Outdoor Land Values in beach protection zones
The work is described in the report –
“Mapping of land value assessment of beach protection zones for Dalälven in the municipality Älvkarleby”
Swedish version available for download here (a Word file of about 2 Mb) or open here as pdf
Summary (from the report)
Älvkarleby municipality wish a GIS analysis showing where there are high values for outdoor activities in the 300-meter zone around Dalälven. In this project processed natural land (as opposed to developed land) of various recreational value and to varying degrees are available for outdoor activities.
More specifically, the mapping (as previously supplied mapping; NaturGIS 2011) in principle, only the land side of the 300-meter beach protection zone and which are not exploited. Most beach protected islands is not mapped. Outdoor Recreation analysis has been conducted as a further processing of the GIS database that was delivered to the municipality in 2011. The database consists of over 50 map layers of which about 15 layers are added to outdoor soil analysis described in this report. In various rounds of project design were discussed and views collected by local knowledgeable people.
Various components / map layers developed as map layers in the database. It is “Availability / Potential utilization” (based on buffering with different distance of the built-up areas and roads), “Land with limited availability” (nykarterat or the habitat layer), “Accessibility (developed from the habitat, forest age and soil type),” Famous outdoor life motifs “(selected with the help of referees),” Areas rich in berries and edible mushrooms “(is developed as a GIS analysis based on habitat, forest age and soil type),” where scenery “(developed in a GIS analysis based the habitat and forest age) and “Paths, footpath and cycle path” (the areas traversed by the path / direction according to the municipality’s primary map or property map).
Mapping reported in 2011 has also been updated from modern aerial; “Forest Age date from IRF orthophotos 2015” (age2015) and “Building land date from IRF orthophotos 2015”). Tomt2015 complements map layer “developed land” and outdoor soil results have been limited to those parts of the 300-meter riparian zone that is not exploited. Moreover, the “Quaternary” (developed as part of the basis for the “Accessibility” and “Areas rich in berries and edible mushrooms.”
The method has been developed and streamline the various outdoor components to then put these together in the map layer total for outdoor recreation. The total value of outdoor recreation ground (fr_val) is the result of pancaking of recreational land components, each of which received a maximum two to three points. Finally, the added values of fritidsmarkskomponterna evenly distributed in the range of 0 to 10 points.
Nature Values in beach protection zones
The work is described in the report –
“Mapping of natural value assessment of beach protection zones for Dalälven in the municipality Älvkarleby”
Swedish version available for download here (a Word file of about 4 Mb) or open here as pdf
Summary (from the report)
A main objective of the project is to evaluate the natural value in the 300-meter beach protection zone to the Dalälven River in Älvkarleby, to then be able to describe the extent to which the municipality proposed LIS areas taking of valuable natural areas.
The mapping is conducted using the stereo interpretation of digital infrared color images in a digital system photogrammetrically. Natura 2000 habitats, other valuable habitats, forests age and restoration object with respect to grasslands and river brink in beach protection zone has been mapped. Timeliness is 2005, but obvious clearings have been mapped in the satellite image from 2009. As the basis of data used property map and the primary map worked together with other map data that shows famous natural value items, such as disclosure of protected areas, key habitats, county administrative point database and the nature database of Älvkarleby.
Natural types have been potential nature value and a current natural value for each surface has been developed based on the “recovery percent,” which can be said to reflect conservation (where forests age and overgrowing degree of grasslands are important parameters). Surfaces with the condition, which is included in the Meadow and pasture inventory, located in river brink or that contain protected species from the field inventories have received additional natural value points. Natural value points “6” and above are considered to have high conservation value.
Digital maps of habitats, conservation credits, protection values mm and statistics showing the area of the charted has been developed: a total of 33 map layers located in the map database. Statistics showing the LIS regions’ share of habitats and natural values have also been developed. LIS areas represent 117.2 ha (5.2%) of beach protection zone. The cumulative weighted nature of the value of the total LIS areas are very similar to the natural values of the entire beach protection zone, but this natural value is exceeded, also marked for the number of LIS areas. Six LIS areas are predominantly high natural values, six have high conservation value or key habitats in parts of the area and three are predominantly low conservation value. One of the latter concern, however, in smaller parts of high conservation value that are also key items.
The map database provides good opportunity for a conservation-minded and better planning of the waterfront area to the Dalälven. On the basis of this inventory and a modified land consolidation of LIS areas, areas with high natural avoided.
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The pictures below show a section of Älvkarleö Dalälven. Picture 1 the top left is a clip from a digital infrared aerial Picture 2 top right is a clip from the map database with the colored Picture 3 in the middle row on the right is the legend of the mapped habitat types (eg Figure 2). Picture 4 middle row on the left is the nature valuation (based on types of nature value, Picture 5 bottom left is the legend to Fig 4th |
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