BEETLE-KILLED PINE ESTIMATES

A STUDY WAS UNDERTAKEN TO DETERMINE THE FEASIBILITY OF DETECTING MOUNTAIN PINE BEETLE-KILLED LODGEPOLE PINE WITH 35-MM COLOR AERIAL PHOTOGRAPHS AT A 1:5,000 SCALE. PHOTOGRAPHS WERE OBTAINED WITH A STANDARD 35-MM CAMERA FROM A LIGHT AIRCRAFT. COUNTS OF DEAD TREES WERE MADE FROM STERO PHOTOGRAPHS BY UNTRAINED INTERPRETERS AND COMPARED TO ACTUAL GROUND COUNTS. ADDITIONALLY, INTERPRETERS WERE ASKED TO SEPARATE NEW FADERS FROM ALL OTHER MORTALITY. BOTH TREE CONDITION CATEGORIES WERE DISCERNED FROM THE PHOTOS WITH ACCEPTABLE ACCURACY, INDICATING THE POTENTIAL OF 35-MM AERIAL PHOTOGRAPHY AS AN INEXPENSIVE AND EFFECTIVE MEASUREMENT METHOD. THE METHOD WAS TO BE APPLIED OPERATIONALLY IN 1971 WITHIN THE FRAMEWORK OF A DOUBLE-SAMPLING DESIGN. /AUTHOR/

  • Authors:
    • Klein, W H
  • Publication Date: 1973-4

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00203011
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 8 1973 12:00AM