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A Preliminary Hazard Rating of Grand Fir Stands for Mortality by the Fir Engraver

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A stand hazard index (SHR) was developed to rate grand fir stands for tree mortality due to the fir engraver. The stand hazard index is a function of Crown Competition Factor and tree species diversity. The index showed a strong correlation with the number of trees killed by the fir engraver during a 3-year period. This model (SHR) should assist forest managers in assigning management priorities for the application of cultural treatments to reduce or prevent engraver-caused mortality. Forest Sci. 23:103-110.

Keywords: Abies grandis; Crown Competition Factor; Diversity Index; Scolytus ventralis; Stand hazard index

Document Type: Journal Article

Affiliations: Research Associate, College of Forestry, Wildlife and Range Sciences, University of Idaho, Moscow

Publication date: March 1, 1977

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
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