Relationship between land use and coastline change in Phetchaburi and Prachuap Khiri Khan provinces as investigated by remote sensing technique

Abstract

Relationship between land use/land cover and coastline change in Phetchaburi and Prachuap Khiri Khan provinces was investigated by using remote sensing technique. Aerial photographs and Landsat-5 TM image from 1954 to 1994 were used for detection of coastline change and classification of land use/land cover. This study used logistic regression to evaluate the relationship between coastline change and 10 categories of land use/land cover, i.e. 1) high density built-up area, 2) built-up area, 3) beach area, 4) bare soil, 5) mangrove area, 6) vegetation: well develop, 7) vegetation: sparseness, 8) paddy field, 9) flood plain, and 10) inland water. The results showed that coastline change at any shoreline segment has significant relation with land use/land cover at that segment at significant value less than 0.2063. The high density built-up area always has high probability of erosion, while bare always has low probability of erosion. In analysis of relationship between coastline change at any shoreline segment with land use/land cover at that segment as well as the adjacent updift segment, it was found that the relation between land use/land cover with coastline changes could not be concluded. The logistic model did not exhibit any statistical relationship between individual of land use/land cover with the coastline change at significant value greater than 0.1581. When the model contained more land use/land cover variables by adding updrift land use/land cover information, the significance increased (P<0.005)