eJournal Universitas Nusa Bangsa
Not a member yet
534 research outputs found
Sort by
POTENSI DAN KOMPOSISI VEGETASI PADA EKOSISTEM HUTAN MANGROVE DI SELAT NASIK KABUPATEN BELITUNG, PROVINSI KEPULAUAN BANGKA BELITUNG (Studi Kasus di Desa Selat Nasik, Kabupaten Belitung, Provinsi Kepulauan Bangka Belitung)
Get PDFResearch on Composition and Potential Vegetation in Mangrove Forest Ecosystem has been done in Nasik Strait Belitung, Bangka Belitung Islands Province. In the month of May-July 2013, which includes the location of the research, namely in the village of Nasik Strait (Cape Nyato), Belitung regency. This study was conducted to determine the potency and composition comprising Relative Frequency, Relative density, relative dominance and importance value index any type of Mangrove Plant. Mangrove ecosystem measurements using line transect plot 20 m x 20 m.Identification results obtained by 10 mangrove plant species consisting of 8 true mangrove species (true mangrove) and 2 types of mangrove along (associate mangrove). The results showed that Bruguiera gymnorrhiza has the highest importance value index in the Village Location Nasik Strait (114.46), while the type of Xylocarpus granatum has the lowest critical value (5:57). Water temperatures ranging from 290C and the location of the substrate are sand, silt and clay. Dominant mangrove species composition of mangrove forest ecosystems in the dominance of the five species of mangrove Rhizophora apiculata, Rhizophora mucronata, Brugueira gymnorrhiza, Sonnerata alba and Xylocarpus granatum
SIMPANAN UNSUR HARA MAKRO (N, P, K, Ca dan Mg) PADA TEGAKAN SENGON (Paraserianthes falcataria (L.)) UMUR 5 TAHUN
Get PDFSengon (Paraserianthes falcataria) merupakan jenis tanaman yang dikembangkan sebagai tanaman hutan industri maupun hutan rakyat yang dimanfaatkan sebagai bahan baku kayu. Kandungan unsur hara yang terkandung dalam tegakan pohon sengon sangat penting untuk di ketahui.  Penelitian ini bertujuan mengetahui jumlah simpanan unsur hara makro  pada tanaman sengon yang berumur  5. Metode penelitian dengan   mengukur  volume total batang pohon, menghitung persediaan unsur hara sesuai formula yang ditetapkan, luas Bidang Dasar dan volume Batang Pohon. Hasil penelitian menunjukkan volume rata-rata pohon sengon di Desa Cidadap sebesar 412,48 m3/ha dan di Desa Pelabuhan Ratu sebesar 453,61 m3/ha. Kandungan hara makro yang tersimpan pada tegakan sengon adalah unsur kalsium (Ca) yaitu sebesar 0,28 %; kemudian Nitrogen (N) sebesar 0,23 %, Kalium (K) sebesar 0,19 %; Fosfor (P) sebesar 0,08 % dan Magnesium (Mg) yaitu sekitar 145,52 ppm. Simpanan rata-rata unsur hara makro (N, P, K, Ca dan Mg) tegakan Sengon di Desa Cidadap dari hasil penelitian adalah Kalsium (Ca) sebesar 380,22 kg/Ha ; Nitrogen (N) sebesar 311,22 kg/Ha; Kalium sebesar 264,97 Kg/Ha; Fosfat (P) sebesar 109,80 kg/Ha dan Magnesium sebesar 19,81 kg/Ha, sedangkan di Desa Pelabuhan Ratu adalah sebesar 418,14 kg/Ha Kalsium (Ca); 342,29 kg/Ha nitrogen (N); 291,40 kg/Ha Kalium (K); 120,75 kg/Ha Fosfor (P); dan  21,78 kg/Ha Magnesium (Mg).  Semakin besar volume tegakan Sengon, semakin besar pula simpanan unsur hara makro (N, P, K, Ca dan Mg)
DESAIN PENANGKARAN CENDRAWASIH KECIL (Paradisaea minor Shaw, 1809)
Get PDFPopulasi cendrawasih di alam menunjukkan penurunan dari tahun ke tahun. Terancamnya populasi cendrawasih kecil di alam menyebabkan perlu adanya upaya konservasi ex-situ, agar populasi di alam tetap terjaga. Tujuan dari penelitian ini adalah untuk mendeksripsikan desain penangkaran cendrawasih kecil serta menganalisis biaya ekonominya. Penelitian dilaksanakan pada bulan Maret sampai dengan Mei 2016. Berdasarkan hasil analisis ekonomi diperlukan biaya tetap atau modal untuk melakukan pembangunan penangkaran cendrawasih kecil sebesar Rp 132.400.000 dan biaya variabel dalam satu tahun Rp 48.180.000 untuk satu ekor cendrawasih kecil
PEMANENAN KAYU EKO-EFISIEN DI HUTAN ALAM MENDUKUNG KETAHANAN PEMBANGUNAN NASIONAL BERKELANJUTAN
