Abstract
<p>A goal of timber harvesting is to increase timber production through removing the timber from the forest using some harvesting techniques. A peatland is a fragile ecosystem and may degraded easily. Logging activities may adversely affect the soil compactness that disrupt the peat drainage system as well as cause subsidence, then ultimately may cause the sustainability of peat. This study was focused on examining the effect of timber harvesting acivities in peat forest plantation. The peatland damage may in the form of increased bulk density, water level fluctuations of peat (TMA), subsidence, irreversible and carbon emissions. The objective of the study is to find out the effect of timber harvesting in peatland plantations to peat water fluctuations and subsidence. The results showed that logging activites caused : (1) The average of water table and water level are about 1.03 and 0.967 m; and (2) Subsidence about -8 to -12.5 cm with the average is -11.0 cm. </p>
Highlights
Activities of timber harvesting in plantation forests intend to cope with the needs for continually supplying wood raw materials for pulp and paper industries
For facilitating and enabling the timber harvesting activities in peatland areas, forest companies commonly build a canal for transportation
height of peatwater surface (HPWS) on the cutting plot and the canal each exhibited average water fluctuation at 1.030 m and 0.967 m consecutively. Those figures suggested that water-surface elevation level on the cutting plot was referred to as low, and there already suffered from great fluctuation of HPWS
Summary
Activities of timber harvesting in plantation forests intend to cope with the needs for continually supplying wood raw materials for pulp and paper industries. Are those activities performed at mineral areas, and carried out at peatland areas. The timber harvesting at peatland area that conducted in arbitrary ways may bring about substantial and severe damage to the vegetation and peatland themselves. For facilitating and enabling the timber harvesting activities in peatland areas, forest companies commonly build a canal for transportation. Besides for transportation, the canals are beneficial for water management, thereby enabling the vegetation to grow well.
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