A method of selecting data points for fitting the maximum biomass-density line for stands undergoing self-thinning
AUSTRALIAN JOURNAL OF ECOLOGY(1997)
Abstract
A problem that has always existed in self-thinning studies is the lack of objectivity in determining which data points to include when fitting the maximum biomass-density line. This paper demonstrates a more objective method of selecting data points using data from 12 even-aged Pinus radiata stands undergoing self-thinning. The method involves the division of a cluster of data points into a specified number of intervals. From each interval, that point having the maximum stand biomass is selected to contribute to the fitting process. This process is repeated a specified number of times using an increasing number of intervals. Each time an estimate of the line is obtained. From these estimates, one can be chosen to represent the maximum biomass-density line. The method may also be useful in other areas involving the definition of a boundary condition.
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Key words
boundary condition,maximum biomass-density line,selection of data points,self-thinning
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