Landscape Function of Post Tin-Mining Land After Reclamation in Bangka, Indonesia

Abstract

Tin mining has a negative impact on the environment of Bangka, Indonesia. Efforts have being conducted to reclaim post tin-mining lands. However, the ecological function of the land have not been evaluated. The objective of this research was to assess the landscape function of post tin mining lands in Bangka. This researchwas conducted at three location that represented the tin mining conditions in Bangka. The landscape function analysis(LFA)was performed in each location for three types of land (A: unreclaimed tin-mining, B: reclaimed tin-mining, C: natural forest, as reference site). The results of LFA showed similar pattern for stability index among locations. The highest stability index (> 60%) occured at land C. On the other hand, the post tin mining area, land A and land B have low stability index (less than 38%). The infiltration index, high (>59%) in land C, low (33-36%) in land A and B).The nutrient cycling index also showed a value comparable to the stability index of land and infiltration index. It could be concluded that the post tin-mining landshas critical landscape function.However, by planting trees for reclaiming the area gradually improved the function of the post tin mining landscape.