Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management)
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KUALITAS PERAIRAN MANGROVE DI CIASEM PAMANUKAN, KABUPATEN SUBANG, JAWA BARAT
Get PDFThis study aimed to evaluate the water quality of mangrove ecosystem indegraded mangrove forest areas, either already or not rehabilitated. The research was conducted at the Ciasem protected forest areas, BKPH Ciasem Pamanukan (RPH Poponcol, RPH Bobos, and Tegal Tangkil RPH), Subang regency, West Java province. Observations and measurements of mangrove stands were performed using line transect and sample plots method (Line Transect Plot). Substrate and water samples were taken and analyzed in the laboratory. The results showed that the mangrove ecosystem in Subang was dominated by Avicennia sp and Rhizophora sp. Avicennia more adaptive to the shallow water, while Rhizophora more adaptive to an area closer or direct contact with the sea. Water quality conditions at the three locations were quite varied and still within the quality standard range for mangrove waters, except the BOD and DO parameters that need to be recovered because they out of the standard. Fertility conditions (physics and chemistry) of sediment (substrate) were generally in good condition for plant growth
ARAHAN KEBIJAKAN MITIGASI PADA ZONA RAWAN BANJIR KABUPATEN LIMAPULUH KOTA, PROVINSI SUMATERA BARAT
Get PDFIndonesia is a country that has a wet tropical climate, so that about 60 % of the cities in Indonesia is very a hazard to flood. The floods have caused many losses to humans. The purpose of this study is determine the direction of development policy mitigation of flood hazard zones in Limapuluh Kota District, by using GIS analysis with the overlay technique. The indicators used to determine the flood hazard zones are rainfall, slope, landform, soil type, geology, elevation, and land use. Mitigation policy directives using AHP analysis involving 15 experts with conservation criteria, regulations, community capacity. The results showed 6,2 % is a very flood zone. Three main landing to reduce the impact of floods is disaster education, improved socialization in flood hazard zones, and planning of based spatial disaster
PENERAPAN METODA FUZZY DALAM KLASIFIKASI LAHAN KRITIS BERBASIS HYDRAULIC RESPONSE UNIT (HRU) SUBDAS CISANGKUY
Get PDFVarious natural disasters, such as floods and landslides, are often associated with extreme weather conditions, especially rainfall, where in fact the possibility of such a disaster will be smaller if the carrying capacity of the land is still good. The decrease of land carrying capacity is often due to land use change, so that the land is not capable to perform it functions and is categorized as critical land. The decline in land carrying capacity will affect other resources, especially water resources. Anticipatory measures of natural disasters such as floods and landslides can perfectly prepared if information regarding land conditions, including land criticality, are available in detail and up to date. The classification and mapping of land criticality becomes an important component in the preparation of land rehabilitation and natural disaster prevention plans including setting the priority actions. The Minister of Forestry Regulation no P.32 / Menhut-II / 2009 concerning Procedures for Preparation of Forest and Watershed Technical Rehabilitation Plan was use as criteria for land classification and both Fuzzy and Crisp calculation methods were applied to calculate the final score. Different classification result was found in 23 HURL and comparing to actual the condition, the Fuzzy method gives more accurate result than Crisp method
POTENSI BAHAYA BAGI KESELAMATAN PENGUNJUNG DI KAWASAN WISATA PANTAI PANGANDARAN KABUPATEN PANGANDARAN JAWA BARAT
Get PDFPangandaran Beach Tourism Area is one of leading tourism areas in West Java. During certain period of time, hazard has often cause accidents toward visitors in the area. Therefore, there is a need to identify physical and biological hazards which threaten visitors’ safety in order to develop visitor safety management. Research was carried out in June – July 2011, and an update was conducted in January – February 2017, which covered three locations, i.e. Pantai Barat, Pantai Timur, and Pantai Pasir Putih. Field observation, interview with visitors, community and lifeguard, and literature review were employed in data collection. A hundred respondents for each visitor and community was selected using convenient sampling method. The result found rip current, plunging wave, tsunami, earthquake, wave, and tide as physical hazard, while jellyfish, sea snake, sea urchin, lionfish, and stone fish as biological hazard found in the sea, and long-tailed macaque as terrestrial biological hazard. Rip current possessed substantial risk that had to be avoided through the establishment of swimming prohibition area. Visitor’s safety management technique option for rip current hazard involved a socialization toward visitors about self-rescue technique in case they are swept by rip current
