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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 20 Documents
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Search results for , issue "Vol 11 No 1 (2011)" : 20 Documents clear
ARTIFICIAL NEURAL NETWORKS UNTUK PEMODELAN CURAH HUJAN-LIMPASAN PADA DAERAH ALIRAN SUNGAI (DAS) DI PULAU BALI IGB. Sila Dharma; IGA. Adnyana Putera; Putu Doddy Heka Ardana
Bumi Lestari Journal of Environment Vol 11 No 1 (2011)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

Rainfall-runoff transformation of a watershed is one of the most complex hydrology phenomena, nonlinier process, time-varying and spatial distribution. Rainfall-runoff relationships play an important role in water resource management planning and therefore, different types of models with various degrees of complexity have been developed for this purpose. The application of Artificial Neural Networks (ANNs) on rainfall-runoff modelling has studied more extensively in order to appreciate and fulfil the potential of this modelling approach. Back propagation method has used in this study for modelling monthly rainfall for small size catchments areas. ANN model developed in this study successfully predicts relationship for rainfall-runoff with 90.14% accuracy on learning process and 72.41% accuracy on testing process. These results show that ANN provides a systematic approach for runoff estimation and represents improvement in prediction accuracy.
PERSEPSI DAN PERILAKU KONSERVASI LAHAN PADA BERBAGAI KEMIRINGAN DAN DAMPAKNYA PADA PRODUKSI USAHATANI SAYURAN: STUDI KASUS DI KABUPATEN REJANG LEBONG PROVINSI BENGKULU Bambang Sumantri; Ketut Sukiyono
Bumi Lestari Journal of Environment Vol 11 No 1 (2011)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

This research was aimed to examine the perception of vegetable farmers on land conservation and investigating the impact of their perception and behavior toward land conservation on production. This research was conducted in Rejang Lebong District. On this research one hundred fifteen of respondents were selected as sample. Data collected by using stratified random sampling technique based on their land slope. Analytical descriptive method and double log models were used to analyze data which gathered from face to face interview guided by questionnaire. The result of the research showed that vegetable farmers had positive perception on land conservation. Their positive perception were reflected by their action in conserving their land, whether by bench terrace development or growing cover trees. The research also found that all variables included in the model had an expected sign, i.e., positive, except for cover trees growing and seed application that had negative sign. However, not all of these variables were different from zero. Only the cost of terrace development variable, fertilizer usage, land area, education, and farmer motivation to conserve their land had significant factors in influencing vegetable production, while farmers perception were not influenced.
KONDISI KOMUNITAS TERUMBU KARANG DI PANTAI BIAS PUTIH DESA BUGBUG KECAMATAN KARANGASEM KABUPATEN KARANGASEM BALI I Wayan Restu
Bumi Lestari Journal of Environment Vol 11 No 1 (2011)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

The extent of coral reefs in Bali province is 7200 ha. It spreads out in almost all districts, except Bangli. The condition status of coral reefs has been greatly reduced recently due to rampant fish bombing activities, making sea rocks, seaweed cultivation and the rapid growth of tourism. The conditions status of coral reefs in Bali (2010) are as follows: excellent (3.8%), good (35.8%), moderate (39.6%) and bad (20.8%). Research on the condition status of coral reefs in Bias Putih Beach of Bugbug Village, Karangasem District, Karangasem Regency, Bali is intended to provide basic data about the condition status of coral reefs that can be used as a consideration on its management. Manta Tow Survey and Line Intercept Transect were implemented as methods on this research. The results showed the condition status of coral reefs was between moderate to good with the description as follows: manta tow results showed that living coral cover were categorized between 2 and 3, with the percentage of cover between 11-50 %, while soft corals were categorized between 1 and 3, and the results of Line Intercept transect were categorized into showing up very well with the percentage of living coral coverage ranged between 66.34% and 87.36%. Species diversity of coral was observed to be high with H values ranging between 3,133934 and 3,167543 and its equitability values was observed to be high ranged between 0,94340 and 0,9535. Thus, it is concluded that the condition status of coral reefs in Bias Putih Beach, of Bugbug Village, Karangasem, Bali to be categorized into good or very good.
PELESTARIAN FLORA DI LINGKUNGAN PURA TAMAN AYUN MENUNJANG ATRAKSI NOMINASI WARISAN BUDAYA DUNIA Ni Nyoman Wirasiti; I Ketut Ginantra; A.A.G. Raka Dalem; I Ketut Muksin
Bumi Lestari Journal of Environment Vol 11 No 1 (2011)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

