干旱区生态环境知识资源中心(Arid): A New Application of the Disturbance Index for Fire Severity in Coastal Dunes

Arid

DOI	10.3390/rs13234739
	A New Application of the Disturbance Index for Fire Severity in Coastal Dunes
	DaSilva, Marcio D.; Bruce, David; Hesp, Patrick A.; da Silva, Graziela Miot
通讯作者	DaSilva, MD (corresponding author), Flinders Univ S Australia, Coll Sci & Engn, Beach & Dune Syst BEADS Lab, Bedford Pk, SA 5042, Australia.
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2021
卷号	13 期号:23
英文摘要	Fires are a disturbance that can lead to short term dune destabilisation and have been suggested to be an initiation mechanism of a transgressive dune phase when paired with changing climatic conditions. Fire severity is one potential factor that could explain subsequent coastal dune destabilisations, but contemporary evidence of destabilisation following fire is lacking. In addition, the suitability of conventional satellite Earth Observation methods to detect the impacts of fire and the relative fire severity in coastal dune environments is in question. Widely applied satellite-derived burn indices (Normalised Burn Index and Normalised Difference Vegetation Index) have been suggested to underestimate the effects of fire in heterogenous landscapes or areas with sparse vegetation cover. This work assesses burn severity from high resolution aerial and Sentinel 2 satellite imagery following the 2019/2020 Black Summer fires on Kangaroo Island in South Australia, to assess the efficacy of commonly used satellite indices, and validate a new method for assessing fire severity in coastal dune systems. The results presented here show that the widely applied burn indices derived from NBR differentially assess vegetation loss and fire severity when compared in discrete soil groups across a landscape that experienced a very high severity fire. A new application of the Tasselled Cap Transformation (TCT) and Disturbance Index (DI) is presented. The differenced Disturbance Index (dDI) improves the estimation of burn severity, relative vegetation loss, and minimises the effects of differing soil conditions in the highly heterogenous landscape of Kangaroo Island. Results suggest that this new application of TCT is better suited to diverse environments like Mediterranean and semi-arid coastal regions than existing indices and can be used to better assess the effects of fire and potential remobilisation of coastal dune systems.
英文关键词	fire severity differenced normalised burn ratio tasseled cap transformation disturbance index differenced disturbance index Kangaroo Island transgressive dunes
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000735136900001
WOS关键词	QUANTIFYING BURN SEVERITY ; TASSELED CAP TRANSFORMATION ; YELLOWSTONE-NATIONAL-PARK ; LANDSAT TIME-SERIES ; FOREST DISTURBANCE ; LANDSCAPE HETEROGENEITY ; POSTFIRE VEGETATION ; KANGAROO ISLAND ; SAND DUNES ; RECOVERY
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/373926
作者单位	[DaSilva, Marcio D.; Bruce, David; Hesp, Patrick A.; da Silva, Graziela Miot] Flinders Univ S Australia, Coll Sci & Engn, Beach & Dune Syst BEADS Lab, Bedford Pk, SA 5042, Australia
推荐引用方式 GB/T 7714	DaSilva, Marcio D.,Bruce, David,Hesp, Patrick A.,et al. A New Application of the Disturbance Index for Fire Severity in Coastal Dunes[J],2021,13(23).
APA	DaSilva, Marcio D.,Bruce, David,Hesp, Patrick A.,&da Silva, Graziela Miot.(2021).A New Application of the Disturbance Index for Fire Severity in Coastal Dunes.REMOTE SENSING,13(23).
MLA	DaSilva, Marcio D.,et al."A New Application of the Disturbance Index for Fire Severity in Coastal Dunes".REMOTE SENSING 13.23(2021).