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Index Geophysics

Mapping soil degradation using remote sensing data and ancillary data: South-East Moravia, Czech Republic

Item

Title (Dublin Core)

Mapping soil degradation using remote sensing data and ancillary data: South-East Moravia, Czech Republic

Description (Dublin Core)

Data on the real extent of soil that is degraded by erosion represent important information for the purposes of conservation policy. However, this type of data is rarely available for large areas. A remote-sensing-based method for identifying of eroded areas at the regional scale has been tested using a combination of time series of free access Sentinel-2 image data, airborne orthoimages and ground-truth data. The unsupervised classification ISODATA of the Sentinel-2A images has been performed. The minimum distance method has been applied for the assignment of unsupervised classes to four erosion classes using the ground-truth data. The automatic classification of eroded soils achieved an overall accuracy of 55.2% for three distinguished classes. An accumulated class has been eliminated as no unsupervised classes were assigned to this erosion class. A simplified classification of two classes (strongly eroded and other soils) reached an accuracy of 80.9%. The overall accuracy of the simplified classification increased to 86.9% after the visual refinement using orthoimages. This study shows the potential of the tested approach to produce valuable data on actual soil degradation by erosion. The limitations of the method are related to the soil cover variability, masking effect of clouds, vegetation or litter and the spectral separability of individual classes.

Creator (Dublin Core)

Daniel Žížala
Anna Juřicová
Tereza Zádorová
Kateřina Zelenková
Robert Minařík

Subject (Dublin Core)

Soil erosion
remote sensing
Sentinel-2
orthoimage
unsupervised classification
Chernozem
Oceanography
GC1-1581
Geology
QE1-996.5

Publisher (Dublin Core)

Taylor & Francis Group

Date (Dublin Core)

2019-03-01T00:00:00Z

Type (Dublin Core)

article

Identifier (Dublin Core)

2279-7254
10.1080/22797254.2018.1482524
https://doaj.org/article/18e8c0669445461882e09849c70769cb

Source (Dublin Core)

European Journal of Remote Sensing, Vol 52, Iss 0, Pp 108-122 (2019)

Language (Dublin Core)

EN

Relation (Dublin Core)

http://dx.doi.org/10.1080/22797254.2018.1482524
https://doaj.org/toc/2279-7254

Provenance (Dublin Core)

Journal Licence: CC BY-NC