Judul: Penentuan Luas Hutan Kota  Berdasarkan Penyerapan Karbondioksida (Co2)  Di Pasir Pengaraian Kabupaten Rokan Hulu Propinsi Riau
Abstrak: Town is the center of people activity and concentration place of resident experiencing of growth from time to time. Growth of town is marked at the height of development new settlement, office centre, shopping centre, industrial, the motor vehicle increase, and increase total populasi of resident . Pasir Pengaraian is the capital regency of Rokan Hulu which is expanding causing the happening of change in various area. Density in Pasir Pengaraian in the year 2005 is 0,79/m2 while in the year 2007 is 0,9/m2. Growth of this Development bring negative impact to environmental quality. This matter can be marked with more and more it’s pop out environmental problem in urban like as improvement of temperature and mount pollution of air marked progressively is abundant produce of carbon dioxyde ( CO2) and decrease produse oxygen (O2) on the air. Applying conception urban forest in planning of urban arrangement will overcome problem degradation of environmental quality. According To Governmental Regulation No 63 Year 2002, urban forest is a carpet of farm which spring up compact tree and close in region of good urban at goverment land and also groundland of rights specified by official functionary as urban forest. Intention of this research is to determine wide of urban forest to be develop builded in Pasir Pengaraian in 2008 and estimation of the wide urban forest until 2020. The obtained data in the form of resident amount, sum up consumption of BBM (gasoline, diesel fuel and kerosene) and LPG processed with the capability carbon dioxide sinks by plant so that obtained a wide of urban forest to absorbtion carbon dioxyde. Wide of urban forest to be develop builded in Pasir Pengaraian of pursuant to Governmental Regulation of No 63 Year 2002 is 10 % from wide of town of Pasir Pengaraian ( 39.665 Ha) is 3.967 Ha, while wide of urban forest to be develop builded pursuant to absorbtion of carbon dioxyde of year 2008 is 3.095,99 Ha or 7,81 % from wide of town and in the year 2020 is 8.059,99 Ha or 20,32 % from wide of town of Pasir Pengaraian.
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Judul: Analisis Distribusi dan Kecukupan Luasan Hutan Kota sebagai Rosot Karbondioksida dengan Aplikasi Sistem Informasi Geografi dan Penginderaan Jauh di Kota Pematangsiantar, Sumatera Utara
Abstrak: Pematangsiantar city as central of government has been facing dynamical change in many aspects such as technological, economical, social-cultural and demographical. The condition lead to open space conversion into industrial area, settlements, offices and other economic activities and increase vehicle numbers. The land conversion and high number of vehicle have increased carbon dioxide (CO2) emission. It is predicted that the pollution may decrease the quality of life environment in Pematangsiantar. One of the effective and efficient solutions to overcome this impact is to implement concept of urban forest in land-use plan. The aim of this study is to estimate the emission of CO2 and analyze the distribution and sufficiency of urban forest in Pematangsiantar during 2009. Hopefully, the result of this study can give information and input to the Local Government of Pematangsiantar and give alternative of solution in the urban forest development. It also gives an overview about the distribution of urban forest an each subdistrict in Pematangsiantar. This study was conducted in Pematangsiantar, the province of North Sumatera during July to September 2009. The data that collected consisted of the consumption level of fuel (oil and gas), total and kind of cattle, width of rice field area and types of land cover of Pematangsiantar. The result shows the emission of CO2 from energy is 261,285 Gg CO2/year, emission from cattle is 0,301 Gg CO2/year and emission from farm is 1,144 Gg CO2/year. The total of emission is 262,73 Gg CO2/year. Based on the landsat image and field condition , Pematangsiantar can be classified into 8 types of land cover. The area of urban forest (high vegetation) numbers is 1.161,45 ha (14,49%), built area is 2.384,64 ha (29,75%), farming area (rice field, dry farm, plantation, bushes, grass land) is 3.412,53 ha (42,57%) and area for infrastructure building 1.057,68 ha (13,16%). The need of urban forest area in Pematangsiantar can be estimated through CO2 absorption approach. Based on CO2 emission calculation, Pematangsiantar city needs 4.509,8 ha (56,26%) for urban forest while the available urban forest in Pematangsiantar is only 1.161,45 ha. Due to emission of CO2 in Pematangsiantar, the city needs more area for urban forest of about 3.345 ha more.
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Judul: Embriogenesis ikan buta (Astyanax fasciatus)
Abstrak: Ikan buta Astyanax fasciatus adalah spesies ikan unik dari famili Characidae yang menempati perairan dalam gua di Wilayah La Cueva Chica-San Luis Potasi-Mexico. Ikan ini memiliki mata yang tereduksi (Blind Cavefish) dan warna kulit merah muda, pucat serta mengkilap.
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