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Nong Chok.
LAND USE CHANGE DYNAMICS IN PERI-URBAN AREA OF BANGKOK
Sk. Morshed Anwar ( Asian Institute of Technology, Bangkok, Thailand)
![](../../images/applica/animNongChok.gif)
It is important to study the driving forces of land use
change to understand the change process. Spatially explicit simulation
models help to test hypotheses about landscape evolution under several
scenarios. This research presents a dynamic simulation model of land use
change of Nong Chok area, Central Thailand. Simulation of land use change
has been performed integrating remote sensing, Geographical Information
Systems (GIS) and dynamic simulation toolkit.
The methodology of this research consists of following three
phases :
· Land use change analysis,
· Development of the model, and
· Validation of the model.
The model
The model has been developed based on s elected
biophysical and human driving forces. It is a cellular automata model
that presents vicinity based transitional functions. The study was conceived
for the simulation of land use change dynamics, in particular from paddy
fields to fishponds. The model was run for 19 years from 1981-2000. Data
describing present and historic land use pattern were derived from aerial
photographs. Transition functions were developed following entropy calculation
by using ID3 algorithm of the land use change datasets. The model uses
as its input a land use map (1981), spatial and human variables: distance
to canal, age, ownership, religion, education, and family size of the
farmers before the simulation starts. The result of the simulation showed
considerable performance of the model to diffuse fishponds except few
mismatches.
![](../../images/applica/NongChokResult.jpg)
Model description
To
validate this spatial simulation model of land use change dynamics, the
simulated maps were compared with the reference land use map (2000) using
a set of landscape indices: number of fishpond cells, patch density, mean
patch size, edge density, fractal dimension, and mean nearest neighborhood.
Further investigation by integrating other variables might allow the model
to simulate land use change with greater accuracy
References
SK, Morshed Anwar, LAND USE CHANGE DYNAMICS: A DYNAMIC SPATIAL
SIMULATION, AIT master dissertation, School of Advanced Technologies,
Bangkok, November 2002
For more information, download the
thesis, or contact the author Sk
Morshed Anwar
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