Seasonal differences assist in mapping granite outcrops using Landsat TM imagery across the Southwest Australian Floristic Region
Knowledge of the location and extent of granite outcrops (GOs) in the Southwest Australian Floristic Region is important to understand their role as refugia. We present a methodology to map GOs using biannual Landsat TM imagery. An adaptive vegetation cover mask capitalising on seasonal differences,...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Published: |
Mapping Sciences Institute Australia
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/26560 |
| _version_ | 1848752021380792320 |
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| author | Alibegovic, G. Schut, A. Wardell-Johnson, Grant Robinson, Todd |
| author_facet | Alibegovic, G. Schut, A. Wardell-Johnson, Grant Robinson, Todd |
| author_sort | Alibegovic, G. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Knowledge of the location and extent of granite outcrops (GOs) in the Southwest Australian Floristic Region is important to understand their role as refugia. We present a methodology to map GOs using biannual Landsat TM imagery. An adaptive vegetation cover mask capitalising on seasonal differences, combined with a supervised classification, allowed differentiation of granite from other land covers on five GOs across the rainfall gradient. This methodology provided high classification accuracy (Overall Kappa ranged from 0.83 to 0.91) irrespective of location. Therefore, there is potential to use these methods to compile a more complete GO inventory over the region. |
| first_indexed | 2025-11-14T08:02:00Z |
| format | Journal Article |
| id | curtin-20.500.11937-26560 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:02:00Z |
| publishDate | 2015 |
| publisher | Mapping Sciences Institute Australia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-265602017-09-13T15:25:59Z Seasonal differences assist in mapping granite outcrops using Landsat TM imagery across the Southwest Australian Floristic Region Alibegovic, G. Schut, A. Wardell-Johnson, Grant Robinson, Todd Knowledge of the location and extent of granite outcrops (GOs) in the Southwest Australian Floristic Region is important to understand their role as refugia. We present a methodology to map GOs using biannual Landsat TM imagery. An adaptive vegetation cover mask capitalising on seasonal differences, combined with a supervised classification, allowed differentiation of granite from other land covers on five GOs across the rainfall gradient. This methodology provided high classification accuracy (Overall Kappa ranged from 0.83 to 0.91) irrespective of location. Therefore, there is potential to use these methods to compile a more complete GO inventory over the region. 2015 Journal Article http://hdl.handle.net/20.500.11937/26560 10.1080/14498596.2014.952253 Mapping Sciences Institute Australia restricted |
| spellingShingle | Alibegovic, G. Schut, A. Wardell-Johnson, Grant Robinson, Todd Seasonal differences assist in mapping granite outcrops using Landsat TM imagery across the Southwest Australian Floristic Region |
| title | Seasonal differences assist in mapping granite outcrops using Landsat TM imagery across the Southwest Australian Floristic Region |
| title_full | Seasonal differences assist in mapping granite outcrops using Landsat TM imagery across the Southwest Australian Floristic Region |
| title_fullStr | Seasonal differences assist in mapping granite outcrops using Landsat TM imagery across the Southwest Australian Floristic Region |
| title_full_unstemmed | Seasonal differences assist in mapping granite outcrops using Landsat TM imagery across the Southwest Australian Floristic Region |
| title_short | Seasonal differences assist in mapping granite outcrops using Landsat TM imagery across the Southwest Australian Floristic Region |
| title_sort | seasonal differences assist in mapping granite outcrops using landsat tm imagery across the southwest australian floristic region |
| url | http://hdl.handle.net/20.500.11937/26560 |