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Title: Modeling missing remeasurement tree heights in forest inventory data

Author: 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.

Publication Series: Miscellaneous Publication

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.

Keywords: 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.

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Sheffield, Raymond M.; Schweitzer, Callie J. 2002. Modeling missing remeasurement tree heights in forest inventory data. 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.

 


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