Comparative Study on the Application Reduced Impact Logging/RIL in Riau and ]ambi

The technique of reduced impact logging is considered to increase felling productivity and decrease production cost. Study was carried out on 2009 in two forest companiesin Riau and Jambi. Theaims of thesffltly are tofind out the effect of RIL implementation on productivity, produaion cost and timber utilization efficiency (IVE). Observations made on were log volume,felling time and operational cost of RIL in comparison with those of the local techniques.Replication consistedof 15 treesfor each technique. Data were the nanalyzed usingt-test procedure. Study results showed that implementation of RIL technique in peat swamp forest plantation could: 1) increase productivity about 0.328 m3/bour (Riau) and 0.982 n/ /hour (ambi); 2) decrease production cost approximatefy Rpt,767.1,-/ m'(jambi) and Rp 518.6,-/ n/ (Riau);3)increase TIJE about 7.9% similar to Rp 25,438,000,000,-/year (]ambi)and 5.6%similarto Rp 15,680,000,000,-/year(Riau). The above characteristics clearfy indicated that the RIL applicationin Jambi is beterthan that in Riau.