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Nitrogen deposition for selected natural areas for 2007

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Here are results from calculations of deposition of nitrogen to selected natural areas for the year 2007.

A portion of the deposition occurs in the form of dry deposition of ammonia. Carried out detailed calculations for this part using model OML-DEP. The model calculates the deposition of ammonia to an area at 16 km x 16 km around the selected scenery area. The sources of ammonia emissions are largely local agriculture.

The spatial resolution in connection with calculations is on 400 m x 400 m.

Inputs to the model are inter alia: detailed emission inventories with a spatial resolution of 100 m x 100 m. in addition, the model coupled to regional-scale models, which supplies OML-DEP with information about "background level" of ammonia. Background contribution includes ammonia from sources outside the field of 16 km x 16 km.

For 2007 are the calculations made for the areas set out in the table below.

You can view detailed maps of  the dry deposition of ammonia to these selected areas (in danish). The cards are assembled into a document in pdf format (NB! file is very large, about. 6 MB).

Note that the deposition derived from ammonia as shown on the maps represent only a small part of the total nitrogen deposition. To find the total nitrogen deposition , it showed contributions from ammonia are added together with other contributions. These other contributions relates to deposition of non local nitrogen components and can again be divided in two parts: the dry deposition of nitrogen feisty and particle bound nitrogen and wet deposition of nitrogen. The table below gives an overview of the range of the 3 contributions.

Annual kvælstofdeposition (kg N/ha) to selected Danish sites and natural habitats intended for 2007 with DAMOS system. The values indicate the average deposition to the 400 m x 400 m field that is centrally located in the natural area and therefore indicates deposition to the Habitat, covering this field. The table indicates the tørdepositionen of ammonia designed with local-scale model OML-DEP, as well as the rest of the dry-and vådde position of nitrogen calculated with regional-scale model DEEM.

 

Location

 

Natural type

 

NH3-N dry-
deposition

 

Other dry-
deposition

 

Wet-
deposition

 

Total
deposition

Anholt

Grass

1

3

6

10

Frederiksborg

Coniferous forest

2

9

6

17

Keld leash

Agriculture

2

3

8

13

Lindet

Coniferous forest

5

7

9

21

Tange

Deciduous forest

5

7

8

20

Ulborg

Coniferous forest

4

6

7

17

Idom Heath

Heath (4030)

3

2

7

12

Helmet Heath

Heath (4030)

2

2

8

12

Diesebjerg

Over drive (6230)

2

3

7

13

Ovstrup Heath

Heath (4030)

2

2

8

12

Husby

Coastal Dune (2130)

1

2

8

11

La Grange Moor

Heath (4010, 4030)

2

2

8

12

Bisgyde

Over drive (6230)

2

2

7

12

An historical

Rigkær (7220, 7230)

4

2

7

13

Hammer Bakker

Heath (4030)

2

2

8

12

Holmkær

Salt Marsh (1330)

2

2

7

11

Ulvshale

Coastal Dune (2250)

2

3

7

12

Storelung

Raised bog (7110)

4

2

7

13

Nybo Bog

Raised bog (7110)

3

2

9

14

Helmpolde

Heath (4010, 4030)

3

2

9

14

Randbøl Hede

Heath (4030)

2

2

8

12

Peder Beings (Raghammer)

Heath (4030)

2

4

6

11

Kaas Forest

Deciduous forest (9190)

4

10

7

21

Beech forest v. Sorø

Deciduous forest (9130)

3

10

7

20

Beech forest v. Maribo Lakes

Deciduous forest (9130)

3

9

9

20

Råbjerg Bog

Transition mires (7140)

3

3

5

11