Authors / CoAuthors
Gow, L.J. | Lymburner, L. | McIntyre, A. | Magee, J.W. | Halas, L.
Abstract
The combination of anthropogenic activity and climate variability has resulted in changes to hydrologic regimes across the globe. Changes in water availability impact on vegetation structure and function, particularly in semi-arid landscapes. Riparian and floodplain vegetation communities are sensitive to changes to surface-water and groundwater availability in these water-limited landscapes. Remote-sensing multi-temporal methods can be used to detect changes in vegetation at a regional to local scale. In this study, a `best-available pixel' approach was used to represent dry-season, woody-vegetation-canopy characteristics inferred from Normalised Difference Vegetation Index (NDVI). This paper describes a method in which Landsat 5 TM and Landsat 7 ETM+ data from 1987 to 2011 were processed using object-based image-analysis techniques to generate annual minimum NDVI values for vegetation communities in the Lower-Darling floodplain The changes detected in riparian and floodplain canopies over time can then be integrated with other spatial data to identify water-source dependence and infer a relationship between changes to the hydrologic characteristics of specific water sources and vegetation dynamics.
Product Type
nonGeographicDataset
eCat Id
81931
Contact for the resource
Custodian
Owner
Custodian
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
-
- External PublicationScientific Journal Paper
- ( Theme )
-
- vegetation
- ( Theme )
-
- remote sensing
- ( Theme )
-
- hydrology
- ( Theme )
-
- groundwater
- Australian and New Zealand Standard Research Classification (ANZSRC)
-
- Ecosystem Function
-
- Published_Internal
Publication Date
2014-01-01T00:00:00
Creation Date
Security Constraints
Legal Constraints
Status
Purpose
Maintenance Information
notPlanned
Topic Category
inlandWaters
Series Information
Lineage
Publication based on work undertaken as part of the Broken Hill Managed Aquifer Recharge Project.
Parent Information
Extents
Reference System
Spatial Resolution
Service Information
Associations
Downloads and Links
Source Information
Data included in this publication is derived from the Broken Hill Managed Aquifer Recharge Project. The Commonwealth Government is the IP owner