Get PDFCurrent management of natural forests or crops are facing a lot of problems. Among the big issues are issues of law and policy sentralistis, which is less supportive, practice the utilization that are not concerned with sustainability and the environment, a proliferation of Wild wood processing industry, logging, looting the land, forest fires, floods and landslides, drought, destruction of the wealth and diversity (biodiversity), as well as many other social problems again. It all became a part of the integral to be a consideration in an attempt to rebuild the forest and forestry. In this reform era, Manager of natural resources forest (SDH) should change the paradigm, which is based with the appropriate forest, environmental understanding is a comprehensive, long-term and eco-efficient. In an effort to achieve the goal in question, it is very necessary that harvesting methods and strategies of eco-efficient and appropriate, so that the results can be obtained in addition to wood, can be built to the maximum return of damaged forests, also exploiting the existing potential can still be managed effectively and efficiently, among others achieved by implementing eco-efficient (productive and minimum impacts ")
BEBERAPA ASPEK PENTING DALAM PENILAIAN PENGELOLAAN PASCA PEMANENAN DI HUTAN TANAMAN
Get PDFBiomass of timber post forest harvest (natural forest or made man forest0 that available at the felling site is one of natural sources which have a volume still potentially. These materials can be use for energy sources or fulfil of additional materials for pulp and paper industries or another product as availability of volume, type and seize of biomass which usually called as wastes. This potency can be obtained from plantation forest and or natural forest especially on conversion forest production in the form of wastes of bucking, trimming, main stem, branch and stump. The problem is how to collect it in an effective and efficient way. The availability of wood wastes among other due to other function has high condition, particularly for plywood and timber construction as well. For example the length of wood to short, to small of diameter, many defect, decay and holes or bending. Other form are stump and roots, branches and to many bandings. Mostly all of wood wastes are used for layer when equipment wills passing that rows. Similar thing can also obtain from limb trees hit by tree which is cut, hit on skidding operation and road construction.Â
DAMPAK PERALIHAN FUNGSI KAWASAN HUTAN TERHADAP KONDISI SOSIAL EKONOMI MASYARAKAT (Studi Kasus: Kampung Lembur Pasir, Desa Ginanjar, Kecamatan Ciambar, Kabupaten Sukabumi, Jawa Barat)
Get PDFChange region switch the function of limited production forest area of the reserve has implications for the shape of people's activities in the region are limited. This study aims to determine the impact of the transition Perhutani office production forests into conservation forest area of the National Park on the socioeconomic conditions of rural communities around the area hutan. Metode research is a case study where data collection is done by using questionnaires and in-depth interviews and analysis of descriptive data. The results showed the impact of transfer of forest land to the socio-economic conditions of rural communities around the forest area, the social aspects of a decline in the number of pengarap land and increasing types of livelihood (of 6 types to 13 types of livelihood) and from the economic aspect, noticeable decrease in the use of firewood by the head of each family as well as a decline in revenue on each head of family who make their livelihood as this penggarap. Implications for the various issues that arise in the community where it takes an intensive development program
METODE ALTERNATIF ANALISIS SULFUR DALAM SOLAR DENGAN ALAT ICP-OES OPTIMA 5300 PERKIN ELMER
Get PDFAlternative Method for Sulphur Analyse in Diesel Fuel Using ICP-OES Device.        Advancement of atomic emission spectroscopy with come together source of new excitation created analysis technic as Inductively Coupled Plasma (ICP). Its analysis technic is constitute the simultaneous analysis technic by mean of higher accurate and sensitivity level. Whereas predominance of this technic therefore necessary conducted research for determination amount of sulfur in diesel fuel by ICP’s tchnic in order that can used to alternative method. Modify of Inductively Coupled Plasma Optical Emission Spectrometry (ICP – OES) Perkin Elmer Optima 5300 had done to get reliable and acceptable result. Conclusion of result of the research from this alternative method that the best optimum wavelength used for this technic was 180.669 nm with accuration = 100.7 %, precission 0.78 %, linearity = 0.99968588, LoD = 0.00112, LoQ = 0.0316. Sample analysis result of diesel fuel using wave length (λ) 180.669 nm gave very good validation value, where  % CV less of 2/3 % Horwitz. The recovery result of the sample got  very good value, that was 99.1233 %, This showed that ICP – OES 5300 Perkin Elmer device could be used as alternative method for