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Pacific Southwest Research Station

 

Pacific Southwest Research Station
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Albany, CA 94710-0011

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Research Paper

Title: Impact of douglas-fir tussock moth... color aerial phtography evaluates mortality

Author: Wert, Steven L.; Wickman, Boyd E.

Date: 1970

Source: Res. Paper PSW-RP-060. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station; 10 p.

Station ID: RP-PSW-060

Description: Thorough evaluation of insect impact on forest stands is difficult and expensive on the ground. In a study of tree damage following Douglas-fir tussock moth defoliation in Modoc County, California, large-scale (1:1,584)70-mm. color aerial photography was an effective sampling tool and took lesstime and expense than ground methods. Comparison of the photo interpretations with a sample ground cruisegave high correlations (0.78 to 0.095) for tree mortality top kill, and an estimate of mortality made from photoswas within 5 cut of the ground cruise estimate.

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Citation

Wert, Steven L.; Wickman, Boyd E.  1970.  Impact of douglas-fir tussock moth... color aerial phtography evaluates mortality  Res. Paper PSW-RP-060. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station; 10 p.

Last Modified: Nov 18, 2013 12:45:36 PM