Taman Ayun is a tourist destination which is proposed as a world cultural heritage. Thus, the data about Taman Ayun are important things to be collected to support the proposal. This study is expected to provide data on flora. Data on flora were gathered based on site observation on September 5, 2008. The data collection was also supported by other data collecting techniques such as interview and literature review. Result of the study showed that there were 125 plant species around the temple. As much as 16,8 % were classified as rare/threatened or endangered, 1,6% rare and protected, and the rest (81,6 %) were not protected and not rare species. The highest proportion of the plant (30 %) were decorative plant. Others were material for ceremony (upakara) (21%), food and vegetables (19 %). All of those were covering 70 % of the plant. The rest were for medicine, providing shaded spots, animal fodder, other use and has not been used.
CARBON CAPTURE ON FLUIDIZED BED COMBUSTION OF BIOMASS AND WASTES FUELS I Nyoman Suprapta Winaya
Bumi Lestari Journal of Environment Vol 11 No 1 (2011)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

Usaha yang dilakukan secara terus menerus dalam rangka mengurangi emisi CO2 untuk mencegah terjadinya pemanasan global telah mendorong penggunaan energi baru seperti biomasa maupun sampah sebagai bahan bakar alternatif pengganti energi bahan bakar fosil. Akan tetapi, bila bahan bakar biomasa/sampah dimasukkan pada sistem pembakaran fluidized bed, evolusi zat volatil akan terjadi sangat cepat. Ini dikarenakan oleh tingginya laju perpindahan panas oleh material hamparan di dalam ruang bakar sehingga zat volatil hanya berevolusi di sekitar tempat pemasukan bahan bakar. Karena ketidakcukupan oksigen di bagian atas ruang bakar maka pembakaran sempurna sangat sulit terwujud. Formasi hidrokarbon sering terjadi dan diantisipasi akan memunculkan dioksin pada gas buang. Evolusi volatil juga menyebabkan temperatur sangat tinggi di sembarang tempat pada ruang bakar dan kondisi ini akan menyebabkan formasi emisi NOx . Penelitian ini bertujuan untuk menangkap karbon dari evolusi zat volatile yang terjadi pada pembakaran sistem fluidized bed berbahan bakar sampah. Karbon ditangkap dengan menggunakan partikel berpori sehingga terbentuk karbon-deposit. Pada penelitian ini, karbon-deposit dibakar kembali pada suhu pembakaran fluidized bed untuk meningkatkan efisiensi pembakaran. Dispersi horisontal karbon-deposit di atas hamparan material diukur berdasarkan besarnya laju pembakaran, skala horisontal ruang bakar dan dispersi horizontal karbon yang terbakar. Dengan memperhitungkan tingkat oksidasi dan konsentrasi oksigen pada pembakaran karbon-deposit, model perhitungan yang dimodifikasi dari model Kunni-Levenspiel dikembangkan untuk menggambarkan dispersi horizontal karbon-deposit tersebut. Hasil eksperimen dapat dibuktikan sama dengan model perhitungan yang dikembangkan.
TINGKAH LAKU MAKAN RUSA JAWA (CERVUS TIMORENSIS) YANG DIPELIHARA PADA LOKASI PENANGKARAN YANG BERBEDA Deden Ismail
Bumi Lestari Journal of Environment Vol 11 No 1 (2011)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

