The development of sampling methods for key-year patterns of white ash (Fraxinus americana L.)
<p>A key year is a year in which a significant number of trees had a wider or narrower growth ring than the previous year. A non-key year is a year which there vas not a significant number of trees that had greater or less growth than the previous year. A key-year pattern is a series of key ye...
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Virginia Tech
2014
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| Online Access: | http://hdl.handle.net/10919/41075 http://scholar.lib.vt.edu/theses/available/etd-02132009-172141/ |