Judul: Inventarisasi Hutan Menyeluruh Berkala dalam Pengelolaan Hutan Produksi di Indonesia (Studi Kasus di Provinsi Papua)
Abstrak: The availability of data and information of forest resources plays an important role to determine the direction and clear targets in forest management at forest management unit (FMU) level. In order to preserve sustainable forest management at the sites level, management plans should be set with consideration of the entire ecosystem landscape while maintaining biological diversity and productivity as well as regeneration ability in sustaining life and potential to fulfill functions of the ecological, economic and social for current time and the future. The periodic comprehensive forest inventory (Inventarisasi Hutan Menyeluruh Berkala called IHMB) is Indonesian forest stands inventory were based on compartment at forest effective area of forest management unit (FMU). The purpose of this study is to get information about the suitability and accuracy of the IHMB implementation results to arranging long-term forest management plans (rencana kerja usaha pemanfaatan hasil hutan kayu pada hutan alam called RKUPHHK-HA) in order to forest management that aims to produce sustainable timber. Data gathered with purposive sampling technique with location consideration is the FMU that have been implemented of IHMB and the results has been evaluated and verified by the Ministry of Forestry and Forestry Provincial Office. Sampling plot of IHMB is carried out with consideration: forest cover stratification, accessibility, time and cost. The results of IHMB implementation that contain the availability potentially standing stock and other general information can not be uses as a basis to preparing a forest management plan with the aims of generating sustainable timber with the sustainability forest principles. At the FMU level, the long-term forest management (RKUPHHK-HA) which contains goals and objective of the activity that based on comprehensive data and information covering the aspect of ecological, economic and social. The sense of word “comprehensive” on IHMB is meaningfully only covered the forest area, without including all components of the data and information on forest ecosystem. The data result of IHMB implementation is uses as a basis to arranging RKUPHHK-HA, meanwhile in the short-term forest management (rencana kerja tahunan usaha pemanfaatan hasil hutan kayu pada hutan alam called RKTUPHHK-HA) is implemented by the stage of silvicultural system (tebang pilih tanam Indonesia called TPTI).
Keyword: IHMB, sustainable forest management, forest management plan, forest management unit

Judul: Pemanfaatan SIG dalam pemetaan penyebaran potensi hutan berbasis IHMB di IUPHHK-HA PT. Ratah Timber, Kalimantan Timur
Abstrak: Comprehensive Periodic Forest Inventory (IHMB) is a ten-year periodic forest inventory for establishing business plan of forest utilization, which had to be done by Business Utilization Timber Forest Product in Natural Forest (IUPHHK-HA) and Plantation Forest (IUPHHK-HT) permit holders based on Government Regulation No. 6 of 2007. PT. Ratah Timber as a business license holder of Business Utilization Timber Forest Product in Natural Forest (IUPHHK-HA) requires preceding IHMB for establishing Ten-Years Natural Forest Business Plan for Timber Forest Product Utilization. IHMB with sampling concept reducing data measurement area to small certain surveyed area. Spatial distribution of timber potential from overall IHMB area, which in some compartment is not represented, may be estimated using spatial interpolation using GIS from data that obtained in survey plots. This research intend to estimate forest standing stock, establishing map of timber volume and tree profile, and analyzing forest timber potential in PT. Ratah Timber, East Kalimantan. IHMB tabular data processing shows that more that 60% of standing stock in PT. Ratah Timber belongs to Kayu Meranti (KM) class in all trees growing class (pole, small trees and large trees). Largest tree density is available at pole class by 206 poles/ha, meanwhile largest volume is available at large tree class by 146,73 m3/ha and overall standing quality is considered good based on its tree quality. IHMB spatial data distribution shows that PT. Ratah Timber has the largest area or compartments in lowest class potential. Spatial distribution map for large trees inform that largest compartment aggregated at 0-24 N/ha and 0-146.6 m3/ha in density and volume distribution classes. Potential analysis and tree spatial distribution overlay for 50 cm up commercial tree diameter shows normal standing structure condition, in spite of its potential condition was not too high, about 79,8% of PT. Ratah Timber area only having 0-28 trees/ha tree density with 0-279,6 m3/ha standing volume.
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Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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