Judul: Valuation of Fire severity in Mount Lawu Forest, BKPH Lawu Selatan, KPH Lawu Ds, East Java
Abstrak: Selama beberapa tahun terakhir, hutan Gunung Lawu yang terletak di perbatasan antara Jawa Tengah dan Jawa Timur mengalami kejadian kebakaran hutan. termasuk kejadian pada tahun 2019 yang dikhawatirkan dapat merusak ekosistem di kawasan tersebut. Tujuan dari penelitian ini adalah untuk menilai tingkat keparahan kebakaran hutan Gunung Lawu menggunakan metode fire severity. Penelitian ini menggunakan karakteristik kondisi vegetasi dan kondisi tanah sebagai indikator penilaian. Plot yang dibangun di lokasi hutan terbakar dan tidak terbakar masing-masing berjumlah tiga jalur dengan setiap jalur terdiri dari 3 plot berukuran 20 m x 20 m. Hasil penelitian ini menunjukkan perbedaan pada kondisi vegetasi dan kondisi tanah di dua lokasi pengamatan. Perbedaan pada kondisi pohon meliputi perbedaan jumlah pohon hidup, lokasi kerusakan pada pohon, jenis kerusakan pada pohon, nilai indeks keanekaragaman jenis (H’), dan nilai kemerataan jenis (E). Perbedaan pada kondisi tanah meliputi nilai bulk density, pH, KTK, dan ketersediaan katioan basa (K, Na, Ca, Mg). Berdasarkan penilaian fire severity kebakaran hutan yang terjadi di hutan Gunung Lawu, BKPH Lawu Selatan, KPH Lawu Ds, Jawa Timur termasuk dalam kategori sedang, dengan total skor 58,3., Over the last few years, Gunung Lawu forest, which is located on the border between Central Java and East Java, has experienced forest fires, included in 2019, which could damage the ecosystem in the area. This research aims to assess the severity of Gunung Lawu forest fires using the fire severity method. This research uses the characteristics of vegetation conditions and soil conditions as indicators of assessment. The plots that were built in the burned and unburned forest consisted of three lanes each with each lane consisting of 3 plots 20 m x 20 m. The results of this study indicate tree and soil conditions differences in the two locations. The differences in vegetation condition include the difference in the number of living trees, the damage location, the types of damage, the diversity index value (H '), and the evenness value (E). Differences in soil conditions include bulk density, pH, CEC, and availability of alkaline ratio (K, Na, Ca, Mg). Based on the fire severity assessment of in Mount Lawu forest fire, BKPH Lawu Selatan, KPH Lawu Ds, East Java, it is classified in the medium category, with a total score 58,3.
Keyword: Fire Severity, Mount Lawu, Soil Condition, Vegetation Condition

Judul: Fire Control System in Gunung Walat Education Forest, Sukabumi, West Jawa
Abstrak: Kebakaran hutan terjadi setiap tahun di Indonesia dengan frekuensi, intensitas, dan luas areal terbakar yang berbeda. Hutan Pendidikan Gunung Walat (HPGW) termasuk ke dalam Kawasan Hutan dengan Tujuan Khusus (KHDTK) yang dikelola oleh Fakultas Kehutanan dan Lingkungan IPB. HPGW merupakan salah satu kawasan hutan di Jawa Barat yang hampir setiap tahunnya mengalami kebakaran. Penelitian ini bertujuan mengidentifikasi, mendeskripsikan, dan menganalisis faktor penyebab terjadinya kebakaran hutan, tingkat kerawanan kebakaran hutan di HPGW berdasarkan curah hujan, serta sistem pengendalian kebakaran hutan yang diterapkan di HPGW. Metode analisis data yang digunakan adalah deskriptif kualitatif dengan mendeskripsikan semua fakta yang diperoleh. Pembukaan lahan dengan membakar oleh masyarakat menjadi penyebab utama kebakaran hutan di HPGW. Hasil analisis curah hujan untuk menentukan tingkat kerawanan kawasan terhadap kebakaran menunjukkan tingkat kerawanan yang rendah dengan nilai 2805,5 mm/tahun. Bahan bakar potensial di kawasan ini antara lain, tegakan jenis pinus dan agatis serta serasah daun pinus. Sistem pengendalian kebakaran hutan di HPGW terdiri atas empat komponen yaitu pencegahan, pra pemadaman, pemadaman, dan penanganan pasca kebakaran hutan., Forest fires occur every year in Indonesia with different frequency, intensity, and area burned. Gunung Walat Educational Forest (HPGW) is included in the Special Purpose Forest Area (KHDTK) managed by the Faculty of Forestry and Environment, IPB. It is one of the forest areas in West Java that experiences forest fires almost every year. The purposes of this research are to identify, describe, and analyze the factors that cause forest fires, the potential for fuel, the level of forest fire vulnerability in the HPGW based on rainfall, and the forest fire control system implemented in the HPGW. Data analysis method is descriptive qualitative by describing all the facts obtained. Land clearing by burning by people is the main cause of forest fires in HPGW. The results of the rainfall analysis to determine the area's vulnerability to fire showed a low level of vulnerability with a value of 2805.5 mm/year. There ara two species that can be potential fuels in this area, namely pine and agatis species, and also pine leaf litter. The forest fire control system in HPGW consists of four components, namely prevention, pre-extinguishing, extinguishing, and post-forest fire management.
Keyword: Fire causes, fire control, Gunung Walat, Educational Forest, rainfall

Judul: Optimization of Alginate-Chitosan Microcapsules Formation for Leydig Cells Encapsulation
Abstrak: Hypogonadism is a clinical condition characterized by low concentrations of testosterone. It is caused by malfunction of Leydig cells in producing testosterone. Encapsulation method will protect the transplanted cells from the immune system rejection. The aims of this study was to optimize the formation of microcapsules for Leydig cells encapsulation. The microcapsules were made of alginate and chitosan as the first and the second coating agents, respectively. The result showed that the minimum concentration of alginate was 1.5% (w/v) with a viscosity of 33.8 cPs, resulted spherical microcapsules with diameters of 230-270 µm. The optimum concentration of chitosan as the second coating agent was 0.5% (w/v), resulted spherical microcapsule with mechanical stability in 4 hours. Leydig cells can be trapped inside the capsule with a density that proportional with concentration of cells used in the encapsulation.
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