1. General Model Information

Name: SouthPro


Main medium: all
Main subject: forestry
Organization level: Ecosphere, Landscape
Type of model: Matrix Growth Model, Markov chain, other
Main application: simulation/optimisation tool, decision support/expert system, research
Keywords: Loblolly pine, Pinus taeda, Uneven-aged, Selection, Management, Economics, Growth model, Diversity


Jingjing Liang
Room A141, Russell Lab, 1630 Linden Drive,
Madison, WI 53706
Phone: 608-263-5574
email: jliang2@wisc.edu
Homepage: http://www.forestmodel.com


Benedict Schulte, Joseph Buongiorno, Ching-Rong Lin


SouthPro is a Microsoft Excel add-in program that simulates the management, growth and yield of uneven-aged loblolly pine stands in the Southern United States. Its built-in growth model was calibrated from 991 uneven-aged plots in seven states, covering most growing conditions and sites. Stands are described by the number of trees in each of 13 size classes, for softwood, soft hardwood, and hard hardwood species. SouthPro allows managers to predict stand development, by year and for many decades, from a specific initial diameter distribution. Cutting regimes are specified by the timing and intensity of harvest. Cutting intensity can be set by a free target distribution, a BDq target distribution, or as a diameter-limit cut. Tabulated and graphic results show diameter distributions, basal area, volumes, income, net present value, and stand diversity by species groups and size classes. This manual describes the SouthPro program. It provides suggestions for working with Excel, describes program installation and activation, and gives background information on SouthPro’s growth model. It offers a comprehensive tutorial that explains how to start the program; enter simulation data; generate BDq distributions; add, delete, and retrieve setup files; execute single simulations and batches of simulations; plot summary statistics; and produce stock-and-cut tables and marking guides. It also discusses limitations of the model and appropriate interpretations of its predictions.

II. Technical Information

II.1 Executables:

Operating System(s): WIN 98-XP
ForestModel.com -- SouthPro (free download)

II.2 Source-code:

Programming Language(s): VBA (Visual Basic for Applications), Excel
contact Authors for more detailed information

II.3 Manuals:

SouthPro: A Computer Program for Uneven-aged Management of Loblolly Pine Stands
ForestModel.com -- SouthPro (WORD doc)

II.4 Data:

see II.1

III. Mathematical Information

III.1 Mathematics

see SouthPro Manual

III.2 Quantities

III.2.1 Input

see SouthPro Manual and
ForestModel.com -- SouthPro, examples

III.2.2 Output

see SouthPro Manual

IV. References

Anon. 1994-1995. Forest Survey Inventory Work Plan: Arkansas 1994-1995.
Forest Inventory and Analysis Research Work Unit, USDA Forest Service, Southern Forest Experiment Station, Stakville, MS. 61 p.

Baker, J.B. 1986. The Crossett Farm Forestry Forties after 41 years of selection management.
Southern Journal of Applied Forestry, 10(4): 233-237.

Baker, J.B. M.D. Cain, J.M. Guldin, P.A. Murphy, and M.G. Shelton. 1996. Uneven-aged Silviculture for the Loblolly and Shortleaf Pine Forest Cover Types.
General Technical Report SO-118. Asheville, NC: USDA Forest Service, Southern Research Station. 65 p.

Baker, J.B., and P.A. Murphy. 1982. Growth and yield following four reproduction cutting methods in loblolly-shortleaf pine stands.
Southern Journal of Applied Forestry, 6(2): 111-117.

Buongiorno, J., S. Dahir, H.-C. Lu, and C.-R. Lin. 1994. Tree size diversity and economic returns in uneven-aged forest stands.
For. Sci. 40(1): 83-103.

Farrar, R.M., Jr., P.A. Murphy, and R. Colvin. 1984a. Hope Farm Woodland: 33-year production and yield in an uneven-aged loblolly-shortleaf pine stand.
Journal of Forestry, 82(8): 476-479.

Farrar, R.M., Jr., P.A. Murphy, and R.L. Willett. 1984b. Tables for Estimating Growth and Yield in Uneven-Aged Loblolly-Shortleaf Pine on Average Sites in the West Gulf Area.
Bulletin 874. Fayetteville, AR: University of Arkansas, Arkansas Experimental Station. 21 p.

Farrar, R.M., Jr., T.J. Straka, and C.E. Burkhardt. 1989. A Quarter-Century of Selection Management on the Mississippi State Farm Forestry Forties.
Technical Bulletin 164. Mississippi State, MS: Mississippi State University, Mississippi Agricultural and Forestry Experiment Station. 24 p.

Grano, C.X. 1954.Re-establishment of shortleaf-loblolly pine under four cutting methods.
Journal of Forestry, 52: 132-133.

Lin, C.R., J. Buongiorno, J. Prestemon, and K. Skog. 1998. Growth Model for Uneven-aged Loblolly Pine Stands: Simulations and Management Implications.
Research Paper FPL-RP-569. Madison, WI: USDA, Forest Service, Forest Products Laboratory. 13 p.

Murphy, P.A., and R.M. Farrar, Jr. 1982. Interim models for basal area and volume projection of uneven-aged loblolly-shortleaf pine stands.
Southern Journal of Applied Forestry, 6(2): 115-119.

Murphy, P.A., and R.M. Farrar, Jr. 1983. Sawtimber volume predictions for uneven-aged loblolly-shortleaf pine stands on average sites.
Southern Journal of Applied Forestry, 7(1): 45-50.

Murphy, P.A., and R.M. Farrar, Jr. 1988. A framework for stand structure projection of uneven-aged loblolly-shortleaf pine stands.
Forest Science, 34(2): 321-332.

Murphy, P.A., and M.G. Shelton. 1994. Growth of loblolly pine stands after the first five years of uneven-aged silviculture using the single-tree selection.
Southern Journal of Applied Forestry, 18(3): 128-132.

Murphy, P.A., and M.G. Shelton. 1996. An individual-tree basal area growth model for loblolly pine stands.
Canadian Journal of Forest Research, 26: 327-331.

Reynolds, R.R. 1959. Eighteen Years of Selection Timber Management on the Crossett Experimental Forest.
Technical Bulletin 1206. Washington, DC: U.S. Department of Agriculture. 68 p.

Reynolds, R.R. 1969. Twenty-Nine Years of Selection Timber Management on the Crossett Experimental Forest.
Research Paper SO-40. New Orleans, LA: USDA Forest Service, Southern Forest Experiment Station. 19 p.

Reynolds, R.R., J.B. Baker, and T.T. Ku. 1984. Four Decades of Selection Management on the Crossett Farms Forestry Forties.
Bulletin 872. Fayetteville, AR: University of Arkansas, Division of Agriculture, Agricultural Experiment Station. 40 p.

Schulte, B.J. 1997. The SouthPro Computer Program: Effects of Uneven-aged Silviculture on the Stand Structure, Species Composition, and Economic Returns of Loblolly Pine Stands.
M.S. thesis. University of Wisconsin – Madison. 199 p.

Schulte, B.J., and Buongiorno, J. 1998. Effects of uneven-aged silviculture on the stand structure, species composition, and economic returns of loblolly pine stands.
Forest Ecology and Management (In press).

V. Further information in the World-Wide-Web

VI. Additional remarks

Last review of this document by: : Mon Dec 8 22:25:09 2003
Status of the document: Contributed by Jingjing Liang
last modified by Joachim Benz Fri Dec 12 18:36:40 CET 2003

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