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Analysis of Space Suitability Based on Marine Agriculture in The Small Islands Around Makassar
Get PDFThe purpose of research is to analyze the suitability of the waters and environmental carrying capacity for utilization of marine aquaculture. Analysis of the data using conformity matrix is based on the physical-chemical parameters of the waters. Analysis of environmental carrying capacity performed to estimate the number of units that can be supported on the cultivation potential areas. The analysis is done by desk study approach, surveys and direct measurements. The analysis showed: (a) the condition of the waters of small islands around Makassar suitable for utilization of aquaculture, and (b) The water potential for seaweed cultivation around 110,012.6 ha, and the effective area about 243.225 ha. Broad potential area for grouper aquaculture by floating net system is approximately 1961.3 ha, and an effective area approximately about 209.97 ha. The results of this analysis are expected to be useful as: (1) a material consideration in the formulation of investment policy and research, (2) a reference for the public and private sectors in developing of sustainable aquaculture system effort
Seluk Beluk Registrasi Penduduk dan Peranannya dalam Perencanaan Pembangunan Kependudukan
No full textRegistrasi penduduk merupakan sumber data kependudukan yang sangat penting untuk tujuan keamanan dan perencanaan pembangungan kependudukan. Data ini disamping mencakup wilayah yang luas (lingkup Nasional), juga menyajikan data yang selalu baru dan kontinue sehingga dapat memenuhi kebutuhan data pada suatu saat. Ketersediaan data dan informasi kependudukan yang akurat dan tepat waktu merupakan unsur mutlak dalam perencanaan pembangunan. Data penduduk dari sumber ini disamping dapat digunakan untuk mengevaluasi program-program pembangunan yang telah berjalan, juga dapat digunakan untuk analisis jangka panjang dan yang lebih penting untuk perencanaan pembangunan kependudukan. Namun demikian, hingga kini sumber data tersebut belum dapat dimanfaatkan secara optimal sebubungtm dengan kendala kualitas dan kekomplitannya. Pemerintah telah berupaya meningkatkan kualitas data registrasi agar dapat dimanfaatkan untuk kesejahteraan penduduk
Kualitas Air Tanah di Tiga Ibu Kota Kecamatan (Kutowinangun, Prembun dan Kutoarjo) dan Kaitannya dengan Sanitasi Lingkungan Sekitar
Get PDFAir tanah masih merupakan sumber air untuk keperluan sehari-hari bagi penduduk perkotaan, lebih-lebih kota kecil pada umumnya. Sumber daya air menunjukkan gejala penurunan kualitas yang disebabkan oleh dampak berbagai macam kegiatan yang menghasilkan limbah dan sistem sanitasi lingkungan yang kurang baik. Daerah-daerah perkotaan yang terletak di dataran alluvial pantai dapat merupakan daerah yang rawan terhadap pencemaran air tanah. Tiga ibu kota kecamatan, yaitu Kutowinangun dan Prembun, Kabupaten Kebumen dan Kutoarjo Kabupaten Purworejo yang terletak saling berdekatan diteliti untuk mengetahui kualitas air tanah yang merupakan sumber air domestik penduduknya dalam kaitannya dengan kondisi sanitasi lingkungan serta persepsi masyarakat terhadap pencemaran sumber air tersebut. Penelitian ini dilakukan dengan mengadakan pengamatan di lapangan wawancara dengan penduduk serta analisis laboratorium terhadap sampel air tanah yang diambil. Hasil analisis laboratorium menunjukkan gejala kualitas air di tiga kota tersebut sudah memperlihatkan gejala penurunan, walaupun belum sampai melampaui ambang batas baku mutu air Golongan B. Penurunan tersebut terlibat dengan tingginya kadar NO2, SO4, Cl, COD dan bakteri coli. Diperkirakan bahwa tingginya kadar zat tersebut terkait dengan masalah limbah yang dibuang, yang didukung oleh sanitasi lingkungan yang masih belum baik. Kadar NO2 dan NO3 cenderung lebih tinggi di daerah pusat kota yang merupakan pusat aktivitas penduduk, dibandingkan dengan daerah pinggir kota. Limbah dari aktivitas kegiatan penduduk di pusat-pusat pelayanan umum, termasuk juga dari sarana transportasi di jalan raya dapat merupakan sumber pencemar air tanah. Bakteri coli pada umumnya tinggi di ketiga kota yang diteliti, melebihi 2400 MPN/100ml. Angka COD yang tinggi teramati didalam air tanah Kutowinangun dan Prembun, lebih dari 25% sampel di kedua kota ini memiliki COD diatas 10 mg/l, sedangkan di Kutoarjo relatif lebih rendah. Hal yang mirip didapatkan pada BOD. Persepsi penduduk terhadap masalah lingkungan umumnya beragam, namun terlihat bahwa penduduk dengan pendidikan di bawah SLTP masih belum mengerti atau kurang memperhatikan hal-hal yang terkait dengan pencemaran lingkungan
Proses Sedimentasi Oleh Arus Turbid pada Formasi Halang, di Daerah Ciawigebang, Kabupaten Kuningan, Jawa Barat
