Timber Volume Stratification on Small-Scale Aerial Photos
Abstract:Data from a timber inventory of western Oregon were analyzed to test whether interpretation of photos with a scale of 1:63.000 could be used to improve efficiency of timber volume estimates. When photo plots classified on this scale were used to stratify a field sample, the resulting double-sample design provided estimates of total cubic-foot volume with twice the efficiency of a simple field-plot survey--i.e., precision was improved without an increase in cost. Results were similar to those obtained from an earlier study testing interpretation on 1:12,000 to 1:20,000 scale photos.
Document Type: Journal Article
Affiliations: Mensurationist at the Pacific Northwest Forest and Range Experiment Station, USDA Forest Service, Portland, Oregon
Publication date: November 1, 1981
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- The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.
2015 Impact Factor: 1.476
Ranking: 22 of 66 in forestry
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