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Title:	Modeling missing remeasurement tree heights in forest inventory data
Author(s):	Sheffield, Raymond M.; Schweitzer, Callie J.
Date:	2002
Source:	McRoberts, R.E.; Reams, G.A.; van Deusen, P.C.; [and others] eds. NC-252. St. Paul, MN: U. S. Department of Agriculture, Forest Service, North Central Research Station: 181-186.
Description:	Missing tree heights are often problematic in compiling forest inventory renleasureinent data. Heights for cut and niortality trees are usually not available; calculations of removal or mortality volumes must utilize either a modeled height at the time of tree death or the height assigned to the tree at a previous remeasurement. Less often, tree heights are not available for trees that were determined to be missed tally trees in an initial inventory. In these cases, a height is available for the current measurement, but the initial tree lieight must be modeled or estimated. In this paper, we present a procedure for predicting either a time 1 or time 2 height. The procedure uses actual tree height information for a tree collected at time 1 or time 2 if available. Incorporating tlie relationship between actual tree height to predicted height provides for an adjustment to height equations that do not incorporate site quality and stand parameters.
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