Dampak Pemanenan Kayu Berdampak Rendah dan Konvensional Terhadap Kerusakan Tegakan Tinggal di Hutan Alam (Studi Kasus di Areal HPH PT. Suka Jaya Makmur, Kalimantan Barat)

Abstract

The objective of the study was to know the degree of residual stand damages and opened areas caused by conventional timber harvesting and reduced impact timber harvesting in natural forest. The study showed that degree of residual stand damages based on tree population and stage of vegetation development in conventional timber harvesting and reduced impact timber harvesting is as follow : for seedlings 34.42 % and 23.17 %, for saplings 35.13 % and 21.72 %, for poles and trees 33.15 % and 19.53 %. Based on the size injury of every individual tree, the degree of the trees damages caused by timber harvesting in conventional timber harvesting and reduced impact timber harvesting is as follow : trees heavy injury 64.66 % and 57.20 %, trees medium injury 20.30 % and 24.00 % and trees light injury 15.03 % and 18.80 %. The degree of opened caused by conventional timber harvesting is 32.47 % compared with reduced impact timber harvesting which is only 18.32 %. The results of studies research indicated that the residual stand damages and opened area caused by conventional timber harvesting is heavier and larger than reduced impact timber harvestig.