Salsabila, Huwaida Nur and Danoedoro, Projo (2021) The effect of atmospheric and topographic corrections on the vegetation density mapping using several vegetation indices: A case study in Arjuno-Welirang volcanoes, East Java. In: Seventh Geoinformation Science Symposium (GSS 2021), 2021, Yogyakarta.
Full text not available from this repository. (Request a copy)Abstract
This study aimed to evaluate the effects of atmospheric and topographic corrections on the vegetation density estimates based on vegetation index transformation. The research was conducted in Arjuno-Welirang volcanic complex, East Java, using Landsat 8 OLI imagery at 30 m spatial resolution. The image was corrected at two levels, i.e., atmospheric correction to at-surface reflectance using FLAASH method, and topographic correction using SCS-C method. The topographic correction referred to ALOS PALSAR DSM data, which was resampled at 30 m pixel size. The vegetation indices used includes NDVI, SAVI, ARVI, EVI and MSARVI. Fieldwork for measuring vegetation density was carried out by vertical bottom-up photography of the canopy on each sample, supported by observations of vegetation density using high-spatial resolution Google Earth imagery. The results showed that-in comparison with the atmospheric correction-the topographic correction was able to increase the correlation coefficients between the spectral information and the measured vegetation density in the field, especially for SAVI, EVI and MSARVI transformations. On the other hand, the NDVI and ARVI showed slight decreases. Based on the vegetation density maps generated using regression equations, the SAVI, EVI and MSARVI showed slight increases from atmospheric to topographic corrections, while the NDVI and ARVI showed declines. The rugged terrain condition affected the accuracies of the models due to the difficulty of vegetation density measurement in the field and even distribution of the samples. © 2021 SPIE.
Item Type: | Conference or Workshop Item (Paper) |
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Additional Information: | Cited by: 0 |
Uncontrolled Keywords: | Image resolution; Remote sensing; Vegetation; Atmospheric corrections; Case-studies; Density estimates; Density mapping; LANDSAT; Landsat 8 OLI; Topographic correction; Vegetation density; Vegetation density estimate; Vegetation index; Volcanoes |
Subjects: | G Geography. Anthropology. Recreation > GB Physical geography |
Divisions: | Faculty of Geography > Departemen Geografi Lingkungan |
Depositing User: | Sri JUNANDI |
Date Deposited: | 08 Oct 2024 00:27 |
Last Modified: | 08 Oct 2024 00:27 |
URI: | https://ir.lib.ugm.ac.id/id/eprint/8690 |