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A Modified Tree Classification for Use in Growth Studies and Timber Marking in Black Hills Ponderosa Pine

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A satisfactory silvicultural management of ponderosa pine stands requires a judicious selection of trees to be left in the reserve stand. The timber marker must know what type of tree has the greatest growth potentialities and what type of tree will respond but slightly upon being released. The silvicultural problem in marking therefore is one of recognizing the combination of characters, age, and crown vigor, which indicate high or low growth capacities. The trees selected for cutting should be those which have ceased growing or which have lost their ability to respond to an increase in light, nutrient substances, and soil moisture. The trees of merchantable size which are left to form the nucleus of the second cut should be those which will respond most to release and maintain their productive capacity for the greatest number of years.

Document Type: Journal Article

Affiliations: Rocky Mountain Forest and Range Experiment Station

Publication date: June 1, 1939

More about this publication?
  • 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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