Geographic Information System Application for Valuations of Land Expropriations

Abstract

This research aims to study the application of geographic information system (GIS)
for land expropriations. The conventional method and GIS application were employed to
evaluate expropriated land plots for areas of the three highway projects in Chiengrai,
Phra Nakhon Si Ayutthaya, and Chumporn. Investigations into the effects of land plots’ sizes and
terrains on the accuracy of GIS application were also carried out. GIS application gave closer
approximation of the actual land plots’ areas specified in the land title deeds. The large land
plots and flat terrains gave the lower variation results than the small land plots and slope terrains.