Get PDFSedimentologi adalah cabang dari ilmu geologi yang khusus yang mempelajan batuan sedimen, sifat-sifat fisisnya, tempatnya dalam kerangka geologi, dan proses pembentukannya, terutama cara dan lingkungan pengendapannya. Salah satu dari mekanisme sedimentasi, adalah sedimentasi sistem arus turbid (arus pekat), yaitu material sedimen yang beronggok pada suatu lereng samudra, kemudian secara tiba-tiba terkena hentakan dan meluncur dengan kecepatan tinggi bercampur air berupa suatu aliran padat ("density current"). Pada mekanisme ini, partikel-partikel sedimen bergerak tanpa benturan/seretan air, tetapi "energi potensial" dirubah menjadi "energi kinetis". Pengendapan terjadi setelah energi kinetis habis, misalnya pada tempat yang datar atau pada lekukan-lekukan. Arus turbid ini terjadi di laut dan merupakan mekanisme penting dalam mentrasfer material sedimen dari daerah bathyal dan abisal ke daerah hadal. Formasi Halang, yang terdiri dari perselingan antara lapisan-lapisan batu pasir dan batu lempung, berumur Miosen Awal, Miosen Tengah, dan diketemukan di daerah Ciawigebang, Kabupaien Kuningan, Jawa Barat, merupakan salah satu contoh endapan hasil sedimentasi oleh arus turbid
Geospatial Assessment of Coseismic Landslides in Baturagung Area
Get PDFJava, the most densely populated island in Indonesia, is located on top of the most seismically active areas in Southeast Asia: the Sunda Megathrust. This area is frequently hit by strong earthquake. More than 3,300 M5earthquakesoccurred between 1973-2014. The wide range of mountainous areas and high intensity of rainfall, make several part of the island one of the most exposed regions for coseismic landslides such as Baturagung area, the Southeast mountainous area of Yogyakarta Province. An integrated method between RS and GIS was used to conduct the vulnerability assessment due to the lack of the site specific slope instability analysis and coseismic landslides data. The seismic zonation of Baturagung area was obtained based on the analysis of Kanai attenuation. The geologic information was extracted using remote sensing interpretation based on the 1:100,000 geologic map of Yogyakarta and geomorphologic map of Baturagung area as well. The coseismic landslide hazard assessment has been estimated using scoring analysis in the GIS platform proposed by Mora and Vahrson (1993) with several modification. The accomplished coseismic landslide hazard map shows medium hazard coverage in the eastern areas, in the upper slope of Baturagung area, which consists of Semilir Formation. The result provides a distinct description of coseismic landslides hazard distribution in Batuaragung area. However, it should only be the preliminary assessment of the site specific investigation especially on valuable area or asset.
Kondisi Air Tanah di Daerah Perkotaan: Problema Antara Kuantitas dan Kualitas Air
Get PDFDaerah perkotaan yang merupakan pusat berbagai kegiatan ekonomi, jasa dan industri mejadikan kota sebagai pusat konsentrasi penduduk. Dalam pelaksanaannya selalu membutuhkan air. Umumnya masih banyak yang menggunakan air tanah, karena mempunyai banyak kelebihan baik segi ekonomi maupun potensinya (kualitas dan kuantitas). Pada saat ini sudah terjadi kecenderungan penggunaan air tanah yang kurang rasional. Terjadi ketimpangan antara ketersediaan dan penggunaannya, di samping telah terjadi efek kurang baik bahkan terjadi gejala pencemaran air tanah yang segera perlu mendapat perhatian. Gejala dari penggunaan yang kurang rasional adalah penurunan permukaan tanah dan instrusi air laut pada daerah kota yang berada di pantai, sedangkan kondisi kualitas air pun tercemar baik dari sifat fisis, khemis maupun bakteriologis
Groundwater Quality Distribution in Development City between Surakarta-Kartasura (Ground Water Hidrologi System Contemplation in Bengawan Solo Recharge)
Get PDFThis research is conducted in Kartasura-Surakarta s area especially from an area that relatively does not grow (recharge area) to an area growing to became a city (discharge area). The area is phisiographically restricted by a groundwater contour (i.e. 200 m from sea level) and by three rivers (i.e. Pepe, Wiro, and Bengawan Solo). This research has one objective to know the distribution of groundwater quality in Kartasura-Surakarta that is located between Pepe river and Wiro river. This research uses survey model and description comparative model completed by cheking the field. On the one hand, survey model measures physical data and density population data, and on the other hand, description comparative model is used to know the influence of physical factors and density population factors on groundwater quality. Physical data and density population data collected by using purposive proportional random sampling are analyzed with trend analysis model, statistical analysis model (i.e. parsiil correlation and one-way variant analysis). The result of this research shows that the groundwater quality in the field declines. The trend analysis proves that most of the parameter concentrations of groundwater quality increase from the recharge area to the discharge area. Furthermore, the conclusion is also supported by the result of parsiil correlation analysis that shows a positive correlation between the distance and the most of the parameters, although the positive correlation between the depth of groundwater and the parameters of groundwater quality is weak. Moreover, the results of one-way variant analysis to the selected factors (i.e. geology formation, density groundwater contour, and density population) with the parameters of water quality show that there is a strong difference on the most of the parameters
