1. General Model Information
Name: Land Transformation Model
Acronym: LTM
Main medium: terrestrial
Main subject: population dynamics, agriculture
Organization level: Landscape, Socio-Ecosystem
Type of model: neural network, not specified (2D), other,
Main application: simulation/optimisation tool, research
Keywords: urban sprawl, land use, agricultural loss
Contact:
Bryan C. Pijanowski
203 Natural Science Building,
Michigan State University,
East Lansing, MI 48824
Phone: 517-432-0453
Fax: 517-432-2789
email: pijanows@msu.edu
Homepage: http://www.ltm.msu.edu
Author(s):
Bryan Pijanowski
Abstract:
The Land Transformation Model uses GIS, neural networks and C program processing tools to numerically related
spatial drivers of land use change to transition cells. The model is flexible in that any general type of
spatial database can be used (roads, DEMs, soils, rivers, lakes) as input to the model. The model requires
a small training set of land use/cover databases to develop the neural net weights and activiation values.
A set of sensitivity analysis tools are also incorporated into the model. These include variable sensitivity,
spatial and temporal generalization tools and spatial variable interaction tools.
All programs are integrated using a Visual Basic interface and xml parameter database.
II. Technical Information
II.1 Executables:
Operating System(s): Windows
http://www.ltm.msu.edu
II.2 Source-code:
Programming Language(s): C, SNNS, VB
II.3 Manuals:
LTM Users Guide
http://www.ltm.msu.edu
II.4 Data:
transportation, population, surface water bodies (lakes and rivers), political boundaries are typical inputs
III. Mathematical Information
III.1 Mathematics
III.2 Quantities
the model uses a set of spatial rules to establish likely spatial itneractions bwteen the drivers and transition cells
III.2.1 Input
land use from two periods, and socioeconomic and biophysical GIS layers listed above
III.2.2 Output
land use transition probabilities, land use states
IV. References
see http://www.ltm.msu.edu/references.html
V. Further information in the World-Wide-Web
VI. Additional remarks
Last review of this document by: Wed Jun 26 14:59:45 2002
Status of the document: Contributed by Bryan Pijanowski
last modified by
Tobias Gabele Wed Aug 21 21:44:45 CEST 2002