The research carried out on Java deer (Cervus timorensis) at two captive sites are in Cariu Bogor regency, which is lowlands and Ranca Upas Bandung regency which is a plateau. Both these locations have the altitude, temperature and air humidity, rainfall and different maintenance management. Observation on this research from the morning until late afternoon, 12 hours a day (at 06.00 am until 18.00 pm) lasted for 6 months from November 2005-May 2006. The purpose of this study to determine the feeding behavior: a) time of grazing; b) the amount of pull grazing per minute; c) the amount of cud per minute in the two breeding sites by sex and age groups. The results showed that the timing of grazing in the paddock, Javan deer in Cariu have longer and highly significant difference (P <0.01) than in Ranca Upas. When compared to the number of pull grazing per minute Javanese deer in each age group adults, youth and fawn in Cariu with the Ranca Upas respectively are: 59.15 ± 6.70> 46.44 6.39 (P<0.01); 55.64 ± 6.02> 45.00 ± 6.40 (P <0.01); 58.55 ± 9.06> 43.50 ± 2.12 (P <0.05 .) While many Javan Deer cud per minute in each age group adults, youth and fawn in Cariu compared with Ranca Upas respectively are: 58.60 ± 4.14 <62.00 ± 3.62 (P <0 , 01); 52.69 ± 5.04 <59.00 ± 2.53 (P <0.05); 46.70 ± 1.70 <49.50 ± 0.71 (P <0.05). High distinction, quality and type of grass that is eaten Javan deer in Cariu and Ranca Upas cause differences of long grazing in the paddock , the number of pull grazing per minute and the number of cud per minute, besides feeding the cut and carry on a Javan deer in Cariu cause time grazing in the paddock at the Javan deer in Cariu shorter than the Javan deer in Ranca Upas.
PEMETAAN POHON BERNILAI BUDAYA BALI YANG LANGKA DI KOTA DENPASAR Made Sudiana Mahendra; I Made Sukewijaya; I G. A.A. Rai Asmiwyati
Bumi Lestari Journal of Environment Vol 11 No 1 (2011)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

Plant has highly visible socio cultural role for Hindu people in Bali. Even though these plants were existed in the field, it was difficult to identify, monitor and update their existences. The objectives of this research are to identify the endangered socio cultural trees and to make a mapping system of the endangered socio cultural trees in Denpasar based on web. Mapping system was made using MySQL, PhP, Mapserver, Macromedia Dreamweaver and Mozila Firefox. As many as 39 species of socio cultural trees were categorized in endangered risk. The data inventory of cultural trees in Denpasar can be quickly accessed and effectively managed by Mapping Program.
REKONSTRUKSI PEMIKIRAN ETIKA LINGKUNGAN EKOFEMINISME SEBAGAI FONDASI PENGELOLAAN HUTAN LESTARI Bernadus Wibowo Suliantoro
Bumi Lestari Journal of Environment Vol 11 No 1 (2011)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

The destruction of nature is caused by the wrong human’s point of view towards neighbourhoods. Ecofeminism assumes the caused factor of nature destruction comes from patriarchy culture which more on dualistic logic, hierarchy and the fight for domination. The thought of patriarchy causes destruction of nature and oppression of woman. Ecofeminism thought is interesting to be researched because it offers alternative vision which more sociable and gender balanced. The aim of this research is to explicit, critically evaluate, formulate concept of ecofemisthics ethics thought comprehensively and to reveal new vision relating to keep forest preservation. The chosen literature is analyzed using philosophy method: description, interpretation, and holistic. The result of this research shows that nature preservation is lasting and oppression towards woman is stopped if society abandoned patriarchy thought. Ecofeminism develops the concept of care ethics holistically, interactively, non-reduction, and participatively. Principe of ethics which need to be concerned are responsibility towards the whole biosphere, cosmic solidarity, keeping balance with nature, equal relation, careens and simplicity. The excess of ecofeminism succed in realizing the danger of patriarchy thought towards woman and nature. The weakness of it is that it generalizes and universalizes feministhics values uniformity towards all women instead of a priory negative towards the quality of masculinity values. Ecofeminism develops human moral responsibility based on women special experiences.
INTERVENSI ERGONOMI PADA AKTIVITAS BELAJAR DI RUMAH KOS DAERAH DINGIN MENINGKATKAN KINERJA MAHASISWA Meity Martina Pungus; Ketut Tirtayasa
Bumi Lestari Journal of Environment Vol 11 No 1 (2011)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