Institutional Analysis of Watershed Manangement in Batam Island
Get PDFThis study aimed to look at the institutional condition of the current watershed management and institutional models (management authority) which were relevant to Batam Island in the future. The data collection was conducted by interview techniques and was validated through focus group discussions. The data were described and analyzed with SCP (structure, conduct, performance) method for relevant stakeholders’ data, legislation, and with KIPA (quadrant interpretative performance analysis) method for data of interest and power of stakeholders. The results showed that the watershed management institutional in Batam Island was still overlapping. According to the regulations, the Management Board (BP) of Batam Island was given the authority to manage and to use land and water; on the other hand the Local Government (Mayor) was facilitated by BPDAS KEPRI (Watershed Management Institute of Riau Islands) to also arrange an integrated watershed management. The results of discussions showed that BP Batam was an institute of having interest and power as well as key position in achieving successful watershed management. Based on this study, it was suggested that BP Batam should be given authority in watershed management in Batam Island, which keeps referring to the norms, standards, procedures, and indicators set by the central government
Arah Perkembangan Teknologi Sistem Informasi Geografi di Indonesia
Get PDFPada dekade mendatang, teknologi sistem informasi geografik terus berkembang dengan cepat. Perkembangan akan semakin nampak pada kecepatan, kapasitas penyimpanan dan sistem komputasi. Peranan sistem informasi yang berorientasi pada referensi di permukaan bumi atau spasial akan semakin dominan dalam pengambilan keputusan untuk perencanaan dan operasionalisasi pembangunan yang berkelanjutan dan berwawasan lingkungan. Banyak tantangan dan harapan yang perlu dihadapi dalam perkembangan informasi spasial yang diperlukan dalam pengambilan keputusan. Makalah ini mencoba mengulas beberapa harapan dan kendala atau tantangan dalam perkembangan sistem informasi geografik di Indonesia
Aplikasi Penginderan Jauh dan Sig Untuk Penetapan Tingkat Kemampuan Penggunaan Lahan (KPL) (Studi Kasus di DAS Nawagaon Maskara, Saharanpur-India)
No full textThe land that was increasingly crowded resulting from the inhabitants’s speeding-up pressure, required the utilisation of the land to be as efficient and as effectively as possible. For this matter must be known by the LUC (Land Use Capability) class respectively the unit of the land management, so as to be known as early as possible the obstacle factor from the land and could be done by the utilisation of the land as optimally as possible. The implementation of the LUC determination must be carried out a stage for the sake of a stage by counting LUC respectively the main factor, so as to be received by LUC-Soil, LUC-Erosion, and LUC-Slope. The next one of the three of this LUC were just counted by the value of the maximum to appoint LUC Final. LUC-Slope by being based on the Wischmeier and Smith (1978), LUC-Erosion was counted by using the quantitative MMF erosion formula (Morgan, Morgan, and Finney), and LUC-Soil by gathering the physical data the field took the form of the texture data of the land, drainage, solum and the percentage of the rock in the surface. LUC-Erosion and LUC-Soil were received by 5 LUC classes (I, II, III, IV, IV, and VI), whereas LUC-Slope was received by 7 LUC classes all of them except the V. LUC I class until IV were recommended for the agricultural crop and LUC V until VIII for the forestry crop. From 11 of Sub Watershed LUC VIII was expanded 107.54 ha to Sub Watershed Sarbar Rao and narrowest to Sub Watershed Maskara Rao (0.12 ha). On the other hand for LUC II was expanded to Sub Watershed Nawagaon Rao (1136.8 ha) and narrowest (1.51 ha) to Sub Watershed Shakumbari Rao. The location of the research in Sub Watershed Nawagaon Rao Mascara the Saharanpur city, India, with the location goegrafis from 30 o 09’ 00" N - 30o 21’ 00" N and longitude 77 o 34’ 00" E - 77 o 51’ 00" E, widely the Watershed whole 205.94 km2 or 20594.49 ha. The analysis of the image satelit with IRS (Indian Remote Sensing) LISS IV in January 2005, the analysis of three dimensions with DEM SRTM, and the map of the topography of the sheet 53 F/11, 53 F/12, 53 F/15 and 53 F/16. The aim of the research of determining the LUC class by counting each one of LUC-Soil, LUC-Erosion, and LUC-Slope. The use of the land in the Nawagaon Maskara Rao Watershed in part: Wheat super (969,26), normal Wheat (2753.7 ha), the Orchard (2103.2 ha), the Forest was rather close (3930.5 ha), the Forest was open (3352.1 ha), Scrub (168.62 ha), Brush rocky (658.56 ha), and Open land (1814.8 ha). Was based on results of this research recomendation for LUC VIII was only for the protected forest that might not be touched or produced