Introduction to the course . Why we are here. What to measure.
Stand description. Definitions. Silvicultural system and treatment . Stand composition. Stand density.. Stand form . Stand origin.
Cubature of logs and other forest products Introduction: stem shape . Types of timber/ forest product sales. Woody assortments and other products. Timber volume determination: Huber’s formula, Smalian’s formula, Cavalieri’s formula. Other formulas (Heyer, Formula dei trapezi e di Simpson).Staked wood. Weight measure. Sawn timber.
Introduction to stand volume estimation. Introduction. The general formula for stand volume estimation Stand basal area. Diameter mensuration and instruments, stand basal area calculation, diameter of mean basal area calculation. Height. Measurement instruments and techniques, Height-diameter curves, mean height, dominant height Form factors and their determination. Parameters related to form factor
Methods for stand volume estimation. Introduction to stand volume estimation. Synthetic methods. Analytical methods (volume tables): one way table, two way table, multi-way tables, stand table. Analytical methods (direct): Hossfeld, Draudt, Urich, Hartig. Review of the main methods for volume estimation and conclusions. Forest mensuration in cork oak stands: cork estimation.
Forest sampling techniques for other purposes.
Introduction to forest sampling. Descriptive statistics: frequence distribution, mean, standard deviation. Inferential statistics: regression analysis. Forest sampling: sampling intensity, sampling design.