Jurnal Alami : Jurnal Teknologi Reduksi Risiko Bencana最新文献

{"title":"ANALYSIS OF VEGETATION STRUCTURE AND COMPOSITION IN KARU LAKE CATCHMENT AREA, OBI ISLAND, SOUTH HALMAHERA DISTRICT, NORTH MALUKU PROVINCE","authors":"N. Sudiana, Akhmadi Puguh Raharjo","doi":"10.29122/ALAMI.V2I2.3032","DOIUrl":"https://doi.org/10.29122/ALAMI.V2I2.3032","url":null,"abstract":"Obi Island possess substantial natural resource potential in the form of nickel ore. Since 2014, exports of raw mineral resources have been banned and the government obligate the construction of smelters. The amount of energy and water needed for smelter requires careful planning in relation to the potential water resource available in proximity to smelter construction site, which in this case is Lake Karu. The purpose of this study was to determine the condition of the structure and composition of vegetation in the catchment area of Lake Karu. Data collected were diameter at breast height (dbh) and height of vegetation from each growth state (seedlings, saplings, poles and trees). Sampling method used for vegetation data collection were in the form of a plot in a transect. The measurement results obtained from field surveys were then analyzed to obtain the Important Value Index (IVI) of each type of vegetation and Shannon-Wiener diversity index. From this study it is known that there are three classes of lowland forest in the study location. When sorted from the most diverse to the most uniform, the sequence is: heterogeneous lowland forests, forests in river corridors and homogeneous lowland forests. Forest conditions in the study sites are in good condition and further research is needed to add more depth to this study.","PeriodicalId":270402,"journal":{"name":"Jurnal Alami : Jurnal Teknologi Reduksi Risiko Bencana","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133612679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"KAJIAN PETA BAHAYA TANAH LONGSOR DI KABUPATEN BANGGAI LAUT, PROVINSI SULAWESI TENGAH (STUDY OF LANDSLIDE HAZARD MAP IN THE BANGGAI LAUT DISTRICT, CENTRAL SULAWESI PROVINCE)","authors":"H. S. Naryanto","doi":"10.29122/ALAMI.V2I1.2695","DOIUrl":"https://doi.org/10.29122/ALAMI.V2I1.2695","url":null,"abstract":"ABSTRACTBanggai Laut District which consists of islands has many threats to natural disaster, one of them is landslide hazard. The landslides hazard in Banggai Laut District is formed due to morphology which mostly in the form of wavy morphology up to the hills. The thematic map data used in landslide hazard map analysis is the official data held by the Banggai Laut District Government. The weighting and rating system is carried out on several parameters: geology (15%), slope (40%), land cover (25%) and rainfall (20%). Data from these parameters are overlaid with geographic information system (GIS) to obtain the classification of landslide hazard maps, ie: high landslide hazard zones, moderate landslide hazard zones and low landslide hazard zones. High landslide hazard zones are evenly spread over 4 large islands, namely Banggai Island, Bangkurung Island, Labobo Island and Bokan Kepulauan Islands. The potential for high landslide hazard will become bigger with added disturbance of human activities. To smooth the development process in integrated Banggai Laut District, landslide hazard maps and other hazard maps are very necessary. The limited availability of data and information on the disaster in Banggai Laut District, the creation of landslide hazard map is very important as one of the parts to complement the data. With the establishment of Regional Disaster Management Agency (BPBD) of Banggai Laut District, disaster risk reduction is expected to be implemented more focused, integrated, comprehensive and well coordinated with related institutions. Keywords: Landslides, Hazard Maps, Banggai Laut, Disaster Risk Reduction, Focused and Integrated Development.   ABSTRAKKabupaten Banggai Laut yang terdiri dari kepulauan mempunyai banyak ancaman terhadap bencana alam, salah satunya adalah bencana tanah longsor (gerakan tanah). Bahaya tanah longsor di Kabupaten Banggai Laut terbentuk akibat morfofologi yang sebagian besar berupa morfologi bergelombang sampai perbukitan. Data peta tematik yang digunakan dalam analisis peta bahaya tanah longsor adalah data resmi yang dimiliki oleh Pemerintah Kabupaten Banggai Laut. Sistem pembobotan dan penilaian dilakukan pada beberapa parameter yaitu: geologi (15%), lereng (40%), tutupan lahan (25%) dan curah hujan (20%). Data dari parameter-parameter tersebut dioverlay dengan sistem informasi geografi untuk mendapatkan klasifikasi peta bahaya tanah longsor, yaitu: zona bahaya tanah longsor tinggi, zona bahaya tanah longsor sedang dan zona bahaya tanah longsor rendah. Zona bahaya tanah longsor tinggi merata tersebar di 4 pulau besar, yaitu Pulau Banggai, Pulau Bangkurung, Pulau Labobo dan Bokan Kepulauan. Potensi bahaya longsor tinggi tersebut akan menjadi semakin besar dengan tambahan gangguan aktivitas manusia. Untuk kelancaran proses pembangunan secara terpadu di Kabupaten Banggai Laut, peta bahaya longsor dan peta-peta bahaya lainnya sangat diperlukan. Ketersediaan data dan informasi tentang kebencanaan yang masih ","PeriodicalId":270402,"journal":{"name":"Jurnal Alami : Jurnal Teknologi Reduksi Risiko Bencana","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126621618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}