Laser scanning for forest structure analysis

Coburn, Adam John (2014) Laser scanning for forest structure analysis. [USQ Project]

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Abstract

Terrestrial laser scanning is one of the most recent technological advancements within the spatial science industry. Its current use within the forest analysis field is limited.

Collecting data to create a forest inventory can be a long and strenuous process with current procedures relying on outdated and inefficient techniques. Terrestrial laser scanning is a technique that has the potential to greatly enhance this data collection process.

In this study, a forested area of 6700m2 in eastern Toowoomba has been scanned to extract tree height, diameter at breast height, basal area and volume. The same data has been collected using contemporary techniques so that terrestrial laser scanning’s suitability can be assessed.
The measured components were compared and discrepancies were identified. When compared to traditional methods, laser scanning overestimated height by 0.196m (2.42%). Diameter at breast height, basal area and volume were all underestimated by 0.061m (13.33%), 0.044m2 (24.35%) and 0.374m3 (22.47%) respectively. The differences in height and diameter at breast height are acceptable. The differences in excess of 20%, namely basal area and volume, are unacceptable with further research required to identify both the cause and the solution.


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Item Type: USQ Project
Item Status: Live Archive
Additional Information: Bachelor of Spacial Sciences (Surveying) project.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Supervisors: Liu, Xiaoye
Date Deposited: 09 Sep 2015 04:44
Last Modified: 03 Mar 2016 04:24
Uncontrolled Keywords: terrestrial laser scanning; forest structure analysis; forest analysis; forest inventory
Fields of Research : 09 Engineering > 0907 Environmental Engineering > 090703 Environmental Technologies
URI: http://eprints.usq.edu.au/id/eprint/27257

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