Abstract
Line i ntersect m ethod (LIM) emerged as one of the effective and efficient post-harvesting assessment methods. LIM was being widely used to estimate logging residue of plantation forest in the temperate zone. This method has not been used in tropical forest plantations, including teak forests. The study was carried out to determine the best design of LIM for assessing logging residue in the teak plantation. The circular and rectangular plot was used in this study. A hundred percent logging residue inventory was carried out on each plot. Then, one and combination of two and three line intersects per plot were placed on each plot. Bias, precision and accuracy criteria were calculated in order to compare the designs. The study found that estimation of logging residue volume using LIM was biased and tended to overestimate. LIM design with two lines combination per plot was the best design for assessing logging residue of the teak plantation .
Highlights
Forest inventory is an important activity in sustainable forest management
The study results showed that the density of logging residue on sub-compartment 6A amounted to 2.93 m3 ha-1, with a tree-felled density of 36 trees ha-1
The entire teak trees was skidded by a tractor to log yard, so the residual log remains on the logging plots has small diameters
Summary
Forest inventory is an important activity in sustainable forest management. One of the important inventory activities is that of the logging residue. The logging residue results from a silvicultural activity, namely forest thinning and harvesting. Accurate information of logging residue inventory is needed to support sustainable forest management (Tiryana et al 2011; Bouriaud et al 2013). Perum Perhutani applies a clear-cut silvicultural system with an artificial regeneration in the management of teak production forests. Supervision of logging and assessment after logging (post harvesting assessment) are needed to ensure forest from sustainability. Perum Perhutani faced sustainable issue in their forest management (Tiryana 2016). Logging residue inventory is one of the activities in post-harvesting assessment and it hasnot been carried out yet by Perum Perhutani (Perum Perhutani 2008). Logging residue in Perum Perhutani commonly utilized as fuel by rural communities surrounding teak forests. The information about potential logging residue is important for environmental and social reason in sustainable forest management
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