Delineation of riparian vegetation from landsat multi-temporal imagery using PCA
Document Type
Journal Article
Publication Title
Hydrological Processes
School
School of Engineering
RAS ID
22318
Abstract
A deficiency in crucial digital data, such as vegetation cover, in remote regions is a challenging issue for water management and planning, especially for areas undergoing rapid development, such as mining in the Pilbara, Western Australia. This is particularly relevant to riparian vegetation, which provides important ecological services and, as such, requires regional protection. The objective of this research was to develop an approach to riparian vegetation mapping at a regional scale using remotely sensed data. The proposed method was based on principal component analysis applied to multi-temporal Normalized Difference Vegetation Index datasets derived from Landsat TM 5 imagery. To delimit the spatial extent of riparian vegetation, a thresholding method was required and various thresholding algorithms were tested. The accuracy of results was estimated for various Normalized Difference Vegetation Index multi-temporal datasets using available ground-truth data. The combination of a 14-dry-date dataset and Kittler's thresholding method provided the most accurate delineation of riparian vegetation
DOI
10.1002/hyp.11054
Access Rights
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Comments
Alaibakhsh, M., Emelyanova, I., Barron, O., Sims, N., Khiadani, M., & Mohyeddin, A. (2017). Delineation of riparian vegetation from Landsat multi‐temporal imagery using PCA. Hydrological Processes, 31(4), 800-810.
https://doi.org/10.1002/hyp.11054