Exploitation Factor of Mangium(Accacia mangium Wild)PlantationForest:Case Study on PT Toba Pulp Lestari Tbk.North Sumatera

Explotation factor is the ratio between the volume oflog actually utilized and the volume of log that could be utilized. The ratio is used in log production planning, i.e. to estimate the log volume that can be produced from a given forest. Explotationfactor is in correlation with several variables including land configuration and field condition,the type log utilization, harvesting infrastructure and facilities,tree species orforest types, and the skill of operators.Ibis research was to estimate the proper exploitation factor of Acacia mangium plantation in Aek Nauli, North Sumatera. Exploitation factors were calculatedfortwo different land configurationsas indicated by two different averageslopes, i. e 0-15% and 15-2 5%.Tbe average exploitation factorfs orthe two land configuration were 0. 97 and 0.95, respectively, whichare statistically not significantly different.