Abstract
The effectiveness of using LANDSAT-1 multispectral digital data and imagery, supplemented by ground truth and aerial photography, was investigated as a new method of surveying gypsy moth (Porthetria dispar (L.)) (Lepidoptera; Lymantriidae) defoliation, which has greatly increased in Pennsylvania in recent years. Since the acreage and severity of gypsy moth defoliation reaches a peak from mid-June through the first few days of July, the July 8, 1973, LANDSAT-1 scene was chosen for analysis. Results indicate that LANDSAT-1 data can be used to discriminate between defoliated and healthy vegetation in Pennsylvania and that digital processing methods can be used to map the extent and degree of defoliation.
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Claims 2
Claim · model-written summary
LANDSAT-1 data discriminated defoliated from healthy vegetation in Pennsylvania.
Verbatim
e0“LANDSAT-1 data can be used to discriminate between defoliated and healthy vegetation in Pennsylvania”
Claim · model-written summary
Digital processing mapped the extent and degree of defoliation.
Not reportedComparatorValue
Verbatim
e0“digital processing methods can be used to map the extent and degree of defoliation”
e1“healthy vegetation in Pennsylvania”