<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>Sheel Bansal</dc:contributor>
  <dc:contributor>Constance A. Harrington</dc:contributor>
  <dc:creator>Robert O. Curtis</dc:creator>
  <dc:date>2016</dc:date>
  <dc:description>&lt;p data-canvas-width="476.77850000000024"&gt;This report presents updated information on a 1981 Douglas-fir (&lt;i&gt;Pseudotsuga menziesii&lt;/i&gt; (Mirb.) Franco var. &lt;i&gt;menziesii&lt;/i&gt;) plantation spacing trial at 33 years from planting. Stand statistics at the most recent measurement were compared for initial spacing of 1 through 6 meters and associated relative densities. There was no clear relationship of spacing to top height. Diameter, live crown ratio, and percent survival increased with spacing; basal area and relative density decreased with increase in spacing. Volume in trees &amp;ge; 4 cm diameter was greatest at 2 m spacing, while utilizable volume (trees &amp;ge;20 cm dbh) was greatest at 4 m spacing. Live crown ratio decreased and total crown projectional area increased with increasing relative density indices. Total crown projectional area was more closely related to relative density than to basal area.&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:language>en</dc:language>
  <dc:publisher>U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station</dc:publisher>
  <dc:title>Relation of initial spacing and relative stand density indices to stand characteristics in a Douglas-fir plantation spacing trial</dc:title>
  <dc:type>reports</dc:type>
</oai_dc:dc>