Dissertation/Thesis Abstract

Analyzing Red and Gray Stages of Bark Beetle Attack in the San Bernardino National Forest Using Remote Sensing
by Morgan, Andy J., M.A., California State University, Long Beach, 2017, 87; 10263607
Abstract (Summary)

The San Bernardino National Forest (SBNF) has experienced periods of high, concentrated bark beetle epidemics in the late 1990’s and into the 2000’s. This increased activity has caused huge amounts of forest loss, resulting from disease introduced by bark beetles. Using remote sensing techniques and Landsat Thematic Mapper 5 (TM5) imagery, the spread of bark beetle diseased trees is mapped over a period from 1998 to 2008. Acreage of two attack stages (red and gray) were calculated from a level sliced classification method developed on data training sites. In each image using Normalized Difference Vegetation Index (NDVI) is the driver of forest health classifications. The results of the analysis are classification maps for each year, red acreage estimated for each study year, and gray attack acreage estimated for each study year. Additionally, for the period of 2001–2004, acreage was compared to those reported by the USDA with a thirteen percent lower mortality total in comparison to USDA federal land and a thirty-two percent lower total mortality (federal and non-federal) land in the SBNF.

Indexing (document details)
Advisor: Lee, Christopher T.
Commitee: Rodrigue, Christine M., Wechsler, Suzanne P.
School: California State University, Long Beach
Department: Geography
School Location: United States -- California
Source: MAI 56/04M(E), Masters Abstracts International
Source Type: DISSERTATION
Subjects: Entomology, Geography, Forestry, Remote sensing
Keywords: Bark beetle, California, GIS, Gray attack, Landsat, Red attack, Remote sensing
Publication Number: 10263607
ISBN: 9781369827644
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