A Method for Evaluating Fixed-Radius Plot Size When Sampling Western Juniper Seedlings and Saplings

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In this Subject: <a title="Forestry" href="/content/subcat;jsessionid=2hbs7jgd26nfs.alice?j_subject=146&j_availability=">Forestry
By this author: Azuma D.L. ;&nbsp; Bednar L.

Authors: Azuma D.L.; Bednar L.

Source: Western Journal of Applied Forestry, Volume 17, Number 4, 1 October 2002 , pp. 207-208(2)

Publisher: Society of American Foresters

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Abstract:

This note outlines a method for evaluating plot size selection for an inventory of western juniper woodlands in eastern Oregon. The Forest Inventory and Analysis (FIA) program of the USDA Forest Service in Portland, Oregon, used this method to evaluate several plot sizes to measure seedlings and saplings in the 1998 inventory of eastern Oregon. By choosing a 5 m radius plot, the probability of tallying no seedlings or saplings on four subplots is less than 10% for the three sample densities (0.01, 0.02, and 0.03 trees/m²) used. West. J. Appl. For. 17(4):207–208.

Keywords: Western juniper; sampling; seedling; sapling; forest inventory; environmental management; forest; forest management; forest resources; forestry; forestry research; forestry science; natural resources; natural resource management