Testing the utility of structure from motion photogrammetry reconstructions using small unmanned aerial vehicles and ground photography to estimate the extent of upland soil erosion

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dc.contributor.authorGlendell, Miriam
dc.contributor.authorMcShane, Gareth
dc.contributor.authorFarrow, Luke
dc.contributor.authorJames, Mike R.
dc.contributor.authorQuinton, John Norman
dc.contributor.authorAnderson, Karen
dc.contributor.authorEvans, Martin
dc.contributor.authorBenaud, Pia
dc.contributor.authorRawlins, Barry
dc.contributor.authorMorgan, David
dc.contributor.authorJones, Lee
dc.contributor.authorKirkham, Matthew
dc.contributor.authorDeBell, Leon
dc.contributor.authorQuine, Timothy
dc.contributor.authorLark, Murray
dc.contributor.authorRickson, R. Jane
dc.contributor.authorBrazier, Richard E.
dc.date.accessioned2017-03-22T12:53:45Z
dc.date.available2017-03-22T12:53:45Z
dc.date.issued2017-03-08
dc.description.abstractQuantifying the extent of soil erosion at a fine spatial resolution can be time consuming and costly; however, proximal remote sensing approaches to collect topographic data present an emerging alternative for quantifying soil volumes lost via erosion. Herein we compare terrestrial laser scanning (TLS), and both aerial (UAV) and ground-based (GP) SfM derived topography. We compare the cost-effectiveness and accuracy of both SfM techniques to TLS for erosion gully surveying in upland landscapes, treating TLS as a benchmark. Further, we quantify volumetric soil loss estimates from upland gullies using digital surface models derived by each technique and subtracted from an interpolated pre-erosion surface. Soil loss estimates from UAV and GP SfM reconstructions were comparable to those from TLS, whereby the slopes of the relationship between all three techniques were not significantly different from 1:1 line. Only for the TLS to GP comparison the intercept was significantly different from zero, showing that GP is more capable of measuring the volumes of very small erosion features. In terms of cost-effectiveness in data collection and processing time, both UAV and GP were comparable with the TLS on a per-site basis (13.4 and 8.2 person-hours versus 13.4 for TLS); however GP was less suitable for surveying larger areas (127 person-hours per ha-1 versus 4.5 for UAV and 3.9 for TLS). Annual repeat surveys using GP were capable of detecting mean vertical erosion change on peaty soils. These first published estimates of whole gully erosion rates (0.077 m a-1) suggest that combined erosion rates on gully floors and walls are around three times the value of previous estimates, which largely characterise wind and rainsplash erosion of gully walls.en_UK
dc.identifier.citationMiriam Glendell et al. Testing the utility of structure from motion photogrammetry reconstructions using small unmanned aerial vehicles and ground photography to estimate the extent of upland soil erosion. Earth Surface Processes and Landforms, Available on 8 March 2017en_UK
dc.identifier.issn0197-9337
dc.identifier.urihttp://dx.doi.org/10.1002/esp.4142
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/11639
dc.language.isoenen_UK
dc.publisherWileyen_UK
dc.rightsAttribution-NonCommercial 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.subjectsoil erosion monitoringen_UK
dc.subjectSfM photogrammetryen_UK
dc.subjectupland gully erosionen_UK
dc.subjectlightweight dronesen_UK
dc.subjectterrestrial laser scanningen_UK
dc.titleTesting the utility of structure from motion photogrammetry reconstructions using small unmanned aerial vehicles and ground photography to estimate the extent of upland soil erosionen_UK
dc.typeArticleen_UK

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