Life Cycle assessment of vehicle fuels on production proccess in refinery field
No full textIndonesia as one of the developing countries has a high dependence on petroleum fuels derived from petroleum refinery as the main energy source. the use of foil in Indonesia is dominated to meet the needs of transportation vehicles. Fuel oil as a source of energy into the spotlight in the world lately because of the impact of environmental degradation that arise from the utilization. The industrial activity of fuel oil production in refineries is inseparable from the environmental impacts. The oil processing process at the refinery is the second highest emission contributor after the use of fuel oil itself during its product life cycle. In this research LCA analysis is conducted for the production of gasoline (bensin) and gasoil (diesel) vehicle fuels during processing at the refinery to compare the environmental impact of each type of fuel. From the result of LCA analysis, it is known that from two types of vehicle fuel, to produce 1 kilo litter of gasoline (bensin) type more energy and produce higher emission compared to diesel type gas (gasoil) fuel production. The gasoline fuel produced in the platformer unit is the product that has the highest emission contribution in its production process with greenhouse gas emissions of 1 Ton CO-2eq and the acid gas emissions of 0.001 Ton SO-2eq per 1 kilo litter of the resulting product
ANALISIS KEBERLANJUTAN USAHATANI PADI SAWAH DI KECAMATAN SOREANG KABUPATEN BANDUNG
Get PDFRice farming in Soreang district of Bandung Regency face problems that pose a threat to the sustainability of food security. This research objectives is to analyse and assess the sustainability of rice farming in Soreang District with Rapid Appraisal Usahatani Padi (RAP-FARM) using Multidimensional Scaling (MDS) method. Results shows rice farming in Soreang District assessment using RAP-FARM yield 49.07 in sustainability index which can be categorized as less sustainable. Leverage analysis results showed that out of 48 existing attributes, 21 sensitive attributes proven to have influence on the rice farming sustainability index. The perspective analysis shows that there are 6 key factors that have significant influence on wetland rice farming which are: (1) conformity of land usage to the land properties, (2) farmers motivation, (3) organic material usage and utilization of farm waste, (4) freedom from pest infestations and diseases, (5) land fertility, and (6) usage of chemical pesticides. The efforts for improving rice farming in Soreang Regency require a sustainability index value by way of managing and repairing sensitive attributes with attribute 21 focus on improvements of the sensitive 6 key factors attribute against the rice farming
KARAKTERISTIK LAHAN DAN KUALITAS KEMANISAN UBI JALAR CILEMBU
Get PDFThe Cilembu sweet potato is the popular food crop from specific location in Sumedang, West Java. Sweetness degree is one of key indicators for this commodity. Sweetness degree relate to sugar content. Currently, Cilembu sweet potato variety was grown by farmers is Rancing. They were local culture on cultivation and storage of Cilembu sweet potato. Study of Cilembu sweet potato based on land characteristics on cultivation location and sweetness quality along storage periods between different cultivation locations is limited. The objectives of this study were to determined influence of land characteristics of cultivation locations and storage periods on sweetness quality of Cilembu sweet potato. Samples were taken from harvested tubers from Cilembu, Rancakalong, Sukasari, Cicalengka, and Jalaksana cultivation location using purposive sampling method. Sweetness degree was measured by total sugar content using luff schoorl method. The experiment design was used split plot design. The experiment room controlled at the same condition. The storage periods was observed at 0, 1, 2, 3, and 4 weeks after harvest. The role of land characteristics on the sweetness quality of Cilembu sweet potato was used analysis of regression and t test for equality of means. The result showed that storage periods was significantly affect the sweetness quality of Cilembu sweet potato, while the cultivation locations did not significant influence on sweetness quality. They were not interaction between both factors. The chemical and physical soil properties, elevation and climate properties affect differences of sweetness quality of Cilembu sweet potato on different cultivation locations