sulphur content analysis in diesel fuel.Keywords : Sulphur, ICP – OES, validation Abstrak       Kemajuan pada spektroskopi emisi atom dengan ditemukannya sumber eksitasi baru melahirkan teknik analisis secara Inductively Coupled Plasma (ICP). Analisis dengan teknik ini merupakan analisis secara simultan dengan tingkat ketelitian dan sensitifitas yang tinggi.Mengingat keunggulan teknik analisis ini perlu diadakan penelitian penentuan kandungan sulfur dalam solar dengan teknik ini, agar dapat digunakan sebagai metode alternatif. Pada penelitian ini dilakukan modifikasi metode pada alat Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) Perkin Elmer Optima 5300 agar diperoleh data yang bisa dipercaya dan diterima. Hasil penelitian dari metode alternatif ini memberikan kesimpulan bahwa panjang gelombang optimum (l) yang paling baik diguanakan untuk metode alternatif ini adalah pada 180.669 nm dengan akurasi = 100.7 %, Presisi = 0.78 %, Linieritas (R2) = 0.99968588, LoD = 0.00112, LoQ = 0.0316. Hasil analisis contoh solar menggunakan panjang gelombang (l) 180.669 nm memberikan nilai validasi yang sangat baik, dimana % CV lebih kecil dari 2/3 % Horwitz juga hasil analisis recovery (perolehan kembali) dari contoh menghasilkan nilai yang sangat baik yaitu 99.1233 %, hal ini menunjukan bahwa alat ICP – OES 5300 Perkin Elmer bisa digunakan untuk analisis kandungan sulfur dalam solar menggunakan metode alternatif ini.Kata kunci : Sulfur, ICP – OES, validas
STUDI TRANSPOR SENYAWA FENOL MENGGUNAKAN MEMBRAN CAIR POLIEUGENOL DENGAN PELARUT DIKLOROMETANA
Get PDFStudy on Phenol Compound Transport using Polieugenol Liquid Membrane with Dichloromrthane Solven        Phenol is a component in waste water that is very dangerous, because it is toxic, corosif on skins and carcinogenics. It can be separated by using liquid membranes. Membrane can be a very specific filter. Liquid membrans transport technique used three phase. The phase are donor phase that contain substance to be separated, membrane phase that contains ligan in the organic solvents, and aceptore phase that contain base as release agent of ligans complex. Polyeugenol have a condition as a ligan that is capable as selective chelate agent for phenol coumpounds. In this research, polieugenol were used with dichloromethane solvents as a membrane for separating and transporting phenol separated, NaOH as release phase with variating pHs, concentrations of release phase, transport time and membrane concentrations. The result showed that liquid membrane of polieugenol in dichloromethane solvent can transport phenol at source phase pH 6.5, at optimum released concentration was 0.75 M, optimum transport times was 72 hours, and optimum membran concentrations was 1,5×10-3 with % transport was 65.2%.Keywords : Liquid membrane, polyeugenol, dichlorometane, phenol ABSTRAK       Fenol merupakan salah satu komponen dalam air limbah yang sangat berbahaya, karena beracun dan bersifat korosif terhadap kulit serta karsinogenik. Fenol dapat dipisahkan dengan menggunakan  membran cair. Membran dapat bertindak sebagai filter yang sangat spesifik. Teknik transpor membran cair melibatkan tiga fasa yaitu fasa donor, mengandung bahan yang akan dipisahkan, fasa membran berisi ligan dalam pelarut organik dan fasa akseptor yang berisi basa sebagai agen pelepas dari kompleks ligan.Polieugenol mempunyai syarat sebagai ligan sehingga mampu berfungsi sebagai agen pengkhelat yang selektif untuk senyawa fenol. Pada penelitian ini digunakan polieugenol dengan pelarut diklorometana sebagai membran untuk pemisahan dan transpor senyawa fenol, dan  NaOH sebagai fasa pelucut dengan memvariasikan pH, konsentrasi fasa pelucut, waktu transpor dan konsentrasi membran. Hasil penelitian menunjukan bahwa membran cair polieugenol dalam pelarut diklorometana dapat mentranspor fenol pada pH fasa sumber optimum 6,5, pada konsentrasi pelucut optimum 0,75 M, waktu transpor optimum 72 jam, dan pada konsentrasi membran optimum 1,5×10-3 dengan % transpor 65,2%.Kata kunci : membran cair, polieugenol, diklorometana, feno
EFEKTIFITAS PENGIKATAN LOGAM Pb OLEH BAKTERI, Bacillus subtilis
