Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management)
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SKENARIO KEBIJAKAN PENGELOLAAN HUTAN RAKYAT BERKELANJUTAN DI KABUPATEN BOGOR
Get PDFThis study discusses the policy scenarios on private-forest management in Bogor. The aims of this study are: determining leverage attribut on private-forest and formulating policy models, and making scenario for the development of the sustainability index of privately managed forest. This study uses multidimensional scalling (MDS) to analyze five dimensions. By using ordinal score on certain attribute, i.e. 0 (the lowest) and 10 (the highest) of each attribute. Then, by using Rap-Pforest, we could estimate the leverage attribute of f each dimension. To prepare policy models will use a prospective analysis. Final stages, to build strategic scenarios model. The analysis showed that there are two dimensions, i.e. ecology and legal and institutional, are moderately sustainable. While for the dimensions of economy, socio-culture, and accessibility and technology are less sustain. Based on five dimensions sustainability index, this study concludes that63 indicators were used and resulting 21 leverage-attributes. Qualitative model formulation for policy scenarios are: HRB = f (EKN3, EKN4, SOS1, SOS3, LBG2, LBG3). Scenario II most realistic choice, this scenario has been able to increase the value of sustainability index of 46.35 (less sustainable) to 52.52 (quite sustainable). This study recommends, it is necessary to conduct the development strategy by involving all stakeholders as the most appropriate policy options to improve the sustainability of small scale privately managed forest in Bogor
ANALISIS POTENSI LAHAN DAN STRATEGI PENGEMBANGAN SAWAH BARU SECARA BERKELANJUTAN DI KECAMATAN JATIGEDE, KABUPATEN SUMEDANG, PROVINSI JAWA BARAT
Get PDFThe landuse change from paddy field to non-rice field in Java is increasing every year and this has an impact on the decreasing of national food security. Likewise the occurrence of land conversion of around 2,000 ha for the construction of Jatigede reservoir in Sumedang Regency, West Java Province has an impact on the decrease of rice production about 24 thousand tons of GKG (assuming rice productivity 6 ton/ha). The development of new sustainable rice fields is one of the solutions to improve food security and sustainability in the future both in Sumedang and Indonesia. The objectives of this research are: 1) to analyze the availability and suitability of land for the development of new paddy fields; 2) to analyze environmental feasibility and cost (environmental cost) in new rice field development activities; 3) analyze farmer institutional support in new rice field development activities; 4) to formulate the direction of new rice field development plan; and 5) to formulate a new rice field development strategy in Jatigede sub-district. The results are expected to be input for future planning for the development of new rice fields in Jatigede Subdistrict, Sumedang Regency. The study was conducted from December 2016 to May 2017. The type of data used consists of primary data and secondary data. Primary data is obtained from direct surveys to the field by conducting ground checks or through interviews. The results showed that the potential land available for the development of new paddy fields in Jatigede sub-district was 3,419 ha and from the potential land area will be developed into new paddy fields of 346 ha (4.18%) spread over 4 (four) villages, ie Cipicung 54 ha, Ciranggem Village covering 94 ha, Cisampih Village covering 107 ha and Karedok Village area of 91 ha. The