Mapping land covers/uses in Tung Kula Ronghai using geoinformatics

Abstract

Information on land cover/use is essential for land use planning. In this study, the geoinformaticstechnology was used to generate this information for Tung Kula Ronghai. The study included 2 steps. The first stepwas mapping of land covers/uses by using LANDSAT-5 TM data acquired in the transition between rainy and dryseasons. A remote sensing technique based on an integration of visual interpretation and digital analysis was appliedfor this purpose. The resultant map included 4 classes, i.e., paddy, forest, settlement, and water body. The second stepwas an improvement of the map previously generated in step 1. In this step 2, other classes (i.e., road and stream)were added to the preliminary map from step 1, in a geographic information system. Data on these 2 classes wereobtained from the vector maps produced by the Royal Survey Department. The results showed that the land cover/use map of Tung Kula Ronghai consisted of paddy 81.53%, forest 7.34%, settlement 2.51%, water body 0.90%, road6.21%, and stream 1.51%. Assessment of mapping accuracy indicated that the map was highly accurate with KAPPAstatistic (KHAT) = 0.9739 and Overall Accuracy = 97.68%. Moreover, for each individual class, Producer’sAccuracy and User’s Accuracy were > 90%.