Judul: Studi Pemanfaatan Citra IKONOS dalam Penyusunan Model Pengaturan Hasil Hutan di Kesatuan Pemangkuan Hutan Jatirogo Perum Perhutani Unit II Jawa Timur
Abstrak: Forest yield regulation had been a main activity that should be performed prior to forest management for preserving sustained yield. During establishment of yield regulation, there is a need to get a realistic (up-to-date) standing stock from the forest area being managed. Now, the forest area managed by Perum Perhutani are suffering from forest encroachment, illegal cutting, forest fire, forest conversion, etc. These may cause that the total standing stock decrease significantly. In this condition, if the allowable cut does not be corrected, then it could be overcutting. Nowadays, remote sensing technology can be one alternatif way to get accurate and complete information quickly. It can be used to provide a reliable standing stock information. IKONOS is one of natural resources satellite with high spatial resolution which is suitable for detailed and accurate application. Using this remote sensing technology, a correction of data derived from terrestrial inventory can be made providing better standing stock estimation. Finally, it can be used to revise forest yield regulation in Perhutani. The objectives of this study are to use IKONOS image for determining sum both the volume and acreages of allowable cut based on IKONOS image information. To support the study, the data used include IKONOS image that acquared in 2006, thematic digital data, forest inventaritation report, and data of Sustainable Forest Regulation Plan. The study was performed during Juny 2008 in Bancar Forest Division, Jatirogo Forest District Administration Perum Perhutani Unit II East Java. The hardware is personal computer and softwares are Erdas Imagine 9.1, Arc View 3.2, and Stella Research 8. Forest yield regulation model performed in this study consisted of three sub-models i.e (1) dynamic of standing extensive sub-model, (2) number of tree dynamic sub-model and (3) yield regulation sub-model. The study shows that allowable cut in 2006 are 4448 cubic and 49,18 hectare. Based on the information derived from IKONOS, the allowable cut for volume is 4390,28 cubic while the allowable for acreages is 43,06 hectare. The IKONOS based acreages are 6,12 hectare lesser than those obtained from static regulation, or approximately 57,72 cubic.
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Judul: Penyusunan Tabel Volume Jati  (Tectona Grandis, Linn.F)  Menggunakan Citra Satelit Resolusi Tinggi  Di Kph Jatirogo,  Perum Perhutani Unit Ii Jawa Timur
Abstrak: Perum Perhutani is one of the state companies that has a long history in managing forest area in the most populated island, Java. However, in line with the population and economical growths, the company is frequently facing problem on forest protection, particularly on wood stealing, forest encroachment, forest fire etc. Thus, the company needs to establish a tool that may support forest management through establishment of forest inventory. In the forest planning, forest inventory had been playing an important role. Forest inventory is usually performed to acquire data and information of the forest resources potency through three methods, that are terrestrial, remote sensing and combination of the mentioned two methods (e.g., two-phase or double sampling technique). Generally, double sampling technique employs remote sensing data obtained by air mapping or satellite imaging. Among these two image sources, satellite images had been more preferable since they have shorter temporal resolution, digital format, better spatial resolution and to some extent are cheaper. To facilitate forest survey, forest inventory usually uses aid tools such as tree volume table or stand volume table. In this research the author focused on the establishment of stand volume table of teak forest using high resolution satellite images. The model is then referred to as satellite volume table. The objective of this study is to establish stand volume of teak forest (Tectona grandis Linn.f) using Ikonos images in KPH Jatirogo Perum Perhutani Unit II, East Java. Ikonos data used were recorded on 9 October 2006. The softwares used were ArcView GIS 3.2, Erdas Imagine 9.1 and Minitab 14. For ground ground surveys, the equipments used were GPS, brunton compass, phi-band, haga hypsometer and digital camera. The study encompass following steps, i.e., images pre-processing, ground sampling and data analysis. The study results showthat the crown diameter means derived from Ikonos image (Dc) have high correlation with clear bole tree height for estimating (merchantable stand volume (Vbc), having correlation coefficient of 0,824. Based on statistical analysis, model evaluation, and model simplicity, the best model selected for predicting stand potency is Vbc = - 19,2 + 25,2 Dc, with coefficient of determination of 83,2%. Using the double sampling technique, the stand volume per unit area are approximately 136,331 m3/ha, having variance of the mean of 164,918 (m3/ha)2. At 95% of confidence level, the stand volumes are ranging from 109,979 m3/ha to 162,683 m3/ha with 19,33% of sampling error. The study also shows that there is a high consistency between the crown diameter measured from ground and Ikonos having coefficient of determination of 95,2%. Keywords: stand potency, double sampling technique, ikonos
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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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