Get PDFEffectiveness of Heavy Metal (Pb) Binding of Bactery Bacillus subtilis       The rapid development of technology and industries lead to higher environmental pollution by heavy metals, especially Pb. Reduction of heavy metals is commonly done using chemical and physical approach. Another alternative is biological technique which is more efficient due to its higher metal binding and readily available as materials. Bacillus subtilis was a potential bacterium in reducing heavy metal contamination. This study aimed to determine the B. subtilis binding effectiveness of Pb; to test the bacterial tolerance to Pb at varied concentrations; and to detect the accumulation sites of Pb within  B. subtilis. The results showed that B. subtilis was able to bind Pb with the effectiveness percentage  of 17.45%. Pb was accumulated in the cell walls.Keyword: Bacillus subtilis, Pb binding  ABSTRAK        Pesatnya perkembangan teknologi dan industri menyebabkan pencemaran lingkungan yang lebih tinggi dengan logam berat, terutama Pb. Pengurangan logam berat yang biasanya dilakukan dengan menggunakan bahan kimia dan pendekatan fisik. Alternatif lain adalah teknik biologi yang lebih efisien karena logam yang lebih tinggi mengikat dan tersedia sebagai bahan. Bacillus subtilis adalah bakteri potensial dalam mengurangi kontaminasi logam. Penelitian ini bertujuan untuk mendeterminasi B. subtilis yang efektivitas mengikat Pb; untuk menguji toleransi bakteri terhadap Pb pada konsentrasi yang bervariasi; dan untuk mendeteksi akumulasi Pb dalam Bacillus subtilis. Hasil penelitian menunjukkan bahwa B. subtilis mampu mengikat Pb dengan efektivitas persentase 17,45%. Pb terakumulasi dalam dinding sel.Kata Kunci : Bacillus subtilis, pengikatan P
ANALISIS PERTUMBUHAN DAN HASIL TANAMAN SUNGKAI (Peronema canescens Jack.) DI KALIMANTAN
Get PDFGrowth and Yield Analysis of Peronema canescens Jack. in Kalimantan         Sungkai (Peronema canescens) is a native and local species and one of some commercial trees which has a good prospect to be developed in timber estate in Kalimantan.This research was aimed to analyse sungkai plantation, neither the living percentage, productivity, economic cutting cycle, and also its profit. The data analysis was using the average of trees diameter, high and volume, mean annual increment, polynomial equation modelling and financial analysis i.e. net present value (NPV), benefit cost ratio (BCR) and internal rate of return (IRR). The research had been conducted at the community plantation in Kapuas District, Central Kalimantan Province since 1998 to 2010. The result of this research showed that living trees precentage at 12 years old was 89.7%, mean annual increment and its density were 10,14 m3 ha-1 and 997 tree/ha respectively. Equation modelling of sungkai plantation was y = 2,073 + 1,6623x - 0,0165x2 (R2= 84,05%). In the bank rate of 9% per year, the economic cutting cycle of this plantation was 15 years with net present value was NPV 58,49 million per ha. BCR 7,64 and IRR 11,75 If the bank rate of 6% and 12% per year, then net present value at the 15 years were NPV 92.65 and 36.6 million per ha respectively. The sangtein was suitable as timber estate and to increase the productivity of former shifting cultivation, scru, and low potential forests which were widespread, especially in Kalimantan.Keywords : Growth and yield, mean annual increment, Peronema canescens, economic cutting cycle ABSTRAK       Sungkai adalah jenis tanaman komersial lokal dan asli yang mempunyai prospek baik untuk dikembangkan dalam hutan tanaman Kalimantan. Penelitian ini bertujuan untuk mengetahui prosen hidup, produktivitas, siklus tebang optimum, dan keuntungan finansial dari tanaman sungkai. Penelitian dilakukan di hutan tanaman rakyat, Kabupaten Kapuas Provinsi Kalimantan Tengah. Obyek penelitian ialah tanaman sungkai yang ditanam sejak tahun 1998 pada tipe tanah Ultisol. Analisis data menggunakan nilai rataan diameter, tinggi dan volume, riap tahunan rata-rata tahunan, persamaan regresi, NPV, BCR dan IRR. Hasil penelitian menunjukkan bahwa pada umur 12 tahun prosen hidup tanaman mencapai 89,7 %, riap tahunan rata-rata 10,14 m3 ha-1 year-1 dengan kerapatan 997 pohon/ha. Model pertumbuhan tanaman sungkai ialah y = 2,073 + 1,6623x - 0,0165x2 (R2= 84,05%). Pada tingkat suku bunga pinjaman 9% per tahun, tanaman sungkai mempunyai siklus tebang ekonomi selama 15 tahun dengan nilai NPV Rp. 58,49 juta/ha, BCR: 7,64 dan IRR: 11,75%. Pada tingkat suku bunga pinjaman 6% dan 12% per tahun, maka pada siklus tebang selama 15 tahun, nilai NPVnya masing – masing menjadi Rp. 92,65 juta/ha dan Rp. 36,6 juta/ha. Tanaman sungkai sangat sesuai dikembangkan dalam hutan tanaman dan untuk meningkatkan produktivitas lahan bekas perladangan berpindah, semak belukar dan hutan potensi rendah yang tersebar luas, khususnya di Kalimantan.Kata kunci : Pertumbuhan dan hasil, riap tahunan rata – rata, Peronema canescens, siklus tebang ekonom