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Bumi Lestari
Published by Universitas Udayana
ISSN : 14119668     EISSN : 25276158     DOI : https://doi.org/10.24843/blje
Core Subject : Humanities, Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Humanities Earth & Planetary Sciences Energy Environmental Science
Bumi Lestari Journal of Environment (p-ISSN: 1411-9668; e-ISSN: 2527-6158) is a peer-reviewed journal, presents original research articles and letters in all areas of environmental studies and environmental sciences (biotic, abiotic and social/cultural). This journal has been indexed by cabdirect cabi.org, AJD (Academic Journals Database), ISJD (Indonesian Scientific Journal Database), IndexCopernicus, Portal Garuda, researchBib and Google Scholar. The journal is published by Environmental Research Center (PPLH) of Udayana University. The journal is published two times a year: February and August in both printed and online versions. The online version is free access and download. This journal is devoted to publish research papers such as environmental biology, environmental physics, environmental health, ecology, geosciences and environmental chemistry including such matters as land, water, food, conservation, population, risk analysis, pollution, energy, economics of ecological and non-ecological approaches, social advocacy of arguments for change, analytical methods, legal measures, implications of urbanism, energy choices, waste disposal, health effects, recycling, transport systems, political approaches, social impacts and other issues of mass society. There is concern also for marginal areas, under-developed societies, minorities, species loss, etc. The purpose of this journal is to provide input and its solution to the environmental problems that has happened or will be happen from the results of researchs.
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Ilmu Lingkungan (Lain-Lain)
Articles 445 Documents
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STUDI ANALISIS PENGUJIAN LOGAM BERAT PADA BADAN AIR, BIOTA DAN SEDIMEN DI PERAIRAN MUARA DAS BARITO Dini Sofarini; Abdur Rahman; Ichsan Ridwan
Bumi Lestari Journal of Environment Vol 10 No 1 (2010)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

This research aimed to determine heavy metal content at water body, sediment and biota, determining plankton what overflows and parameter of water quality which not fulfill standard criterion quality of water in Estuary of Barito River. Result of research showed that heavy metal rate at body of water especially Hg (0,2753 mg/l), and Pb (0,17667 mg/l) residing at biota (Giant Prawn have accumulate by heavy metal of Hg. Pb, Cu, As, Cr6+ and Cd. Sediment residing at Estuary of Barito River have accumulate by heavy metal but still under maximum boundary which have been specified. Metal rate residing in boundary sill that is cadmium metal rate (Cd) with assess metal range average 0,5655 - 0,8891 ppm, residing in of sill which have been specified equal to 0,3 ppm. Status of water quality at station perception according to Model of STORET categorized is weight, while pursuant to Model of Environmental Quality Index ( EQI) categorized as impure territorial water.
BAMBU DENGAN BERBAGAI MANFAATNYA K. Widnyana
Bumi Lestari Journal of Environment Vol 8 No 1 (2008)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

Bamboo during the time less get existence cause that assumed did not be important. This ascription cause that bamboo did not become the high economic valuable kommodity for society. During the time rehabilitations of the critical farm and forest area almost everything use the crop tree and next to nothing bamboo cultivation. Studies indicate that one hectare of bamboo crop can permeate more than 12 ton CO2 from the air. Bamboo also more effective in conservation irrigate where permeable bamboo 90% rainwater, while tree only 35 - 40%. Management and good bamboo crop can improve the society economics. Young bamboo can be used for the vegetable of bamboo bar and for the requirement of industrials, construction material, and crafts. If cycling enterpasing of bamboo forest during 20 year, hence total fund requirement reach the Rp 87.960.100,00 per ha with the acquirement [of] result of equal to Rp 767.520.000,00. Thereby the effort competent bamboo cultivation visible and profit.
KOMUNITAS MOLUSKA DI PADANG LAMUN PANTAI WORI, SULAWESI UTARA Ucu Yanu Arbi
Bumi Lestari Journal of Environment Vol 12 No 1 (2012)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

Observation on molluscs on seagrass beds ecosystem of Wori waters, North Sulawesi was conducted on April and June 2008. Seagrass beds of Wori waters has a good condition. Molluscs as one of occupier marine live in seagrass beds. The observation was aimed to get an idea on the condition of molluscs at seagrass beds ecosystem of Wori waters. It was made at 7 stations of 3 location. Molluscs samples in quadrant transect line from the edge of the beach to the sea were counted and identified. 634 individual from 163 species of molluscs was identified consist of 125 species Gastropoda and 38 species Pelecypoda. Pyrene scripta (Columbellidae) Vexillum plicarium (Costellariidae), Cypraea annulus (Cypraeidae) and Strombus urceus (Strombidae) class of Gastropoda were the common and widely distributed molluscs. Molluscs community on seagras beds of Wori waters on medium diversity. The highest diversity index (H) (1.62) was found at Station 7 and the lowest (1.303) was found at Station 4. An evenness index (J) was 0.841 to 0.969 and richness index (D) was 70.673 to 107.63.
REDUKSI LOGAM BERAT CHROMIUM (VI) DENGAN FOTOKATALIS KOMPOSIT TiO2-SiO2 Candra Purnawan
Bumi Lestari Journal of Environment Vol 13 No 2 (2013)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

