Incorporating Lindenmayer systems for architectural development in a functional-structural tree model

This paper enhances the modelling capabilities of LIGNUM with the possibility to formally describe the architectural development of trees with Lindenmayer systems. This is achieved by presenting an algorithm to convert tree structures generated by Lindenmayer systems to the LIGNUM representation of trees with feedback of results of events or processes from LIGNUM to Lindenmayer system. We then give two example applications that model the development of Scots pine (Pinus sylvestris L.) and the dwarf shrub bearberry (Arctostaphylos uva-ursi L.). Finally we discuss our approach and its consequences for the future development of LIGNUM.