Judul: Kualitas tanah pada sistem silvikultur tebang pilih tanam jalur(TPTJ) di areal kerja IUPHHK/HA PT. Sari Bumi Kusuma provinsi Kalimantan Tengah
Abstrak: Rapid forest exploitations can cause forest degradation, and eventually may cause the global climate change, because of that, the balance of the forest sustainability must be kept as well. The implementation of silviculture system called Selective Cutting and Strip Planting System is one of several forest harvesting method that consider the importance of forest sustainability. Practically, the system has never been tested to the last cycle. So, it is necessary to conduct some evaluation to the method to assure its sustainability. Estimation of soil quality is one of several ways to evaluate the effectiveness of silviculture implementation on a forest area, Since the soil is one of the major factor that influencing the growth of vegetations, then its quality can be used as an indication of conservation of forest productivity. In this research, the soil sampling was done in the forest area of PT. Sari Bumi Kusuma, on class of 1-9 years cultivation age, on May 22-31 2009. The sampling method being used is purposive sampling on the plot with size of 100 m x 100 m, selected purposively based on the same physical characteristic, in each class age on the intermediate block and planting strip to the depth of 0-20 cm and 20-40 cm. The sample is then analyzed with statistic method called ANOVA, to compare the mean value, and then the research data was scored based on Pamoengkas (2006). The result from scoring was then substituted into the formula developed by Pamoengkas (2006), and finally grouped into several categories developed by Pamoengkas (2006). The result of this research is the founding of two categories of soil quality value in the forest area of PT Sari Bumi Kusuma. One is Medium Category (1, 2, 4, 5, 8, and 9 years of cultivation age), and the other is Low Category (3, 6, and 7 years of cultivation age). Those differences might be due to unpredictable factors which have created non-uniform environment conditions of the research area, and those environment conditions have influenced the development of parameters which affecting the soil quality.
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Judul: Kajian Aspek Vegetasi dan Kualitas Tanah Sistem Silvikultur Tebang Pilih Tanam Jalur (Studi Kasus di Areal HPH PT. Sari Bumi Kusuma, Kalimantan Tengah)
Abstrak: Sistem silvikultur Tebang Pilih Tanam Jalur (TPTJ) sebagai salah satu contoh selective system atau selective logging merupakan sistem pengelolaan hutan alam produksi yang kini menjadi salah satu alternatif yang patut dipertimbangkan untuk memperbaiki kualitas hutan alam yang rusak melalui penanaman dengan sistem jalur. Dalam sistem ini batas diameter tebang diturunkan menjadi 40 cm sehingga produksi kayu per ha menjadi lebih besar. Namun, disisi lain sebagai akibat dari penurunan tersebut terjadi perubahan pada komposisi dan struktur vegetasi serta iklim mikro yang lebih luas sehingga menimbulkan kekhawatiran akan terjadinya perubahan kualitas tanah yang cukup besar pada areal penebangan tersebut. Untuk itu maka kajian tentang perubahan ekosistem merupakan studi yang sangat penting dalam praktek system TPTJ yang selama ini belum banyak dibahas.
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Judul: Trichomonas Gallinae Penyebab Trichomonosis Pada Unggas
Abstrak: Trichomonas gallinae adalah protozoa yang bergerak aktof dengan keempat flagella yang mempunyai layar dan pada salah satu sisinya terdapat membran seperti sirip ikan yang berombak. Spesies dari genus Trichomonas ini mempunyai arti penting pada unggas, karena dapat menyebabkan infeksi pada alat pencernaan bagian atas.
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