt HERB RICH FOREST – normal trees 110 – 130 years
15.1 Skinnskatt HERB RICH FOREST – normal trees over 130 years
8.2 Skinnskatt HERB RICH FOREST – humid trees 110 – 130 years
1.8 Skinnskatt SANDY FOREST – lichen / lichen brush trees 110 – 130 years
15.2 Skinnskatt SANDY FOREST – dry brush type trees 110 – 130 years
2,278.1 Skinnskatt Remaining old forest trees 110 – 130 years
159.5 Skinnskatt Remaining old forest trees over 130 years
69,552.2 Skinnskatt Remaining municipality  
72,333.2      
       
27.8 Surahammar HERB RICH FOREST – normal trees 110 – 130 years
4.0 Surahammar HERB RICH FOREST – normal trees over 130 years
23.1 Surahammar SANDY FOREST – dry brush type trees 110 – 130 years
4.4 Surahammar SANDY FOREST – dry brush type trees over 130 years
1,616.2 Surahammar Remaining old forest trees 110 – 130 years
128.6 Surahammar Remaining old forest trees over 130 years
35,028.0 Surahammar Remaining municipality  
36,832.2      
       
0.5 Västerås HERB RICH FOREST – normal trees 110 – 130 years
600.8 Västerås HERB RICH FOREST – normal trees over 110 years (Västerås)
30.7 Västerås HERB RICH FOREST – humid trees over 110 years (Västerås)
2.8 Västerås Remaining old forest trees 110 – 130 years
2,836.7 Västerås Remaining old forest trees over 110 years (Västerås)
110,855.4 Västerås Remaining municipality 0
114,326.8      
       
       
692,405.0 All County    
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