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Simple Instrument for Quick Measurement of Crown Projections

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For the determination of vertical projections of vegetation, a simple instrument which levels automatically is described. It can be used both for point-quadrat and line-intercept sampling. The instrument consists of two prisms attached to a gimballed suspension system. It projects an optical line both upward and downward, thus allowing the simultaneous interception of the tree canopy and the herbaceous vegetation.

Document Type: Journal Article

Affiliations: Staff of the Instituto de Ecología, Apartado Postal 18-845, México 18, D. F.

Publication date: November 1, 1980

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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.
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