Judul: Prediksi Aliran Permukaan pada DAS Mikro Bungku dan DAS Batang Tabir, Provinsi Jambi Menggunakan Model SCS-CN.
Abstrak: The interaction between human and biophysical condition, which include making changes and regulating landuse in order to fulfil their needs can nevertheless destruct the hydrological function of watershed. A Good hydrological function achieved if there is an equilibrium water system to prevent the water shortages in the dry season or water excess in the rainy season. The analysis of the water system is required to determine the impact of the landuse changes. Therefore, it is necessary to conduct a simulation process that makes the water system in a watershed can be learned in a more simple way. The simulation and simplification process is developed in various models. The use of the model certainly has its own limitations and advantages due to the data availability. One of the models used to predict the overland flow in a watershed is a Soil Conservation Service model - Curve Number (SCS-CN). This is a rainfall-runoff model developed by United States Department of Agriculture (USDA), using rainfall data, soil texture, vegetation, initial abstraction as the input and overland flow as the output. Thus, this research aims at: (1) Assessing the biophysical and hydrological characteristics of land in Bungku micro watershed and Batang Tabir watershed, and 2) Predicting the overland Low data by using the Soil Conservation Service - Curve Number (SCS-CN). The study was conducted in two different watershed areas, namely in Bungku micro watershed with 14.02 hectare square, located in Bungku the Village, Bajubang sub District, Batanghari district, and in Batang Tabir watershed with an area of 107 442.86 hectares square located in Merangin, Bungo and Kerinci district. Data collection was conducted from January 2013 as the primary gathered in Bungku micro watershed November 2013 - January 2014, while in Batang Tabir watershed was held in February - March 2014. The result of this research showed that Bungku micro watershed has a hilly and valley terrain conditions characterized by the dominant slope which is a steep slope with a landcover an area consisting of 1.16 hectare square forest and oil palm plantations with a different undercover vegetation, such as coarse grass (2.09 hectare square), shrubs (7.12 hectare square), and bare land (3.65 hectare square). The Distribution of soil texture in this location is quite varied with clay loam (46%) as dominant texture, followed by loam (24%), and clay (21%). Based on the type of soil texture and infiltration that occurs in this area, the dominant hydrologic soil group (HSG) in Bungku micro watershed is group D with the average value of Antecedant Moisture Condition (AMC) which is in the condition I during field observation and having CN varies between grades 73-88. The highest daily rainfall is 64.34 mm while the lowest si 1.95 mm. The result of the highest prediction overland flow of the model is on December 6th, 2013 in 43.11 mm by 58.49 mm rainfall while the lowest is on December 5th, 2013, as high as 0.12 mm with 4.55 mm rainfall. Batang Tabir watershed exhibits various type of landuse compared with Bungku micro watershed, ie forest (67.81%), Mixed Garden (5.16%), oil palm plantation
Keyword: landuse, SCS-CN model, overland flow

Judul: Analysis of Surface Runoff in Citarum Watershed
Abstrak: Beberapa DAS di Indonesia telah mengalami kerusakan, salah satunya adalah DAS Citarum. Kerusakan yang terjadi pada DAS menunjukkan masih lemahnya sistem pengelolaan yang ada. Sistem pengelolaan DAS yang lemah terjadi karena kurang terdeteksinya kerusakan DAS secara dini dan periodik. Kerusakan DAS dapat diidentifikasi menggunakan pemodelan hidrologi, antara lain dengan analisis aliran permukaan (surface run off) menggunakan metode Soil Conservation Service berbasis curve number (SCS-CN). Penelitian ini bertujuan untuk menentukan dan memetakan nilai CN dan aliran permukaan di DAS Citarum. Nilai aliran permukaan diprediksi dengan model SCS berdasarkan nilai CN setiap unit lahan. Data yang digunakan pada penelitian ini yaitu data tekstur tanah, curah hujan dan jenis tutupan lahan untuk menentukan nilai CN. Nilai CN diolah untuk menentukan nilai aliran permukaan. Nilai CN yang tinggi berpotensi menghasilkan aliran permukaan yang tinggi. Selanjutnya, nilai aliran permukaan dipetakan pada seluruh wilayah DAS Citarum. Hasil penelitian menunjukkan nilai CN tertinggi terdapat pada satuan lahan terbangun dan terendah terdapat pada satuan lahan bervegetasi. Nilai aliran permukaan tertinggi terdapat pada subDAS Cigundul sebesar 731 mm/tahun dan terendah di subDAS Citarum Hulu sebesar 356,22 mm/tahun. Curah hujan yang menjadi aliran permukaan tertinggi sebesar 34% terjadi di subDAS Citarum Hilir dan terendah sebesar 20% terjadi di subDAS Citarum Hulu., Several watersheds in Indonesia have been degraded, one of which is the Citarum watershed. The degradation of the watershed indicates that the existing management system is still weak. Poor watershed management system occurs due to lack of early and regular detection of watersheds degradation. Watershed degradation can be identified using hydrological modeling, including the analysis of surface runoff using the curve number-based on Soil Conservation Service (SCS-CN) method. This study aims to determine and mapping the value of CN and surface runoff in the Citarum watershed. The surface runoff value was predicted using the SCS model based on the CN value of each land unit. The data used in this study are data on soil texture, rainfall, and land cover types to determine the CN value. The CN value is processed to determine the surface runoff value. High CN values have the potential to produce high surface runoff. Furthermore, the surface runoff value was mapped over the entire Citarum watershed area. The results show that the highest CN value is found in the built- up area and the lowest is in the vegetated area. The highest surface runoff value are found in the Cigundul sub-watershed at 731 mm/year while the lowest in the Citarum Hulu sub-watershed at 356.22 mm/year. The highest percentage of rainfall that became surface runoff was occured in the Citarum Hilir sub- watershed (34%) and the lowest is in the Citarum Hulu sub-watershed (20%).
Keyword: curve number, runoff mapping, SCS-CN

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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