Judul: Integrasi Neraca Tegakan dan Karbon ke Dalam Perhitungan Produk Domestik Regional Bruto Sektor Kehutanan Kabupaten Blora
Abstrak: Forestry sector plays an important role in the economic of Blora Regency.During 2003-2010 period, this sector made significant contribution to the regional economic in term of income, average 14,48% of Gross Regional Domestic Product (GDRP). This figure doesn’t reflect the true contribution of forest resource to regional income and wellbeing because this measure excluded the depletion of the resources to generate the amount of value of product as stated in conventional account using standart and existing accounting framework. The main objective of this study is to develop and use a forest resources accounting framework to correct indicator of economic performance derived from the System of National Account for the true contribution of forestry sector GRDP in Blora Regency, Central Java Province. This study address two components of value creation in forest: timber production and carbon storage. To estimate the value of timber assetss this study applied two valuation methods: the net price and El Serafy user cost methods. The valuation of benefit of forest for carbon sequestration in this study using the damage cost approach, that’s the estimation of the global damage from climate change averted by reducing. The study showed that accounting for net accumulation of timber and carbon stock in forested land was approximately 20,24% of contribution from forestry sector to GRDP during 2003-2010 period. By including the value of timber and carbon depreciation, forestry sector’s share was corrected about 2,87% lower than conventional account.
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Judul: Estimation of Indonesia's Environment Gross Domestic Product on Forestry Sector
Abstrak: Sektor kehutanan merupakan salah satu sektor yang berkontribusi terhadap Produk Domestik Bruto (PDB) Indonesia. Nilai yang dihasilkan sektor kehutanan berasal dari nilai produksi hasil tebangan kayu dan tidak memperhitungkan kerusakan lingkungan berupa deplesi dan degradasi akibat penebangan pohon. Nilai kerusakan lingkungan tidak tercerminkan dalam PDB sehingga diperlukan PDB lingkungan hidup sektor kehutanan untuk memperhitungkan nilai kerusakan lingkungan tersebut. Penelitian ini bertujuan untuk: (1) mengestimasi deplesi sumberdaya hutan, (2) mengestimasi degradasi sumberdaya hutan, (3) mengestimasi PDB lingkungan hidup sektor kehutanan di Indonesia. Metode analisis yang digunakan pada penelitian ini adalah net price method, analisis kuantitatif, dan benefit transfer. Hasil penelitian menunjukkan bahwa pada periode 2014–2018 deplesi sumberdaya hutan menunjukkan trend yang meningkat, sementara degradasi sumberdaya hutan dan PDB lingkungan hidup menunjukkan trend yang menurun. Pada tahun 2018 deplesi dan degradasi sumberdaya hutan adalah Rp10.039,36 miliar dan Rp761,18 miliar, serta PDB lingkungan hidup Indonesia untuk sektor kehutanan di tahun 2018 sebesar Rp52.181,46 miliar., The forestry sector is one of the sectors that contributes to Indonesia's Gross Domestic Product (GDP). The value generated by the forestry sector comes from the production value of timber harvested and did not calculate the environmental damage such as depletion and degradation due to felling of trees. The value of environmental damage is not reflected in GDP so that environment GDP of the forestry sector is needed to calculate the value of environmental damage. This research aimed to: (1) estimate the depletion of forest resources, (2) estimate the degradation of forest resources, (3) estimate environment GDP of the forestry sector in Indonesia. The analytical method used in this research is net price method, quantitative analysis, and benefit transfer. This research showed that in the 2014–2018 period, the depletion of forest resources showed an increasing trend, while the degradation of forest resources and Indonesia’s environment GDP on forestry sector showed a decreasing trend. In 2018, the depletion and degradation of forest resources were IDR10.039,36 billion and IDR761,18 billion, and Indonesia's environment GDP for the forestry sector was IDR52.181,46 billion.
Keyword: agroforestri, deforestasi, degradasi, deplesi, depresiasi

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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