An alternative approach for detecting and monitoring selectively logged forests in the Amazon

A methodology is presented for estimating the area affected by selective logging in Amazonia's terra firme forests. Areas of land cleared for temporarily storing logs in the forest (log landings) were detected within soil fraction images derived from linear mixture models of forested areas. Bas...

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Bibliographic Details
Published in:International journal of remote sensing 2000-01, Vol.21 (1), p.173-179
Main Authors: Souza, C., Barreto, P.
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Applied geophysics
Biological and medical sciences
Earth sciences
Earth, ocean, space
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
General aspects. Techniques
Internal geophysics
Teledetection and vegetation maps
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Summary:A methodology is presented for estimating the area affected by selective logging in Amazonia's terra firme forests. Areas of land cleared for temporarily storing logs in the forest (log landings) were detected within soil fraction images derived from linear mixture models of forested areas. Based on field data, a 180m timber extraction radius was assumed for all log landings. The extraction area calculated for detected log landings provides an estimate of the area potentially affected by logging. The resultant image classifications revealed excellent agreement with field data. This methodology can be a powerful tool for the monitoring and control of logging in the Amazon.
ISSN:0143-1161
1366-5901
DOI:10.1080/014311600211064