6. Tissoe

The pilot area Tissoe is located in the western part of Zealand and covers an area of 5256 ha. A large part of the area is located within the administrative borders of the municipality of Kalundborg and a smaller part belongs to Soroe municipality. The area is delineated by the water catchment of the lake. The Tissoe pilot area includes the entire Tissoe (lake) and represents the pilot area which includes most nature outside agriculture in terms of water, forest, and open nature followed by Varde pilot area. The large nature area mainly covers the big lake but also the bog-basins and forest patches in the northern part. Moreover, the area inhabits the smallest intensive agricultural area followed by Varde. The soil is mainly composed of clayey soils with organic soils covering most of the area at the wetlands towards the north. The terrain is highly varying which also reflects the varied land use.

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Map: Geographical location of the pilot area at Tissoe.

LAND USE

Despite the large nature area outside agriculture in the Tissoe area (43 %) the primary land use is agriculture (47.7 %) of which 41.9 % is intensive (map and table). The large nature area is mainly due to the large lake and the bog-basins in the northern part of the area. Intensive agriculture is surrounding the nature areas and is interrupted by urban areas which covers 7.4 %. Tissoe represents the pilot area with the smallest fraction of agriculture and largest fraction of nature outside agriculture of all pilot areas (figure).

Land use is illustrated on the map and the belonging table for Tissoe below. Furthermore, land use for the 7 pilot areas is illustrated in the figure.

Map: Land use of the pilot area Tissoe in 10×10 meters resolution.

Table: Land use of the pilot area at Tossoe in hectare (ha) and share of the total area in percent (%).

Figure: Land use in the 7 pilot areas described as share of total area in percent (%). The pilot areas are listed to % agriculture.
SOIL

Overall the western soils of Denmark contain a high sand percentage whereas the eastern parts are dominated by the more heavy soils – clay (map 1). Tissoe is located in western Zealand and is also dominated by the more clayey soils (65 %) (table). The northern part of the area is dominated by organic soils/humus (end product of dead organic material) due to the large wetland. Hereby, Tissoe represents the pilot area with the highest humus percentage (15.6 %).

The soil types of the pilot area are illustrated on map 2 and the belonging table below.

Map 1: Soil in Denmark.

Map 2: Distribution of soil types in the pilot area Tissoe in 30.4×30.4 meters resolution.

Table: Distribution of soil types in the pilot area Tissoe in hectare (ha) and share of the total area in percent (%).

TOPOGRAPHY

The elevation in Tissoe varies from 1 to 96 meters above the sea level (map 1) and the slope of the terrain from 0 to 12 degrees (map 2). Hereby, Tissoe represents a relatively hilly terrain. This is especially pronounced east from the lake and near the wetland in the northern parts.

Map 1: Elevation in Denmark (a) and in the pilot area Tissoe (b) in 48×48 meters resolution.

Map 2: Slope of the terrain in Denmark (a) and in the pilot area Tissoe (b) in 48×48 meters resolution.

HYDROLOGY

Wetness is here illustrated by the topographical wetness index. The wetness index calculates how much water a given point in the terrain potential can receive (the size of the catchment) in relation to its ability to drain itself (slope of the terrain). The index expresses the ability of the point to accumulate water. It is based alone on placement of the point in the terrain and the shape of the terrain, and does not include other factors such as soil type, precipitation, etc.

The pilot area is delineated by the Tissoe water catchment. The area is relatively wet as illustrated by the lake and the large wetland.

Map: Topographical wetness index in Denmark (a) and in the pilot area Tissoe (b) in 48×48 meters resolution.