Thesis Abstract and Dissertation Abstracts
Southern Pine Beetle Infestation Probability Mapping Using Weights of Evidence Analysis
Abstract Category: Science
Course / Degree: Master of Science, Forestry Thesis
Institution / University: Stephen F. Austin State University, United States
Published in: 2005
Weights of Evidence (WofE) spatial analysis was used to predict the probability of Southern Pine Beetle (SPB) infestation in Angelina, Nacogdoches, San Augustine and Shelby Counties, Texas. Thematic spatial data derived from LandSat imagery (1974 – 2002 LandSat 1 – 7) were used in the analysis. Data layers included: forest covertype, forest age, forest patch size and percent slope. WofE predicted infestation probabilities were significantly higher at actual infestation locations, versus locations chosen at random (p < 0.0001). Significantly more infestations occurred in the higher probability areas (p = 0.002). Infestation size was not significantly correlated with probability (p = 0.0528). Significant correlations were found between WofE probability and traditional SPB hazard rating, calculated from forest inventory data (p < 0.0001). WofE was successful at predicting the relative probability of SPB infestation. WofE probability maps were used to produce current SPB three and five-class hazard rating maps for the study area.
Thesis Keywords/Search Tags:
Southern Pine Beetle, Hazard Rating, Forest Health, Remote Sensing, Spatial Analysis
This Thesis Abstract may be cited as follows:
Grogan, J.B., 2005. Southern Pine Beetle Infestation Probability Mapping Using Weights of Evidence Analysis, Master of Science Thesis, Stephen F. Austin State Univesity, Nacogdoches, Texas
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Weights of Evidence 3-class hazard map for 2002, Angelina, Nacogdoches, San Augustine and Shelby Counties, Texas (click to enlarge) |
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Weights of Evidence 5-class hazard map for 2002, Angelina, Nacogdoches, San Augustine and Shelby Counties, Texas (click to enlarge) |
Submission Details: Thesis Abstract submitted by Jason Briant Grogan from United States on 14-Dec-2005 15:47.
Abstract has been viewed 2726 times (since 7 Mar 2010).
Jason Briant Grogan Contact Details: Email: jgrogan@sfasu.edu
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