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Assessing soil salinity using WorldView-2 multispectral images in Timpaki, Crete, Greece

Alexakis Dimitrios, Daliakopoulos Ioannis, Panagea Ioanna, Tsanis Ioannis

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URIhttp://purl.tuc.gr/dl/dias/B3AF6A8F-A85D-4E84-9700-2A2DF046E64B-
Identifierhttps://doi.org/10.1080/10106049.2016.1250826-
Identifierhttps://www.tandfonline.com/doi/full/10.1080/10106049.2016.1250826-
Languageen-
Extent18 pagesen
TitleAssessing soil salinity using WorldView-2 multispectral images in Timpaki, Crete, Greeceen
CreatorAlexakis Dimitriosen
CreatorΑλεξακης Δημητριοςel
CreatorDaliakopoulos Ioannisen
CreatorΔαλιακοπουλος Ιωαννηςel
CreatorPanagea Ioannaen
CreatorΠαναγεα Ιωανναel
CreatorTsanis Ioannisen
CreatorΤσανης Ιωαννηςel
PublisherTaylor & Francisen
Content SummarySalinization is one of the major soil degradation threats occurring worldwide. This study evaluates the feasibility of operational surface soil salinity mapping based on state-of-the-art Earth Observation (EO) products captured by sensors on-board WorldView-2 (WV2) and Landsat 8 satellites. The proposed methods are tested in Timpaki, south-central Crete,Greece, where brackish water irrigation puts soil health at risk of soil salinization. In all cases, EO products are calibrated against soil samples collected from bare soil locations. Results indicate a moderate correlation of observed EC e values with the investigated remote sensing parameters. Regarding sensitivity to saline soil, the yellow band displays higher values. Comparison between methods used in the literature shows that those developed specifically for soil salinity, and especially index S5, perform better. The proposed ‘detection index’ and 3D PCA transformation methodology perform reasonably well in detecting areas with high EC e values and provide a simple and effective operational alternative for saline topsoil detection and mapping.en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2019-09-18-
Date of Publication2018-
SubjectPCAen
SubjectSatellite remote sensingen
SubjectSoil salinityen
SubjectVegetation and salinity indicesen
SubjectWorldVIew-2en
Bibliographic CitationD.D. Alexakis, I.N. Daliakopoulos, I.S. Panagea and I.K. Tsanis, "Assessing soil salinity using WorldView-2 multispectral images in Timpaki, Crete, Greece," Geocarto Int., vol. 33, no. 4, pp. 321-338, Apr. 2018. doi: 10.1080/10106049.2016.1250826en

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