NRS - RWU 4104

Last modified 08/24/2007

Computer Programs -- Available

  • AMORPHYS is computerized forest model, written in object-oriented code, that runs under Windows 95 or NT. It is designed to estimate the growth and development of trees in an even-aged stand under (i) the application of intensive silviculture (e.g., thinning, pruning, irrigation) and (ii) varying climatic and atmospheric conditions.

  • Balance is a computer program for modeling diameter distributions. It's capabilities include fitting "q" distributions to stand level and tree level data. In addition, you can fit two- and three-parameter Weibull distributions and their size-biased counterparts. Size-biased Weibulls arise from sampling with an angle gauge on along a line (horizontal line sampling) or a point (horizontal point sampling). The program is written for MicroSoft Windows platforms and has a full graphical user interface.

  • COLE is an effort to make forest carbon estimates easily accessible through a graphical analysis tool. More importantly, COLE should allow the user to harness that data, and use it in a number of complex queries involving estimates of sequestered carbon.

  • FIBER Forest Increment Based on Ecological Types. An individual-tree, distance-independent stand matrix growth model for northeastern forest types.

  • FOREGEN is a simulator that models the regeneration of openings in northern hardwood stands varying in size from 2,000x2,000-foot clearcuts down to single-tree openings of 25x25 feet.

  • Pipestem is a model of carbon allocation and growth that applies to even-aged, mono-specific stands of trees. A detailed description of Version 2 of the model can be found in Canadian Journal of Forest Research, 27:817-830 (1997). Pipestem has been calibrated for loblolly pine in Virginia and North Carolina.

  • Spectral corrections can be used to calculate the high and low frequency spectral corrections needed with eddy flux data. It implements the equations in Massman 2000 and 2001 (Agricultural and Forest Meteorology 104:185-198 and 107:247-251) using the spectral model of Horst 1997 & 2000 (Boundary-layer Meteorology 82:219-233 and 94:517-520).

Carbon -- Questions and Answers

  • Carbon is a national policy issue because gases containing carbon are increasing in the atmosphere. These Greenhouse gases may effect climate change. (more information)