AbstractsComposite TiO2-SiO2 has been synthesized using sol-gel process with starting materialsTiCl4 and Na2SiO3. The purposes of this research were to know the effect of compositecomposition, pH solution and UV radiation time for reduced Chromium (VI) cations. Theidentification and characterization of composite were done by infrared spectroscopy (IR)and X-Ray Diffraction. Condition of Chromium (VI) reduction by composite TiO2-SiO2 werecarried out with variation of composite TiO2-SiO2 concentration or the ratio Ti:Si were1:0,1 ; 1:0,5 ; 1:1 ; 1:1,5 ; 1:2. Variation of pH solution in 3,0; 3,5; 4,0; 4,5; 5,0; 5,5; 6,0; 6,5;7,0 and variation of UV radiation times in 2, 4, 6, 12, 18, 24, 30, 36, 42, 48 hours.The result showed that XRD characteristic of TiO2-SiO2 composite showed 2q peaks at 22.94degrees and 36.24 degrees. IR characteristic of TiO2-SiO2 showed absorption of Ti-O-Si inthe wave number 962 cm-1. The optimum reduction of Chromium (VI) cations using TiO2-SiO2 composite in Ti:Si = 1:1 composition, pH 3 and with 18 hours radiation times.
ESTIMASI BIOMASSA PERMUKAAN DAN STOK KARBON PADA TEGAKAN POHON Avicennia marina DAN Rhizophora mucronata DI PERAIRAN PESISIR OEBELO KABUPATEN KUPANG Glucklich Manafe; Michael Riwu Kaho; Fonny Risamasu
Bumi Lestari Journal of Environment Vol 16 No 2 (2016)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/blje.2016.v16.i02.p09

Abstract

Mangrove forest has an important function for living thing especially in the ocean and coastal area. Besides as feeding and nursery ground, mangrove forest is also has a function as carbon sinker. The utilizing of mangrove forest as a corbon sinker is one of ways to reduce CO2 in atmosphere. Mangrove forest in Oebelo village has a capability to utilize as carbon sinker. The aim of this research was to estimate above ground biomass and carbon reserve from two mangrove species Avicennia marina and Rhizopora mucronata in coastal area of Oebelo Village. In this research data was collected from diameter breast high and litter from forest floor. Alometric was used to estimate the above ground biomass. After data collected, analysis would continue with t test to know the different between these two species.The result showed A. marina and R. mucronata were different, the highest biomass, carbon reserve and CO2 sequestration were in A.marina respectively 118.80 Mg.ha-1, 54.65 Mg.ha-1, 200.37 Mg.ha-1 and R. mucronata respectively 28.90 Mg.ha-1, 13.30 Mg.ha-1, 48.75 Mg.ha-1. The result for litter biomass and carbon reserve showed there was no different between these tow species.
PENINGKATAN KUALITAS TANAH DALAM MEWUJUDKAN PRODUKTIVITAS LAHAN PERTANIAN SECARA BERKELANJUTAN I Made Adnyana
Bumi Lestari Journal of Environment Vol 11 No 1 (2011)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

Soil survey and analysis for evaluating soil quality was done at paddy soil of Tabanan regency, to rehabilitate the soil quality on physically, chemically, and biologically, respectively, and for increased the sustainable productivity. Soil samples were collected from top soil (0-20 cm) and subsoil (20-60 cm), selected on composite sampling. In this study, the soil characteristics analyzed is: soil texture, caution exchange capacity, base saturated, organic matter, P and K contents. Analysis results showed that most of Tabanan regency paddy soil had a medium physical-quality, very low to low chemical-quality, low biological-quality, and low productivity. To implementation the land agriculture productivity, could be increased the soil quality with integrated fertilization recommendation by combined inorganic fertilizers (Urea and SP-36) and organic fertilizers (manure and straw) with suitable dosage.
JENIS-JENIS DAN KARAKTERISTIK BURUNG YANG DITEMUKAN DI KAWASAN BEDUGUL DAN SEKITARNYA N. N. Wirasiti; N. M. Rai Suarni; A. A. G. Raka Dalem
Bumi Lestari Journal of Environment Vol 5 No 2
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

A study on birds (species and their characteristics) was carried out in Bedugul(Bali) between November and December 2004. Observation was made along transectlines which are set prior to the study. Species of birds observed were identified andrecorded. In addition, their distributions, status, source of food, reproductive seasons, aswell as migration patterns (whether migrant species or not) were determined. Thisstandard sampling strategy was also supported by casual observation and interview.Results of this study showed that Bedugul and surrounding area have a significantrole in conservation of Bali birds, because at least 56 species of birds have beenidentified in this area, which comprises of 18% of Bali birds. Conservation priorityshould be put on 8 species (14%) of the birds which are protected by law, as well as on 7% of endemic species (for Java and Bali). In addition, conservation effort should be alsogiven priority to 9% of birds that considered to be rare and potentially that be locallyextict. Habitat conservation should becoming focus of attention since it determines theavailability of food sources for those birds. Conservation on forest, plantation as well asshrubs should become focus of attention since these become habitats of more than a half(57%) of birds available in this area.
DIVERSITAS FLORA DI BUKIT ABAH, KABUPATEN KLUNGKUNG UNTUK MENDUKUNG PENGEMBANGAN EKOWISATA I.N. Rai; I Made Sukewijaya; I Gusti Alit Gunadi
Bumi Lestari Journal of Environment Vol 9 No 1 (2009)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

