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Change detection of mountain birch using multi-temporal ALS point clouds
Responsible organisation
2013 (English)In: Remote Sensing Letters, Vol. 4, no 2, p. 190-199Article in journal (Refereed) Published
Abstract [en]

The use of multi-temporal laser scanner data is potentially an efficient method for monitoring of vegetation changes, for example, at the alpine treeline. Methods for relative calibration of multi-temporal airborne laser scanning (ALS) data sets and detection of experimental changes of tree cover in the forest–tundra ecotone was tested in northern Sweden (68° 20′ N, 19° 01′ E). Trees were either partly or totally removed on 6 m radius sample plots to simulate two classes of biomass change. Histogram matching was successfully used to calibrate the laser metrics from the two data sets and sample plots were then classified into three change classes. The proportion of vegetation returns from the canopy was the most important explanatory variable, which provided an overall accuracy of 88%. The classification accuracy was clearly dependent on the density of the forest.

Place, publisher, year, edition, pages
Taylor & Francis , 2013. Vol. 4, no 2, p. 190-199
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Natural Sciences
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URN: urn:nbn:se:polar:diva-4242DOI: 10.1080/2150704X.2012.714087OAI: oai:DiVA.org:polar-4242DiVA, id: diva2:1180288
Available from: 2018-02-05 Created: 2018-02-05 Last updated: 2019-02-04Bibliographically approved

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Publisher's full texthttps://doi.org/10.1080/2150704X.2012.714087
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