Correlation Analysis of Factors Influencing Changes in Land Use in the Lower Songkhram River Basin, the Northeast of Thailand

摘要

The goal of this research is to analyze land-use change and to study the relationship between physical and socio-economic factors which affect the land use change. The land use change was processed by interpreting the LANDSAT-5 TM and THAICHOTE MS data acquired in 2005 and 2011 respectively and using overlay analysis and dynamic model. The study of the relationship between environmental factors affecting the land use change was analyzed using a statistical tool, which is the Binary Logit Model. The results showed that the land use change from the year 2005 to 2011, the types of land use that had increased, were perennial plants, farm plants, and man-made water sources with the increased area of 2,618.92 (0.86%), 729.51 (0.24%), and 264.85 (0.09%) ha respectively. The type of land use that decreased were deciduous forest, tropical evergreen forest, and natural water sources with the decreased area of 2,391.51 (0.78%), 852.02 (0.28%), and 457.03 (0.15%) hectare respectively. The rate of the area change per year using the dynamic model shows that perennial plants, man-made water sources, and farm plants have the positive rates of change, which are 1.59, 0.71, and 0.54 respectively. On the other hand, natural water sources, deciduous forest, and tropical evergreen forest have slightly negative rates of change, which are 0.82, 0.77, and 0.60 respectively. The type of land use that has no change is salt pan. Based on the Binary Logit Model, the relationship between physical and socio-economic factors affecting the land use change expressed that population (P) and distance from the canal (St) are independent variables which have a negative relationship with the land-use change without 0.05 logistical significance. Height above mean sea level (SI), numbers of female (F), numbers of male (M), numbers of household (H), distance from road (T), and distance from village (V) are independent variables which have a positive relationship with the land-use change without 0.05 logistical significance.