Development of Line Intersect Method for Logging Residue Assessment of Teak

Abstract

Line intersect method (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 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 teak plantation. Circular and rectangular plot were used to validate the measurement of LIM's on predicting the total residual log volume. A hundred percent logging residue inventory was carried out on each plot. The LIM is modified to carried out the designs, 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 the estimation of logging residue total volume using LIM was biased and tended to overestimate. LIM design with two lines combination per plot have higher precision estimation. These two designs simply involved two intersect lines laid in plot as sampling unit. However, the two intersect lines laid in the square shaped plot gave was applicable to implemented as method in assessing logging residue of teak plantation

Keywords

• design
• line intersect method
• logging residue
• teak plantation