treePlotArea

The German national forest inventory uses angle count sampling, a sampling method first published as 'Bitterlich, W.: Die Winkelzählmessung. Allgemeine Forst- und Holzwirtschaftliche Zeitung, 58. Jahrg., Folge 11/12 vom Juni 1947' and extended by Grosenbaugh () as probability proportional to size sampling. When plots are located near stand boundaries, their sizes and hence their probabilities need to be corrected.