Presentation on theme: "Overview at the European scale of potential impacts of TEN-T axes on core areas of nature protection and landscape connectivity – neighbourhood analysis."— Presentation transcript:
Overview at the European scale of potential impacts of TEN-T axes on core areas of nature protection and landscape connectivity – neighbourhood analysis EEA/BSS2/JLW 1 June 2006 Provisional results
The purpose of the study is the identification of possible impacts of TEN-T Extension Axis on: - core areas of nature protection and - fragmentation of ecological background landscape (so-called green landscape). The methodology combines local measurements and neighbourhood analysis for both protected areas and green landscape features, favourable to connectivity (pasture and mosaic agriculture, forests, semi-natural and natural dryland and wetlands). For each pixel of the maps, neighbouring values (in a span of 5 km and divided by the square of the distance to the pixel) are added to the central value; then the result is expressed as a %. By doing so, patches are converted to an index of the probability to meet them in a given place. A consumption of these values by the TEN-Taxes has been computed, with 10 km and 2 km buffers. This warns about the importance of the risk of meeting either protected areas or green landscape (or both). Assessment at the macro-scale by spatial analysis; possible local conflicts with small important protected areas may not all be detected at the scale of the study. These maps are a warning and aim at sketching possible conflict areas. Sources of data are of uneven quality, in particular in Eastern Europe where the full analysis has not been possible. At the same time, the available data relate to axes and not to precise projects. Impact intensity indexes mean the probability that a transport infrastructure hits or come in a close contact of an important piece of nature. The threshold values of these need to be agreed upon; the conventional threshold values on the maps are 25% for the impact on protected nature and 50% for the consumption of green landscape. Other values can be tested. Present results remain indicative.
TEN-T extension and nature: overview Priority & Multimodal axes, Green Landscape and Core areas of nature protection
TEN-T (10 km buffer) Overview of main sectors of fragmentation of green landscape
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