Abstract:
The purposes of this research were to study the land use change, the relationship between geographical factors affecting land use and compare models to forecast land use change. It is conducted by using CA-Markov model, CLUMondo model, GEOSOS-Flus model, Chiang Rai province in A.D.2000, A.D.2005, A.D.2010, A.D.2015 - A.D.2020. Land uses are classified into 7 categories: Paddy field area, Grass area, Perennial area, forest area, miscellaneous land, urban area, water body. The finding of land use changes found that land use tends to increase, are Perennial area, urban area, water body. The areas that have a tendency to decline every year are forest areas, miscellaneous land. Paddy field area tends to increase in A.D.2005, A.D.2018 and tends to decrease in A.D.2010, A.D.2015-A.D.2020 and grass area there is a tendency to increase in A.D.2010, A.D.2018-A.D.2020, and it tends to decrease in A.D.2005, A.D.2015-A.D.2017. The study of the relationship between geographical factors affecting land use revealed that the 7 of land use were related to almost all factors, There is only the rainfall, that is not related to the use of Grass area land use in A.D.2016, The miscellaneous land there are factors rainfall, stream, border trade, DEM (digital elevation model) and village, relative to miscellaneous land use every year. Comparing models for forecasting land use change, it was found that short-term forecast (every 1 year, 1 period), mid-term forecast (every 5 years, 5 periods), long-term forecasts (every 10 years, 10 periods). That overall accuracy 80.47-90.23, 82.03- 88.28, 81.64-83.20, and Kappa coefficients 74.74-86.71, 74.84-84.84, 76.44-78.21, respectively