| dc.contributor.author | Wiesmair, Martin | |
| dc.contributor.author | Feilhauer, Hannes | |
| dc.contributor.author | Magiera, Anja | |
| dc.contributor.author | Otte, Annette | |
| dc.contributor.author | Waldhardt, Rainer | |
| dc.date.accessioned | 2022-11-18T09:51:25Z | |
| dc.date.available | 2016-12-15T08:06:56Z | |
| dc.date.available | 2022-11-18T09:51:25Z | |
| dc.date.issued | 2016 | |
| dc.identifier.uri | http://nbn-resolving.de/urn:nbn:de:hebis:26-opus-123928 | |
| dc.identifier.uri | https://jlupub.ub.uni-giessen.de//handle/jlupub/9232 | |
| dc.identifier.uri | http://dx.doi.org/10.22029/jlupub-8620 | |
| dc.description.abstract | In the Georgian Caucasus, unregulated grazing has damaged grassland vegetation cover and caused erosion. Methods for monitoring and control of affected territories are urgently needed. Focusing on the high-montane and subalpine grasslands of the upper Aragvi Valley, we sampled grassland for soil, rock, and vegetation cover to test the applicability of a site-specific remote-sensing approach to observing grassland degradation. We used random-forest regression to separately estimate vegetation cover from 2 vegetation indices, the Normalized Difference Vegetation Index (NDVI) and the Modified Soil Adjusted Vegetation Index (MSAVI2), derived from multispectral WorldView-2 data (1.8 m). The good model fit of R2 = 0.79 indicates the great potential of a remote-sensing approach for the observation of grassland cover. We used the modeled relationship to produce a vegetation cover map, which showed large areas of grassland degradation. | en |
| dc.language.iso | en | de_DE |
| dc.rights | Namensnennung 3.0 International | * |
| dc.rights.uri | https://creativecommons.org/licenses/by/3.0/ | * |
| dc.subject | grassland degradation | en |
| dc.subject | erosion | en |
| dc.subject | overgrazing | en |
| dc.subject | NDVI | en |
| dc.subject | MSAVI2 | en |
| dc.subject.ddc | ddc:630 | de_DE |
| dc.title | Estimating vegetation cover from high-resolution satellite data to assess grassland degradation in the Georgian Caucasus | en |
| dc.type | article | de_DE |
| local.affiliation | Zentren | de_DE |
| local.opus.id | 12392 | |
| local.opus.institute | Institut für Landschaftsökologie und Ressourcenmanagement | de_DE |
| local.opus.fachgebiet | Zentrum für internationale Entwicklungs- und Umweltforschung | de_DE |
| local.source.uri | https://doi.org/10.1659/mrd-journal-d-15-00064.1 | |
| local.source.freetext | Mountain Research and Development 36(1):56-65 | de_DE |
