You are here: Home
/ Publication Information
Title: Direct sampling for stand density index
Author: Ducey, Mark J.; Valentine, Harry T.;
Source: Western Journal of Applied Forestry. 23(2): 78-82.
Publication Series: Scientific Journal (JRNL)
Description: A direct method of estimating stand density index in the field, without complex calculations, would be useful in a variety of silvicultural situations. We present just such a method. The approach uses an ordinary prism or other angle gauge, but it involves deliberately "pushing the point" or, in some cases, "pulling the point." This adjusts the usual limiting distances in prism sampling to match the limiting distances required for sampling with a specified stand density factor (SDF). The estimate of stand density associated with a point is just the number of trees tallied times the SDF; no diameter measurements are needed. We give guidelines on choosing an SDF on the basis of expected stand characteristics and equations for calculating the limiting distances and the amount of "push." Field implementation of the resulting method is extremely fast and simple.
Keywords: Reineke, relative density, density management diagram, horizontal point sampling
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
- This publication may be available in hard copy. Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact Sharon Hobrla, email@example.com if you notice any errors which make this publication unusable.
XML: View XML
Ducey, Mark J.; Valentine, Harry T. 2008. Direct sampling for stand density index. Western Journal of Applied Forestry. 23(2): 78-82.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility