ABSTRACTOil palm plantations at peatland are faced with problems of land degraded, low productivity and produced to green hause gas (GRG) emission. The objectives of this study were to land clearing effect of peatlands and to identify factors that affect the peatlands in the biophysical characteristics. This studi was conducted on District Bengkalis-Riau at marine and brakish peat. The data was collected using field survey and documentation. The descriptive analysis was used to ditermine biophysical characteristics and linier regresion was used to corelation perform important factors. The results of this study indicated that the biophysical characteristics peatland changed on the horizon profile, the thickness of the peat, the level of decomposition, water content, ash content, pH, C-organic and biomass. Water level as factor was changed at peatlands the biophysical characteristics