result of feasibility test on new paddy field development activity in Jatigede subdistrict shows Net Present Value (NPV) is Rp. 92,893,000,000 and Benefit Cost Ratio (B/C) 3.32. Development strategies are: Respectively development strategies comprise (1) Optimize government financing assistance to accelerate the implementation of new paddy field target, (2) Together with the head of the farmer group association assist the paddy field construction process, (3) Conduct a survey of water resources and other supporting infrastructure around paddy field area, (4) Ensuring the new paddy field is not overlapping with other area, (5) Socialize the long-term benefits of the development of new paddy field by getting subsidy for three year since the first year development. (6) Encourage local governments to established immediately as LP2B areas and included in the RTRW of Jatigede District
NITROGEN CYCLING IN INDONESIAN AGRICULTURE AROUND 1968 TO 2008 AND ITS ENVIRONMENTAL IMPACTS
Get PDFThe objectives of this study were to examine the efficiency of nitrogen and its lost to the environment, to estimate its environmental impacts and their mitigation measures. Nitrogen mass-balance models were developed to determine production, efficiency and the nitrogen losses. The results showed the trend of the system, increased the lost and decreased the efficiency of nitrogen fertliser around 1968 dan 2008. The material balance model outputs predicted that around 140 kg N/ha.year in 2008 were lost and entering the environment or ecosystem. The future of Indonesian agriculture will be more intensive and fertiliser application will increase. Fertiliser impacts are decreased of nitrogen efficiency, soil organic matters, macro-elements and organisms, and groundwater contamination and air pollution. It is strongly recommended that the future of Indonesian agricultural development should sustain the production by optimising the input and cut the losses
Evaluasi Potensi Lahan Pengembangan Komoditas Strategis Perkebunan Kabupaten Sumba Tengah Provinsi Nusa Tenggara Timur
No full textTerdapat empat komoditi strategis perkebunan yang dikembangkan di wilayah Kabupaten Sumba Tengah yaitu kopi, kakao, jambu mete dan kemiri. Informasi potensi lahan pengembangan komoditi strategis masih terbatas. Tujuan penelitian: 1) Menentukan keunggulan komoditi terpilih, 2) Kesesuaian lahan, dan 3) Arahan wilayah pengembangan. Metode penelitian: Studi literature, Komoditas unggulan dengan metode LQ, Kelas kesesuaian lahan secara spasial dengan metode matching krakteristik lahan dan persyaratan tumbuh tanaman, dan arahan wilayah potensi pengembangan. Komoditas terpilih dengan wilayah basis. Kakao di Kecamatan: Katiku Tana, Katiku Tana Selatan, dan Mamboro. Kopi di Kecamatan: Katiku Tana dan Katiku Tana Selatan. Jambu Mete di Kecamatan Mamboro dan Umbu Ratu Nggay. Kemiri di Kecamatan : Mamboro dan Umbu Ratu Nggay Barat. Tingkat luas wilayah kelas kesesuaian lahan komoditas, Kakao dengan luas kelas S1: 103.327,5 ha, S2: 83.365,4 ha dan N: 225 ha. Kopi dengan luas kelas S1 123.664 ha, S2: 63.027,7 ha dan N: 226. Jambu mete dengan luas kelas S1: 5.716 ha, S2: 126.661,3 ha, S3: 54.313,1 ha dan N: 228 ha. Kemiri dengan luas kesesuian kelas S1: 165.567 ha, S2: 21.128,3 ha dan N: 223 ha. Arah wilayah pengembangan komoditas berdasarkan potensi lahan. Kakao di Kecamatan Katiku Tana, Katiku Tana Selatan dan Mamboro. Kopi di kecamatan Katiku Tana dan Katiku Tana Selatan. Jambu Mete wilayah pengembangan cukup potensi di kecamatan Mamboro, Umbu Ratu Nggay dan Umbu Ratu Nggay Barat. Kemiri wilayah pengembangan di kecamatan Katiku Tana Selatan, Mamboro dan Umbu Ratu Nggay Barat.
