Multitemporal Analysis of Vegetated Land Cover Changes Related to Tin Mining Activity in Bangka Regency Using Landsat Imagery

摘要

Tin mining is one of the main sectors of the national economy where the Bangka Regency is the largest tin producer inIndonesia. However, this sector cannot be separated from the pros and cons for a long time. In a way, this sector canincrease both national and regional income but on the other side, the adverse effects of it can threaten the survival ofhumans and the environment. Open tin mining activity has converted previously vegetated land cover become the nonvegetatedland cover. Furthermore, the land cover changes to the mining area have a major impact on global warmingwhich has become an international issue in the past few decades. This research aims to map and measuring land coverchanges especially from vegetated to non-vegetated land cover related to tin mining activity in Bangka Regency. Thisresearch using multi temporal Landsat imagery data acquisition in the year 2004 (Landsat 5 TM) and 2017 (Landsat 8OLI) through digital image processing using Maximum Likelihood Classifier method. Previously, the image as aclassification input through relative radiometric normalization. The result shows that tin mining activity in Bangka regencyfor thirteen years causes an area reduction in vegetated land cover. These results are expected to be an important input inpolicymaking for local governments to support the action plan which leads to mitigation of climate change.