Forest Management Plan - Sabah Forestry Department

APPENDIX BSPECIES LIST FOR SILVICULTURAL OPERATIONSThis schedule of species is intended for use in silvicultural activities in the mixeddipterocarp forest, namely in timber stand improvement. It is meant to help thesilviculturist to make situational decisions that would favour the establishment ofspecies of known commercial value. Those species not on the list are not necessarilyeliminated from managed forests. They merely do not get ‘favoured’ treatment, and aredestroyed only if they interfere directly with selected PCTs.The preferred and acceptable species are 2 categories from which PCTs are selected. Inthe absence of preferred species, acceptable species may be selected as PCTs.Preferred species are those species of generally high value, fast growth, good timberform, and large maximum attainable sizes. The dipterocarps are mainly listed aspreferred species. However, species in the genera Vatica and Hopea are listed asacceptable mainly because of their slower growth and generally smaller maximumattainable diameter compared with the rest of the dipterocarps.The protected species are species neither be removed to favour the growth of PCTs norshould they be specially liberated to promote their own growth. However, those specieswith dual listings are exceptions. Durian, for instance, is listed as both a protectedspecies and a preferred species. Such species may be selected as PCTs and liberatedaccordingly. The protected species list consists mainly of fruit trees important as foodsources for wildlife. This category is a technical designation and not a legislativedesignation enforceable by law. Much remains unknown about the silviculture, ecology,and utilization of many tree species. Therefore, this list will need to be reviewed fromtime to time to incorporate new information.PREFERRED SPECIESDipterocarpsAnisoptera spp.Pengiran spp.Dryobalanops lanceolataKapur pajiD. keithii Kapur merahDipterocarpus spp.KeruingHopea sangalGagilParashorea tomentellaUrat mata beludu