Abstract

We have devised a new field methodology to collect log data necessary to develop a graphical system for 3-D spatial reconstruction of the internal and external shape of the log, based on stem and cross-sectional analysis. The methodology provides a detailed internal and external description of the stem, including the full growth history of the tree as recorded in the rings. The technique may be used to analyse both straight and swept logs, and is specially suited for studying the evolution of stem sweep when a tree has lost its verticality, due to environmental factors such as snow and wind, or through destruction of the leader. We have developed the software required to process the data and to reconstruct the development inside the tree.