High-altitude color-infrared ERTS-1 underflight photos of a NASA test site in western Montana taken from a U-2 were evaluated for capability to resolve forest insect damage. Three insect outbreaks were known to occur within the test site: a bark beetle, mountain pine beetle Dendroctonus ponderosae Hopk; and two defoliators-pine butterfly Neophasia menapia F. and F., and western spruce budworm Choristoneura occidentalis Free. defoliation of ponderosa pine forests by pine butterfly was readily discernible on color IR positive transparencies. detection of mountain pine beetle damage was only partially successful. Defoliation of current years foliage by western spruce budworm was not resolved.

  • Corporate Authors:

    American Society of Photogrammetry

    105 North Virginia Avenue
    Falls Church, VA  United States  22046
  • Authors:
    • Ciesla, W M
  • Publication Date: 1974-6

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00253131
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 12 1974 12:00AM