Tree Height: Can Large Scale Photo Measurements Be More Accurate Than Field Measurements?
- 1 June 1985
- journal article
- Published by Canadian Institute of Forestry in The Forestry Chronicle
- Vol. 61 (3) , 214-217
- https://doi.org/10.5558/tfc61214-3
Abstract
Large scale aerial photograph (1:1000) and field measurements of standing tree height were compared with felled height measurements for 502 lodgepole pine trees in the Yukon territory. Photo and field height measurements were not significantly different from felled height. The standard deviations of field and photo height errors were 0.95 m and 1.17 m respectively, about 6% of the average felled height (16.3 m). Variability in errors due to image type (contact print or transparency) and image enlargement scale (1x, 2x, 4x) was not significant, while variation in errors due to photo plot differences was significant.Keywords
This publication has 1 reference indexed in Scilit:
- FIXED AIR-BASE 70 mm PHOTOGRAPHY, A NEW TOOL FOR FOREST SAMPLINGThe Forestry Chronicle, 1966