Learning activity at home is a routine task performed by the students as the implementation of academic curriculum. Most of activities done by the students in respect to the implementation of the academic curriculum such as in preparing self and structured tasks, in writing practicum reports, in preparing for the mid and last exams of the semester, are done at home. In general, the students of the faculty of mathematics and natural sciences (FMNS), Manado State University, live in homes of Minahasa tradition. In fact, conventional activity done by the students at the lease home of Minahasa tradition in cool area showed unfavorable risks to students based on the load of learning with indicators of musculoskeletal complaints, boredom, and fatigue. Consequently, the students were not yet able to attain the intended performance based on indicators the accuracy, speed, constancy and the results of working. In other words, the conventional activity is not able to be an ergonomic one. To overcome the problems, by using total ergonomics approach (TEA), it has made the efforts of ergonomics interventions. In order to test the capability of the ergonomics interventions, it had been done a research with the hypothesis, the ergonomics interventions on the activity in boardinghouse of Minahasa tradition: (1) increases the accuracy of working; (2) increase the speed of working; (3) increase the constancy of working; and (4) increase the results of working of the students. This research was done in two periods by utilizing the treatment by subject design. The first period, without intervention, was done during four weeks. The second period, with intervention, was also done during four weeks. The subjects utilized in the research were as many as 15 persons. The measurements of dependent variables were done before and after doing the activity of learning in every unit of activity. The results of the research showed that the ergonomics interventions on the learning activities in boardinghouse could significantly (p<0.05): (1) increases the accuracy of working 55.06%; (2) increase the speed of working 17.32%; (3) increase the constancy of working 30.72%; and (4) increase the results of working of the students 131.44%. The ergonomics interventions were successful in overcoming the ergonomic problems in the learning activity in boardinghouse. Based on the research it can be concluded that the ergonomics interventions can increase the performance of the students with indicators; increasing the accuracy of working; increasing the speed of working; increasing the constancy of working; and increasing the results of working of the students. It can be suggested that for the lecture of Basics Physics II, the learning activity with ergonomic interventions can be an alternative for the lecturer team so that the students achieve the intended performance.
SIKAP PEDAGANG KAKI LIMA TERHADAP LINGKUNGAN DI KOTA DENPASAR I Wayan Wana Pariartha
Bumi Lestari Journal of Environment Vol 11 No 1 (2011)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

Human with his environment is an ecosystem, i.e. as an integrated order and holistic system among all comprehensive environmental elements that affect each other. Therefore the attitude of the human in this study is sidewalk vendors on the environment need to be investigated. The attitude of the trash is one of the indicators used in this study. The principal issues in this study is whether it is true that the educational background, age and income affect the manner and attitude of street vendors in the trash? The aim of this study is, to know the effect of educational background, age and attitude of street vendor’s income to dispose of waste. This study was a survey which was held in four Districts in Denpasar. Samples were collected by quota sampling system, i.e. of 75 persons in each district so that the number of respondents as many as 300 people. Data was collected by using questionnaires with was proceeded by field observation. The collected data was analyzed descriptively with the help of quantitative data in the form of cross table. The study found that, factor income each person in relation to attitudes toward issues of environmental cleanliness, have a positive correlation, It just revealed at the answers most of the respondent of street vendors in the West Denpasar District. Meanwhile relations with the educational level of attitude towards the environment and community interests, seems also to have no positive correlation, unless a majority of respondents in North Denpasar District showed a positive relationship, where the higher education tends respondents attained greater levels of concern for the level of cleanliness environment. On the other hand also showed that age, as independent variables that affect the attitudes of respondents to the interests of view of environmental cleanliness has a positive correlation at the North Denpasar District and South Denpasar District, In the contrary a negative correlation occurred in the of East Denpasar District and West Denpasar District.

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