Phenological assessment of Darling River claypan lakes using satellite imagery

Perera, Kithsiri and Tateishi, Ryutaro (2011) Phenological assessment of Darling River claypan lakes using satellite imagery. In: Autumn Scientific Conference of the Japan Society of Photogrammetry and Remote Sensing (JSPRS 2011) , 20-21 Oct 2011, Oita, Japan.

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Abstract

Earth observation satellites with higher spatial resolution capability provide four or more image bands at less than 10m resolution and ideally suitable for conducting numerous land cover classifications, especially for small areas. This study uses AVENIR 2, SPOT, and DigitalGlobe images on multitemporal basis to examine the health of clay pan lakes associate with spontaneous wetlands in the Murray-Darling River Basin, Australia. These unique lakes along the river add an essential lifeline to numerous flora and fauna in harsh central Australian climate. A research conducted in 1996 estimated that there are 18,500 wetlands located within the basin. In another recent study, 98 waterbird species were recorded in these wetlands. The same study recorded that bird species like ibis and egrets have very high sensitivity for water level changes. However, extreme fluctuations in water levels are negatively affecting the health of these lakes and wetlands. Due to the ever increasing human activities such as irrigation, recreation, and changing land use of the river system and highly fluctuating river water regime and water quality, the spatial status of small linear shape lakes can be used as a phenological indicator to assess the river health. After a long drought spell, Darling River catchment received a huge amount of rainfall in last two years, causing dynamic environmental changes along the river. These changes can be affected to mapping aspects too, due to the expansion of wetlands associate with lakes. The study founded that high resolution satellite images can be counted as a good candidate to monitor small land cover features in these wetlands. Mapping detail land cover of selected lakes under number of extreme weather conditions like prolong drought and heavy rain will help to understand and evaluate spatial conditions of claypan lakes and the surrounding environment.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Speech)
Refereed: No
Item Status: Live Archive
Additional Information: No evidence of copyright restrictions preventing deposit.
Depositing User: Dr Kithsiri Perera
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Surveying and Land Information
Date Deposited: 25 Jun 2012 03:13
Last Modified: 03 Jul 2013 01:02
Uncontrolled Keywords: Darling River; satellite data; claypan lakes; river health; phenological indicator
Fields of Research (FOR2008): 09 Engineering > 0909 Geomatic Engineering > 090905 Photogrammetry and Remote Sensing
05 Environmental Sciences > 0502 Environmental Science and Management > 050211 Wildlife and Habitat Management
05 Environmental Sciences > 0501 Ecological Applications > 050101 Ecological Impacts of Climate Change
Socio-Economic Objective (SEO2008): D Environment > 96 Environment > 9605 Ecosystem Assessment and Management > 960506 Ecosystem Assessment and Management of Fresh, Ground and Surface Water Environments
URI: http://eprints.usq.edu.au/id/eprint/20694

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