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The Green Belt as a European Ecological Network strengths and gaps

The Green Belt as a European Ecological Network strengths and gaps

Hans-Jörg Raderbauer,

Hans-Jörg Raderbauer, Judith Drapela-Dhiflaoui, Brigitte Grießer, Martin Wieser, Horst Leitner, Johannes Leitner STUDY ON HABITAT NETWORKING IN STYRIA (AUSTRIA) / DEVELOPED WITHIN THE FRAMEWORK OF NATREG Figure: Styrian regions 66 � Alpine area (grey) � Alpine urban zones (orange) � Central urban zone (red) � Alpine – and non-alpine valleys (green) � Ridges / Hills (yellow) Sectoral Processing The principles and objectives are based in the Styrian Spatial Planning Act (STROG 2010) as analysis and definition of green zones and habitat corridors. The high-quality areas in the four sectors are determined by GIS analysis. The presentation of the sectoral results are be shown in sectoral value cards (e.g. a map of the ecological value). Figure: Sectoral results To demarcate the green zones and habitat corridors, it is necessary to upgrade or devalue the identified ranges of values according to the pressure of utilization. This is done by

Hans-Jörg Raderbauer, Judith Drapela-Dhiflaoui, Brigitte Grießer, Martin Wieser, Horst Leitner, Johannes Leitner STUDY ON HABITAT NETWORKING IN STYRIA (AUSTRIA) / DEVELOPED WITHIN THE FRAMEWORK OF NATREG means of a crosstable in which the sectoral values are set in spatial relationship to the subspaces, and thus report a sectoral green zone requirement. GIS-modeling The model was designed in that way that it can be used with input data of different scales, since the required input data are available in different levels of quality. The quality of the result based on the homogeneity and quality of data input. The larger the scale of the input data and more current and interdisciplinary input data is available, the more accurate are the results, the maximum required output scale should not be exceeded. The result of the Styrian part of the project is mapped as a grid 100x100m with the focus on an issue scale of 1:50,000. 6 SYNTHESIS OF SECTORAL RESULTS Considering the diverse sub-regions of Styria, each of the four sectors has a “sectoral green zone demand”. The results are illustrated in a 100x100 m raster map with consistent coding. By using raster analysis and reclassifications of sectoral results, a synthesis raster with a comprehensive overall appraisal is compiled. By using a comprehensive coding – similar to the Austrian Forest Development Plan – sectoral values can be identified for each raster cell, respective subspace, of the overall result. The technical basis for the determination of green zones and living space corridors results from the respective subspace which at least contains 1 x 3 respectively 2 x 2 in its coding. 0 = no need for action at this time 1 = no demand for green zone/corridor at this time 2 = relevant if multiple functions occur 3 = sectoral demand for green zone/corridor example of cell-value = 2301 ecology = 2 wildlife = 3 recreation = 0 common benefit = 1 Figure: Synthesis – encoding of sectoral information Green zones & corridors (1 x 3 or 2 x 2) Basis for regional spatial planning 67

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The Green Belt as a European Ecological Network strengths and gaps
The Green Belt as a European Ecological Network strengths and gaps
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