Judul: PENUTUPAN LAHAN DAN ESTIMASI STOK KARBON PADA KAWASAN KESATUAN HIDROLOGI GAMBUT, PROVINSI JAMBI
Abstrak: Peatland is one of the land covers on the earth's surface that can provide environmental services, one of which is as a carbon reservoir. To provide anaccurate peatland carbon stock assessment, rapid and appropriate monitoring of carbon stocks on peat surfaces is required. This research aims to understand land cover and its changes and the resulting carbon reserves at each land cover change from 2000 to 2022. This study was conducted in Peat Hydrological Unity Area (KHG) in East Jabung District, Jambi Province, using a cloud computing-based remote sensing approach using Landsat 5, 8, and 9 image data options. Land cover classification, is done by using Support Vector Machine (SVM) algorithm via the Google Earth Engine (GEE) platform with 11 Landsat imagery indices. The results showed that the SVM algorithm performed well with an Overall Accuracy (OA)value of 92,5 and Kappa value of 88,94. During 2000-2022, the most significant land changes occurred in peat swamp forests, where it were converted to plantations, covering 28.97% of total KHG area. In 2022, the largest carbon reserves is foundreached 18,589,554.77 tons.
Keyword: carbon, land cover classification, peat

Judul: Estimation of Carbon Stock in Various Types of Land Cover with a Spatial Modelling of Field Measurement Data and Remote Sensing (a case study at Puncak and Cianjur areas, West Java)
Abstrak: Remote sensing technology is one of the effective ways to monitor land cover changes from time to time. The integration of field data and spatial data of land use changes from 1989 to 2007 will be a reference to find out the change of carbon stock in a certain land cover and land use. This research is to know the change of land cover during the periode of 1989-2007 and to analyze its relationship to the carbon stock changes. In this study, the method was divided into 4 stages: preparation and data collection, analysis of digital image, analysis of land cover/use, and estimation of carbon stock. The analysis result of Landsat image in 1989 and 2007 showed that there was a decline in the area of forest, rice field, and bare land up to 654 ha ( 4.92%), 594 ha (4.47%) and 95 ha (0.72%) respectively during the period of 1989- 2007. On the contrary, there was an increase in settlement areas, mix crops, crops, tea plantation and bushes by 954 ha (7.18%), 170 ha (1.28%), 145 ha (1.09%), 44 ha (0.33%) and 28 ha (0.22%). Estimation of carbon stock included biomass carbon and soil organic carbon stock. The total biomass carbon stock in forest areas and mix plantation decreased by 0.20 Mt from 1.76 Mt in 1989 to 1.56 Mt in 2007. The soil organic carbon stock in the depth of 0-30 cm decreased by 271.33 tens/ ha, and in the depth of 30-60 cm decreased by 122.89 tons/ ha, while the total soil organic carbon stock decreased by 0.51 Mt in the depth of 0-30 cm and 0.20 Mt in the depth of 30 – 60 cm., Teknologi penginderaan jauh merupakan salah satu cara yang efektif dalam melakukan pemantauan perubahan lahan dari waktu ke waktu. Integrasi data lapang dan data spasial perubahan penggunaan lahan dari tahun 1989 sampai tahun 2007 akan memberikan referensi untuk mengetahui seberapa besar perubahan karbon tersimpan pada suatu penutupan/penggunaan lahan. Tujuan dari penelitian ini adalah untuk mengetahui perubahan penutupan/penggunaan lahan tahun 1989 sampai 2007 dan hubungannya dengan perubahan karbon tersimpan Pada penelitian ini, metode penelitian dibagi menjadi 4 tahapan yaitu tahap persiapan dan pengumpulan data, tahap analisis citra digital, tahap analisis perubahan penutupan/penggunaan lahan dan pendugaan karbon tersimpan. Hasil analisis citra Landsat tahun 1989 dan 2007 menunjukan telah terjadi pengurangan luas hutan, sawah dan tanah terbuka sebesar 654 ha ( 4,92 %), 594 ha (4,47 %) dan 95 ha (0,72%) selama periode tahun 1989 sampai 2007. Sebaliknya pemukiman, kebun campuran, tegalan, kebun teh dan semak mengalami peningkatan area sebesar 954 ha (7,18 %), 170 ha (1,28%), 145 ha (1,09 %), 44 ha (0,33 %) dan 28 ha (0,22 %). Pendugaan karbon tersimpan meliputi karbon biomassa dan karbon organik tanah. Karbon biomassa tersimpan dalam kawasan hutan dan kebun campuran, mengalami penurunan sebesar 0,200 Mt dari 1,76 Mt pada tahun 1989 menjadi 1,56 Mt pada tahun 2007. Karbon organik pada kedalaman 0-30 cm telah terjadi pengurangan sebesar 271,33 ton/ha, dan pada kedalaman 30-60 cm terjadi penurunan sebesar 122,89 ton/ha, sedangkan total karbon organik tersimpan kawasannya mengalami penurunan sebesar
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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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