Image analysis techniques for assessing landscape structural change: a case study of the Lockyer Valley Catchment, Queensland

Apan, Armando A. and Raine, Steven R. and Paterson, Mark S. (2000) Image analysis techniques for assessing landscape structural change: a case study of the Lockyer Valley Catchment, Queensland. In: 10th Australasian Remote Sensing and Photogrammetry Conference (ARSPC 2000), 21-25 Aug 2000, Adelaide, Australia.

Abstract

An understanding of the landscape dynamics has great implications for land management. Knowing the landscape structure, the nature and magnitude of its changes, and how it affects landscape processes are essential in the sound management of lands and their resources. To develop appropriate mapping and landscape structural change assessment techniques, a case study of the Lockyer Valley catchment in Queensland, Australia, was conducted. Adopting a post-classification change detection method, the study used Landsat MSS (1973) and TM (1997) imagery which were separately classified using spatial masking and supervised classification (employing a maximum likelihood classifier with prior probabilities). The land use/cover maps produced were then utilised as input to a GIS-based landscape pattern calculation software to generate landscape structure indices. The study has yielded information about the degenerating state of the landscape in the catchment. The woody vegetation areas have become more fragmented, mainly due to conversion to pasture: they are characterised by the proliferation of small, less connected vegetation patches. This study highlighted the valuable use of remote sensing and GIS in mapping and analysis of landscape change. The critical issues identified include the difference in sensor spatial resolution and the shortcomings in calculating other spatial processes in land transformation.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Surveying and Land Information
Date Deposited: 29 Aug 2016 02:20
Last Modified: 04 Apr 2018 05:38
Fields of Research : 04 Earth Sciences > 0403 Geology > 040312 Structural Geology
URI: http://eprints.usq.edu.au/id/eprint/29646

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