Portal Conference FAHUTAN UNMUL, ISTFES 2018

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Model development of rehabilitation work at coal mined forest lands
TRIYONO SUDARMADJI

Last modified: 2018-09-28

Abstract


Coal mining operation in the forest lands causes a severe ecosystem disturbances both of structure and function, and therefore immediate post-mining land rehabilitation must be carried out. Post-mining ecosystem recovery was evaluated to determine the successfull phase and its potential recovery. This study was aimed to develop a simple and practical model of post-mining land rehabilitation in the forest ecosystem. The progress status of ecosystem recovery indicates re-establishing food chain of forest ecosystems based on the presence of herbivores - predators - carnivores even without the presence of top carnivores. Rehabilitation works modelling development was based on studies carried out at PT Trubaindo Coal Mining, PT Berau Coal, PT Santan Borneo Abadi, and PT Singlurus Pratama as the holders of IPPKH mining consession. In generall, coal mining exploitation was initiated with IPPKH legal standing for coal mining operation in accordance with mining technique, land tenure, tax payments, and no voids left policies. The next phase was mining operation of which closely related with surface runoff settling and ponding, soil erosion-sedimentation control measure, and land rehabilitation works consisting of consecutive reclamation and revegetation works. At the post mining phase, examination of rehabilitation works was applied covering landscaping, soil erosion-sediment control, and land revegetation. For the last phase, the structure and function of ecosystem was analysed by using animal wildlife as biological indicator to asses the status of forest ecosystem recovery.


Keywords


coal mining, ecosystem damage, land rehabilitation, ecosystem recovery, modeling