1. General Model Information

Name: The growth model for uneven-aged mixed conifer stands in California

Acronym: CALPRO


Main medium: terrestrial
Main subject: forestry
Organization level: Landscape, Ecosystem
Type of model: Matrix Growth Model, other, Markov chain
Main application: simulation/optimisation tool, decision support/expert system, research
Keywords: Mixed conifers, Uneven-aged Management, Economics, Ecology,Growth model, Diversity

Contact:

Jingjing Liang
Room A 141, 1630 Linden Dr., Madison, WI 53706

Phone: 608-263-5574
Fax:
email: jliang2@wisc.edu
Homepage: http://www.forestmodel.com

Author(s):

Jingjing Liang and Joseph Buongiorno

Abstract:

CalPro is a Microsoft Excel add-in program to simulate the growth and management of uneven-aged mixed conifer stands in California. Its built-in growth models were calibrated from 177 uneven-aged plots in California. Stands are described by the number of trees per unit area in each of 19 size classes in the following species groups: hardwood and softwood. CalPro allows managers to predict stand development by year and for many decades from a specific initial state. Users can choose cutting regimes by specifying the interval between harvests (cutting cycle) and a target distribution of trees remaining after harvest. A target distribution can be a BDq distribution or any other desired distribution. Diameter-limit cuts can also be simulated. Tabulated and graphic results show diameter distributions, basal area, volumes, income, net present value, and indices of stand diversity by species and size.


II. Technical Information

II.1 Executables:

Operating System(s): · Windows® 95,98, 2000, Me, XP, or Windows NT™ 4
ForestModel.com -- CalPro (free download)

II.2 Source-code:

Programming Language(s): VBA (Visual Basic for Applications), Excel

II.3 Manuals:



II.4 Data:



III. Mathematical Information


III.1 Mathematics


III.2 Quantities


III.2.1 Input

III.2.2 Output


IV. References



V. Further information in the World-Wide-Web


VI. Additional remarks


Last review of this document by: : Mon Jan 26 20:53:36 2004
Status of the document: Contributed by Jingjing Liang
last modified by Joachim Benz Mon Feb 9 15:09:09 CET 2004

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