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A high spatial resolution woody cover map for Great Britain: preliminary results

Tebbs, Emma; Rowland, Clare. 2014 A high spatial resolution woody cover map for Great Britain: preliminary results. In: RSPSoc 2014, Aberystwyth, 2-5 Sept 2014.

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Abstract/Summary

Small-scale woody features such as hedgerows and small patches of trees provide valuable ecosystem services and are important for biodiversity conservation. However, there is currently no dataset available for mapping these features at a national scale. A product has been developed for mapping these features which combines airborne radar data (NEXTMap®) and optical imagery from satellites. The NEXTMap® DIFF product provides canopy height information at 5 x 5 m spatial resolution and this dataset was used to identify ‘tall’ features in the landscape. NDVI imagery was then used to separate tall vegetation from other tall features such as buildings and rocky outcrops. This method was successful in identifying small-scale woody features but worked less well for large areas of woodland. Therefore, these larger areas were filled in using the Land Cover Map 2007 dataset to produce the final woody features product with a binary (woody/non-woody) classification at a 5 x 5 m spatial resolution. The product was verified against aerial photography and initial results are promising. Work is ongoing to refine the classification and to produce a woody features map for the whole of Great Britain. This product has numerous potential applications, including investigations of habitat connectivity, catchment run-off processes and quantification of carbon stocks.

Item Type: Publication - Conference Item (Paper)
CEH Sections: Parr
NORA Subject Terms: Ecology and Environment
Date made live: 18 Mar 2015 14:08 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/510175

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