ANALISIS CURAH HUJAN DAN DEBIT MODEL SWAT DENGAN METODE MOVING AVERAGE DI DAS CILIWUNG HULU
Get PDFWatershed can be regarded as a hydrological system that has a function in transforming rainwater as an input into outputs such as flow and sediment. The transformation of inputs into outputs has specific forms and properties. The transformation involves many processes, including processes occurred on the surface of the land, river basins, in soil and aquifer. This study aimed to apply the SWAT model in Ciliwung Hulu Watershed, asses the effect of average rainfall on 3 days, 5 days, 7 days and 10 days of the hydrological characteristics in Ciliwung Hulu Watershed. The correlation coefficient (r) between rainfall and discharge was positive, it indicated that there was an unidirectional relationship between rainfall and discharge in the upstream, midstream and downstream of the watershed. The upper limit ratio of discharge had a downward trend from upstream to downstream, while the lower limit ratio of discharge had an upward trend from upstream to downstream. It showed that the discharge peak in Ciliwung Hulu Watershed from upstream to downstream had a downward trend while the baseflow from upstream to downstream had an upward trend. It showed that the upstream of Ciliwung Hulu Watershed had the highest ratio of discharge peak and baseflow so it needs the soil and water conservations and technical civil measures. The discussion concluded that the SWAT model could be well applied in Ciliwung Hulu Watershed, the most affecting average rainfall on the hydrological characteristics was the average rainfall of 10 days. On average rainfall of 10 days, all components had contributed maximally for river discharge
KAJIAN EFEKTIVITAS PELAKSANAAN AMDAL BIDANG ENERGI DAN SUMBER DAYA MINERAL DALAM PELESTARIAN KAWASAN LINDUNG DI KABUPATEN BENGKULU TENGAH
No full textDevelopment is a process of environmental and natural resource management for a prosperous of human life. The effort to conservation and prevent pollution or environmental damage includes planning, utilization control, maintenance, supervision and enforcement. one of the instrument is Environmental Impact Assessment (EIA). The district Middle of Bengkulu has resources of coal mining. Therefore, the production process can have an impact of environmental especially in protected area. The research was conducted at Middle of Bengkulu on January-February 2016. The purpose of this study are to identify the coal mining activities, analyze the effectiveness from EIA of energy and mine resources in conservation of protected area at Middle of Bengkulu and formulate the policies of effectiveness from EIA implementation in conserving the protected area. The research data obtained through observation, interviews, review of the literature and Geografic Information System (GIS) analysis to the change of land cover and land use. Weighting or scoring for the quality analysis of documents and the eligibility criteria. The result of analysis shows that the effectiveness of implementation of the EIA depend on attitude of companies. The EIA imlementation is two coal mining companies are still activ, showing that one of these companies has effective working aspects of obedience >90%. In the other companies can be said to be ineffective for many violations. EIA effectiveness of EMR in the conservation of protected areas can not be said to be effective, it is showed by the deteriorating condition of the river bank and Hunting Park Semidang Bukit Kabu of protected areas were damage. But the change was also influenced by industrial and domestic waste and river water quality as well as encroachers in hunting park
EVALUASI KESESUAIAN LAHAN UNTUK KAWASAN PERMUKIMAN DENGAN METODE MULTI CRITERIA EVALUATION DI KOTA PADANG
Get PDFPopulation growthis linear tothe requrement of settlement area, while the area of the earth is limited. It was caused inappropriate use of the land. This study aims to identify, analyze, and describe dynamics and suitability of land for settlements in Padang. Determination of land suitablity for settlementis using Multi Criteria Evaluation (MCE) method. The indicators used in determining the suitability of land for settlement is the slope, the frequency of flooding, drainage, distrubusi gravel, rock distribution and effective depth. Weighting in the analysis of land suitability based on the opinions of experts from various fields related to as many as 15 experts. Analysis result for land suitability of settlements in the area show that: there were 12.543 ha (18%) very suitable for settlement; 52.390 ha (75,4%) were suitable for settletment; 4.279 ha (6,2%).were compatible with marginal for settlement; and 285 ha (0,8%) were unsuitable for settlement. The area is very suitable for residential areas is very limited, so expect optimal utilization