Analysis Of Biomass On Reclamation Area Of Ex-Coal Mining Ptba Ombilin, Sawahlunto City, 1991 And 2001 Planting Year

Pearenca Nasyrah, Chairul Chairul, Erizal Mukhtar

Abstract


PT Bukit Asam Ombilin is one of the coal mines operatingin Indonesia and located in Sawahlunto City, West Sumatra Province. In carrying out its operations, PT BA Ombilin conducts a reclamation program on lands that are no longer disturbed by mining activities. The reclamation program is intended to restore forest conditions similar to the initial conditions and avoid erosion. In addition to this, of course, reclaimed forest also has a function as a store of carbon reserves. Carbon in plants is stored in the form of biomass. This study aims to measure the biomass content contained in the reclamation area of the former coal mine of PTBA Ombilin Sawahlunto City in 1991 and 2001 planting year. root. Measurement of litter and understorey biomass using the destructive sampling method. Making plots for laying samples using the transect method. The measured biomass components were stem diameter and height. The results of this study found that in the reclamation area of the 1991 planting year, there were 13 species in 7 families and 101 individuals with a total biomass of 134,187 tons/ha. Meanwhile, in the reclamation area in 2001, there were 10 species found in 9 families and 80 individuals with a biomass value of 108.11 tons/ha so that the total biomass in the reclamation area was 30 ha with a total area of 242.297 tons/ha. The results of this study found that in the reclamation area of the 1991 planting year, there were 13 species in 7 families and 101 individuals with a total biomass of 134,187 tons/ha. Meanwhile, in the reclamation area in 2001, there were 10 species found in 9 families and 80 individuals with a biomass value of 108.11 tons/ha so that the total biomass in the reclamation area was 30 ha with a total area of 242.297 tons/ha. The results of this study found that in the reclamation area of the 1991 planting year, there were 13 species in 7 families and 101 individuals with a total biomass of 134,187 tons/ha. Meanwhile, in the reclamation area in 2001, there were 10 species found in 9 families and 80 individuals with a biomass value of 108.11 tons/ha so that the total biomass in the reclamation area was 30 ha with a total area of 242.297 tons/ha.

 

Keywords: Coal, Biomass, Mining, Reclamation


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References


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DOI: http://dx.doi.org/10.52155/ijpsat.v31.1.4046

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