An Approach to the Preparation of Variable Density Yield Tables

TradiTIonal yield tables which are prepared for fully stocked stands are not of much help in introducing manipulations precisely in management of forests to achive maximum yield of desired product in shortest period of harvest. In effect what we need is the variable density yield table. The present stuay is towards this end. It is completely a mathematical approach, in which various regressions have been developed to account for the maximum possible variation present in the crop The species selected for the study is Eucalyptus grandis (Hill) Maideen. In the analysis of data two separate growth functions(namely height growth aod basal area growth) are developed to explain their behaviour and with the assistance of third i.e. volume estimate) they are then linked together to formulate desired tables. The study has indicated following physical rotation (age of culmination of M.A.I.) for volume overbark for different productivity sites.