Recovery Rates of Some Framework Tree Species After Fire

Abstract: Recovery rates of some framework tree species affected by fire in April 2005, were compared in a 3-year-old FORRU experimental plot (40 X 40 sq m) above Ban Mae-Sa Mai, Mae Rim District, Chiang Mai. The number, length, diameter and crown width of new shoots at three parts of the trees (base, trunk, crown) were recorded monthly from July 2005 to January 2006. Twenty-two framework tree species, or 79% of all planted trees, survived the fire. Each species demonstrated different survival percentages, e.g. Spondias pinnata (L. f.) Kurz (100%) and Gmelina arborea Roxb. (100%). The framework tree species tested recovered from the fire at different rates (P = 0.0001, 95%). Prunus cerasoides D.Don was the species with the fastest recovery rate: survival rate 90%, increasing new sprouting at its base 341 cm/year and canopy width 206 cm.