Fig. 7
Relationships between DBH and stem distance obtained for different combinations of root reinforcement class (2, 5, 10, and 15 kN m−1) and location (G and PN). Estimated minimum distance between trees (m), of three stem diameters (0.1, 0.2, and 0.3 m DBH), needed to achieve root reinforcement of 2 to 15 kN m−1. Letter G corresponds to the values calculated for the ‘Gisborne’ dataset, and PN corresponds to the range of values calculated for the ‘Palmerston North’ dataset. Values are approximated at 0.5 m