Kata Kunci: Evaluasi Potensi Lahan, Komoditas Unggulan Perkebunan, Kelas Kesesuaian, Arahan Pengembangan Wilayah
KONSENTRASI MERKURI PADA RAMBUT KEPALA DAN KESEHATAN MASYARAKAT PADA LOKASI PENAMBANGAN EMAS TRADISIONAL BULADU KABUPATEN GORONTALO UTARA
Get PDFThis study aims to identify mercury concentrations in head hair and its effect on public health at the traditional gold mining. The study was conducted at the gold mining, Buladu Village, North Gorontalo Regency. Samples were taken randomly from human head hair. Samples of public health condition were taken from respondents who served as the samples of mercury concentrations in the head hair. The number of respondents was 20 people. The samples of mercury in the head hair were analyzed at the Integrated Research and Testing Laboratory of UGM by using mercury analyzer. The quality standard used as a reference to the mercury concentrations in the head hair was the recommendation of the National Research Council (NCR), i.e. 12 ppm. The results of the analysis of the public health were tabulated and then interpreted. The results of the analysis indicated that the highest mercury concentration in the head hair was 952.85 mg/kg and the lowest was 0.03 mg/kg with an average mercury concentration of 55.09 mg/kg. This result was above the threshold quality standards established by NCR, i.e. 12 ppm. Many factors affect the mercury concentrations in humans, including education, income, environmental sanitation and food consumption. Waste dumped directly into the river will affect river water and marine aquatic animals. The consumption of food taken from the waters of Sulawesi Sea affects influence the mercury concentrations in the head hair
ANALISIS PERSEPSI DAN PARTISIPASI MASYARAKAT TERHADAP PENGELOLAAN SAMPAH RUMAH TANGGA DI JAKARTA SELATAN
No full textPopulation growth and changes in consumption pattern have increased the municipal waste volume in DKI Jakarta. Waste management issue has been more formidable after the government has failed to overcome the situation with sufficient waste management facilities. Hence, society’s active participation is needed to create a more comprehensive system of municipal waste management, based on “reduce, reuse, recycle” principle. The objective of this study is to (1) identify the community perception and participation in the household waste management, (2) analyze the correlation between the internal and external factors of individual with the perception on the household waste management, and (3) analyze the correlation between community perception and participation in household waste management. The observed variables are divided into two factors, namely internal factors and external factors. The data were collected using survey method by distributing questionnaire, while Chi Square Test and Spearman Rank Correlation Test were used for data processing. The results showed that respondents have positive perception and high participation in the household waste management. There is a significant correlation between the internal and external factors of individual with community perception on the household waste management. Community perception on household waste management is also significantly correlated to community participation in household waste management
PEMANFAATAN SERBUK GERGAJI SEBAGAI SUBSTITUSI BAHAN BAKAR PADA PROSES PEMBAKARAN - KILN DI PABRIK SEMEN DENGAN PENDEKATAN LIFE CYCLE ASSESMENT (LCA)
Get PDFCement production was a process that requires huge thermal energy and produces high greenhouse gas emissions. Co-processing or utilising alternative materials and alternative fuels for the combustion process in kiln was a solution to meet energy needs and reduce greenhouse gas emissions in the cement industry. This study aimed to analyze input, output, environmental impacts of cement production and calculate CO2-eq reduction from the system used alternative fuels on co-processing. The method used to determine differences and calculate CO2-eq reduction due to co-processing was life cycle assessment (LCA) and system approach. Based on the results of the LCA, the case 1 that used 100% coal energy required 3.50 GJ/ton-cement, 126 kWh/ton-cement, 2.19 L-diesel-oil/ton of cement and emited 0.84 ton-CO2-eq/ton-cement. Case 2 that had been substituted alternative fuels (saw dust) required 3.03 GJ per ton of cement, 118 kWh per ton of cement, 1.44 L diesel oil per ton of cement and emited 0.92 ton-CO2-eq per ton of cement. The results of global warming impact of case 2 was higher than case 1. The assumption of climate neutral made reduction global warming impact of case 2 by 14.65% and decrease CO2 emissions annually in plant by 71,601 tons CO2/year. This result show that utilization of saw dust as biomass of climate neutral can be applied as an input for overall company specific emissions calculation to meet government regulation
