Topic 2.4

• Factors affecting rotation length

  • Impact of growth factors

  • Effect of changing product prices

  Site factors

  • Silvicultural inputs

  • Changing interest rates

  • Time and taxes

  •Uncertainty
• Part of the Hydrologic Cycle?

  Evaporation, Evapotranspiration, Condensation, Precipitation, Overland flow
• value of tree increases as the diameter increases
• increasing of the timber value, results in the increased investment period since the TR is increasing
• improve site quality can result into longer investment period
• increasing interest rate can make the rotation period and investment period shorter
• increase in property tax can shorten the rotation period
• removal of property tax can lengthen the rotation period
• accuracy of determining the minimum rotation is highly dependent to the accuracy of forecasting future costs, prices, and yields, t/f?

  true
• higher uncertainty = high interest rate

  higher interest rate = shorter rotation period
• with thinning = higher timber yield

  without thinning = lower timber yield