Pengaruh Penyaradan Kayu dengan Traktor Rantai Kelabang terhadap Kerusakan Tegakan Tinggal

The study of the effect of log skidding on the damage of residual stand was carried out in one logging company in West Kalimantan in 1986. The meaning of residual stand in the study are trees with diameter 20 cm and up. The result of the study shows that the average damage of residual stand is 18% per hectare, not included the damage caused by felling i.e. 15% per hectare. According lo Indonesian Selective Cutting System, the residual stand is good enough to fulfill the sustained yield condition, that is keep at least 25 core trees to be left per hectare. The role of skidded trees number and stand density was significant effect on the residual stand damage

Pengaruh Penyaradan Kayu dengan Traktor Rantai Kelabang terhadap Penggeseran dan Pemadatan Tanah Hutan

The study of the effect of log skidding by crawler tractors on forest soil displacement and compaction wall carried out in one logging company in West Kalimantan in 1986. The results of the study are as the following :The average volume of soil displacement was 0.06 cu.m/m of skid road, it i6 equal to 0.061 ton/sq.m. This level of soil displacement iis higher than the soil loss tolerance of 0.0002 ton/sq.m.Soil compaction as indicated by the average soil bulk density is 0.16 g/cu.cm. At this level of compaction, the porosity is 56% (far higher than 10% minimum porosity), which means that the growth of vegetation will be still favourable.The role of soil water content and slope on forest soil displacement was positively significant. The role of skidding intensity on forest soil compaction was positively significant and the role of soil water content and slope on forest soil compaction was negatively significant