Goverment of Klungkung Regency, Bali province has a plan to develop an ecotourism area at Bukit Abah. The area is located within Besan Village, District of Dawan. In associated with this plan, a study has been conducted to identify the availability of diversity of flora in this site. The study was conducted by plant type stocktaking and analysis of vegetation methods. Results of plant type stocktaking shown that there were 126 plant species in the area, which were classified into 54 families. In addition, the analysis of vegetation indicated that there were a wide diversity of plants identified in Bukit Abah, with a diversity index (H) of >1.5. The high diversity of flora on the site had made a potential of attractive attention for developing of ecotourism in this area. It is suggested to accomplish an informative plantation labeling and vegetation conservation in associated with the development of the ecotourism plan
PENGARUH PENYULUHAN KESEHATAN LINGKUNGAN TERHADAP TINGKAT PENGETAHUAN DAN PELAKSANAAN KESEHATAN LINGKUNGAN SMP NEGERI TAMBAKSARI KECAMATAN TAMBAKSARI KABUPATEN CIAMIS Yoni Hermawan
Bumi Lestari Journal of Environment Vol 13 No 1 (2013)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

AbstrakHealthy behaviors at school showed unsatisfactory result, this can be seen from the result ofquick survey conducted in 2009 in the regency of Ciamis which shows: PHBS School levelI: 40,8%, PHBS School Level II: 33,3%, PHBS School Level 3: 20,5% and PHBS schoolLevel IV: 5,4%. From the result of the survey, behavioral problems are found: 83,7% studentssmoke, 63,6 students have not been exercising regularly, whereas environmental issuesinclude: Schools that haven’t owned latrines 63%, schools that haven’t managed theirwastes properly: 62%, and schools that haven’t had sewers:68%, the influence ofenvironmental health education to the level of students’ knowledge and implementation ofenvironmental health at one of the Junior High School at Tambaksari, CIamis District in2011. The research method is experimental method with pretest and post test approach. Theresult shows that before counseled, the student’s knowledge are largely categorized asadequate, that is 56 students (66,7%) and after they were given the counseling, the student’sknowledge largely categorized as decent, that is 51 students (60,7%). Based on the T-Testresult, the value of ñ is 0,000, so it can be concluded that there was influence of theenvironmental counseling on the level of knowledge in one of the Junior High School inTambaksari, CIamis District in the year of 2011 because the value of á is higher than ñ (á >ñ) (0,05 > 0,000). The implementation of environmental health before the counseling aregiven mostly are categorized as negative that is as many as 62 people (73,8%) and afterbeing given the counseling, student’s knowledge mostly categorized as positive that is 55people (65,5%). Based on the T-Test result, the value of ñ is 0,000, so it can be concludedthat there was influence of the environmental counseling on the level of knowledge in oneof the Junior High School in Tambaksari, CIamis District in the year of 2011 because thevalue of á is higher than ñ (á > ñ) (0,05 > 0,000), the result of the test results of the study ofthe influence of environmental health education on the level of students’ knowledge andimplementation of environmental health at one of the Junior High School in Tambaksari,CIamis District in the year 2011.
PENGARUH JUMLAH PEG 200 DAN TEMPERATUR ANNEALING TERHADAP MORFOLOGI DAN STRUKTUR NANOPARTIKEL TiO2 DENGAN METODE SINTESIS SIMPLE HEATING Tuty Emilia Agustina; Fitri Suryani Arsyad; Mikrajuddin Abdullah
Bumi Lestari Journal of Environment Vol 13 No 1 (2013)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

The surface area of a photocatalyst is an important factor that effect decomposition process of colored wastewater. Increasing the catalyst particle surface area will increase the UV light absorbed thus enhance the photacatalysis process. Bulk TiO2 will have the higher surface area if it is made in the nano size. As a photocatalyst, nanoparticle of TiO2 is more efficient than bulk of TiO2. The nanoparticle of TiO2 can be made in various ways, for example by simple heating method. In this study, the synthesis of nanoparticle TiO2 was investigated by optimize the amount of polyethilene glycol (PEG 200) used and the annealing temperature. The amount of PEG 200 was varied between 6-18 ml. Moreover, the annealing temperature was varied in the range of 600-700oC. After synthesizing, the nanoparticles of TiO2 then characterize by using scanning electron microscope (SEM) to observe the morphology, and by using the X-ray difraction (XRD) to find the crystal structure and the particle size. Based on the characterization, it was found that the smallest nanoparticle of TiO2 have a 29 nm in size was produced by using the 12 ml of PEG at the annealing temperature of 600oC.

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