KEBERLANJUTAN PENGELOLAAN KAWASAN KONSERVASI PENYU DI PANTAI PANGUMBAHAN, SUKABUMI, JAWA BARAT
Get PDFaccordance with high exploitation of turtle in several sectors and will threatened the turtle sustainability in the future. The aim of this study is to analyze the situational condition of environmental biophysics, socio-economic of the population, and the potential of tourism object in Pangumbahan Beach turtle conservation area and to determine the sustainability status of conservation area management for ecotourism development. Descriptive, vegetation, situational, tourist attraction, and sustainability status analysis are used for this research. Result of Situational analysis shows community attitudes toward turtle conservation management mostly uncertain (44%) about the turtle conservation. Generally the condition of the green turtle nesting habitat at Pangumbahan Beach were categorized as appropriate to very appropriate based on habitat sustainability matrix of green turtle nesting. Turtle conservation sustainability index in Pangumbahan Beach of all dimensions are sustainable
PEMODELAN DISPERSI GAS DARI CEROBONG DENGAN MODEL GAUSSIAN
No full textAbstract. Pada saat ini ketersediaan data meteorologi profile di Indonesia yang biasanya diukur dengan radiosonde terbatas pada bandara-bandara nasional dan internasional. Sementara data tersebut diperlukan dalam pemodelan standar seperti AERMOD dan CALPUFF yang memerlukan preparasi data meteorologi yang rumit untuk mensimulasikan dispersi polutan dari cerobong pabrik/PLTU. Ketika model standar tersebut tidak dapat digunakan karena keterbatasan data, maka dapat digantikan dengan model yang lebih sederhana, walaupun akurasinya lebih rendah. Pemodelan dispersi emisi gas berbasis Gaussian-Pasquil cocok digunakan di daerah terpencil karena kesederhanaannya dalam preparasi data meteorologi. Pada model semacam ini hanya data meteorologi permukaan yang diperlukan. Data meteorologi profile tidak diperlukan dalam perhitungan stabilitas atmosfir. Makalah ini memaparkan konstruksi model Gaussian Plume berbasis stabilitas Pasquil . Model dirancang untuk mensimulasikan dispersi gas SO2 yang diemisikan oleh cerobong pabrik/PLTU. Reseptor dan cerobong disetup pada grid Cartesian yang posisinya merunut pada koordinat geografis. Terrain diasumsikan hampir flat dengan ketinggian maksimum 10% dari tinggi cerobong. Data jam-jaman meteorologi permukaan yang diperlukan berupa kecepatan dan arah angin, temperatur dan stabilitas atmosfir. Hasil selanjutnya dapat digambarkan dalam kontur dari rata-rata periode/tahunan, rata-rata kondisi tertinggi (1 jam, 3 jam, 8 jam dan 24 jam).Keywords: stabilitas Pasquil, dispersi polutan udara, model gaussian, PLT
The Accumulation of Heavy Metal (Lead And Copper) in Milkfish (Chanos-Chanos, Forskal) Ponds From Dukuh Tapak, Kelurahan Tugurejo, Semarang
No full textTapak River pollution that occurred for the last few years will lead to contamination of heavy metals in milkfish ponds located in Tapak area. This finding potentially causes the accumulation of heavy metals (lead and copper) in the water, sediments and organs (gills, liver and muscle) of milkfish and will affect fish productivity and food safety. This study related to the assessment of 2 (two) heavy metal accumulation in aquatic pond environment and the maximum limit of fish consumption based on Provisional Tolerable Weekly Intake (PTWI) and Estimated Weekly Intake (EWI) adopted from Turkmen (2009) and Elnabris (2013). The objectives of this study were to : (1) analyze the concentration factor of heavy metal in sediment and bioconcentration factor (BCF) of heavy metals in milkfish organ and (2) determine maximum tolerance limits for milkfish to be consumed. The concentration factor of heavy metal distribution in the sediments showed that the range of heavy metal content in the sediments was 1001.793± 143.573 – 6679.003±825.832 times compared to the heavy metal content in the column water. The calculation result of the average bioconcentration factor (BCF) of heavy metal (water) in each fish organ exhibited that Pb metal tended to be highly accumulative in all fish organs while Cu was low to high in accumulative. The BCF value of heavy metals (sediments) towards milkfish organ showed that Pb and Cu were slightly accumulative. The assessment results of EWI showed that the fish muscle was still suitable for adult consumption with a limit of 0.624 kg/week while the liver of milkfish was not suitable for consumption. Meanwhile, children were not allowed to consume milkfish from Tapak ponds.