Judul: Model Dinamika Karbon TPTI dan TPTJ di IUPHHK-HA PT Sari Bumi Kusuma Kalimantan Tengah
Abstrak: The main issue of climate change was discussed by forestry companies, which caused by the increasing of green house gas emissions in the atmosphere. The carbon storage dynamics in PT. Sari Bumi Kusuma was calculated to determine the amount of carbon dioxide from the atmosphere that absorbed by the forest. The aim of this research is to create a model of carbon storage dynamics in PT. Sari Bumi Kusuma. Model development method that used in this study is the systems approach. This system approach can explain carbon storage dynamics of TPTI and TPTJ system with SILIN techniques. TPTI carbon storage is 115.49 ton/ha and TPTJ SILIN techniques carbon storage is 251.36 ton/ha. The current carbon storage potential amount in PT. Sari Bumi Kusuma is 26,493,223.51 ton of carbon. The best scenario that can increase carbon storage in PT. Sari Bumi Kusuma is by applying the TPTJ sylviculture systems with SILIN techniques. Implementation of this scenario can increase the carbon storage up to 30,064,528.63 ton of carbon.
Keyword: PT. Sari Bumi Kusuma, carbon storage, climate change

Judul: Model Dinamika Tegakan dan Stok Karbon Hutan Alam di PT Carus Indonesia Kalimantan Tengah
Abstrak: Isu pengurangan emisi karbon pada penebangan telah menjadi isu utama dalam beberapa tahun terakhir ini di seluruh dunia, tidak terkecuali di Indonesia. Kegiatan pengelolaan hutan yang tidak tepat menyebabkan menurunnya kualitas hutan dan dapat menurunkan simpanan karbon yang ada pada hutan. Tujuan penelitian ini adalah untuk mengetahui perubahan-perubahan stok karbon yang terjadi akibat kegiatan pemanenan hutan dan mengetahui apakah simpanan karbon hutan alam bekas tebangan dapat kembali seperti simpanan karbon pada hutan primer, sehingga penelitian ini juga mendukung konsep tujuan pembangunan berkelanjutan (SDGs) yang merupakan konsep baru untuk periode 2015 sampai 2030. Berdasarkan hasil pemodelan dinamika sistem bahwa simpanan karbon hutan alam PT Carus Indonesia dapat meningkatkan simpanan karbon hingga mencapai seperti besar simpanan karbon pada hutan primer pada siklus kedua dalam kurun waktu 18 sampai 19 tahun, tetapi jika diterapkan sistem TPTII, simpanan karbon akan meningkat lebih cepat dan dapat mencapai seperti besar simpanan karbon hutan primer dalam kurun waktu 11 tahun setelah penebangan pada siklus kedua. Kemampuan tegakan tinggal dan stok karbon yang dapat kembali ke kondisi semula menjadi indikasi bahwa pengelolaan hutan di PT Carus Indonesia dapat berjalan secara lestari. Kata kunci: Stok karbon, hutan bekas tebangan, hutan primer
Keyword: Carbon stock, Logged forest, Primary forest, Simpanan karbon, Emisi karbon, Pengelolaan hutan, SPGS, Penebangan, Forestry

Judul: Pengujian Virus Newcastle Disease Gen VII Isolat Lapang Sebagai Virus Standar Pada Uji Tantang Vaksin
Abstrak: This study was conducted to determine the standard of Newcastle disease virus Gene VII field isolate as a virus challenge to vaccine test. A virus suspension that has previously been tested by HA test then titrated with EID50 using 30 Specific Pathogen Free (SPF) of 10 day old chicken embryonated eggs. In addition, chicken lethal dose50 (CLD50) test were used to determine the virus titer that could cause 50% death of the chicken population. The CLD50 test was used 25 day-old-chickens (DOC) divided into 5 groups. The virus was diluted from 10-1 to 10-8. The 104 to 10-8 dilution of NDV was infected to every group of chicken via eyedrop and intranasal with 0.1 ml/chicken dosage. Haemagglutination test showed that the allantoic fluid were contain high titers of NDV is 512 HAU. The infective NDV that had been titrated by EID50 test showed the virus titers is 109 EID50/0.1 ml or 1010 EID50/ml and the virus titers of CLD50 test e.i 106.48 CLD50/0.1 ml or 107.48 CLD50/ml. These results can be concluded that the NDV Gene VII field isolates were most appropriate to be used as a standard virus to vaccine test
Keyword: Newcastle Disease Virus Gene VII, HA tes, EID50 test, CLD50 test