Pub Date : 2019-02-01DOI: 10.24843/BLJE.2019.V19.I01.P04
Dody Priadi
On-farm conservation study was carried out in two villages within Bogor regency (Jampang and Cisarua). Those villages represented lowland and upland area respectively. The objective of the study was to identify the diversity of plants species at family home gardens in those areas. Data was taken from 10 home gardens in each village. Primary data was collected by direct observation to the home gardens and interview with the householders, while the secondary data obtained from literature study. Data was analyzed using D and D method. Result showed that 57 plant species were conserved on-farm at the home gardens in Jampang and 58 plant species in Cisarua village. Fruit plant was dominant species in Jampang while in Cisarua was ornamental plants.
{"title":"Konservasi Lekat Lahan Tanaman Pekarangan Di Dua Desa Kabupaten Bogor","authors":"Dody Priadi","doi":"10.24843/BLJE.2019.V19.I01.P04","DOIUrl":"https://doi.org/10.24843/BLJE.2019.V19.I01.P04","url":null,"abstract":"On-farm conservation study was carried out in two villages within Bogor regency (Jampang and Cisarua). Those villages represented lowland and upland area respectively. The objective of the study was to identify the diversity of plants species at family home gardens in those areas. Data was taken from 10 home gardens in each village. Primary data was collected by direct observation to the home gardens and interview with the householders, while the secondary data obtained from literature study. Data was analyzed using D and D method. Result showed that 57 plant species were conserved on-farm at the home gardens in Jampang and 58 plant species in Cisarua village. Fruit plant was dominant species in Jampang while in Cisarua was ornamental plants.","PeriodicalId":270221,"journal":{"name":"Bumi Lestari Journal of Environment","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124691449","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}
Pub Date : 2019-02-01DOI: 10.24843/blje.2019.v19.i01.p01
Nirmalasari Idha Wijaya, F. Yulianda
The National Park Kutai (TNK) has ± 5.227 ha mangrove forest in along coastal beach. Therefore , almost 23% of mangrove forest was degraded effect to land conversion and utilization of damaged. Mud crab (Scylla serrata) is one of the resources in mangrove ecosystem, thus can be utilized for the cultivation sylvofishery. The Utilization was an alternative livelihood for the local resident in TNK areas that was not damaged their forest necessity. The model of sylvofishery utilization mud crab prepared were 5 sub-models, such as mangrove habitat sub-model, catching Mud Crab sub-model, enlargement cultivation of mud crab sub-model, market sub-model, social sub-model. The simulation results of the dynamic model, was showed optimistic of scenario performance model to sustainable for management of mangrove forest in The TNK thus conducted with optimization approached resources in utilization of Scylla serrata. With silvofishery expected balance between utilization and conservation of mangrove ecosystems.
{"title":"Model Pengelolaan Kepiting Bakau untuk Kelestarian Habitat Mangrove di Taman Nasional Kutai Provinsi Kalimantan Timur","authors":"Nirmalasari Idha Wijaya, F. Yulianda","doi":"10.24843/blje.2019.v19.i01.p01","DOIUrl":"https://doi.org/10.24843/blje.2019.v19.i01.p01","url":null,"abstract":"The National Park Kutai (TNK) has ± 5.227 ha mangrove forest in along coastal beach. Therefore , almost 23% of mangrove forest was degraded effect to land conversion and utilization of damaged. Mud crab (Scylla serrata) is one of the resources in mangrove ecosystem, thus can be utilized for the cultivation sylvofishery. The Utilization was an alternative livelihood for the local resident in TNK areas that was not damaged their forest necessity. The model of sylvofishery utilization mud crab prepared were 5 sub-models, such as mangrove habitat sub-model, catching Mud Crab sub-model, enlargement cultivation of mud crab sub-model, market sub-model, social sub-model. The simulation results of the dynamic model, was showed optimistic of scenario performance model to sustainable for management of mangrove forest in The TNK thus conducted with optimization approached resources in utilization of Scylla serrata. With silvofishery expected balance between utilization and conservation of mangrove ecosystems.","PeriodicalId":270221,"journal":{"name":"Bumi Lestari Journal of Environment","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128783446","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}
Pub Date : 2018-08-01DOI: 10.24843/blje.2018.v18.i02.p02
Micklon Edison Nakmofa, J. N. Kallau, Adrianus Amheka
The utilization of renewable electric power plants (non-fossil) in friendly environment needs to be done by using of solar energy for electricity generation. PT. LEN Industry built solar power Plant on Oelpuah Village, Kupang Tengah Subdistrict, Kupang Regency, with a total capacity of 5 megawatts Peak, which currently operates and the biggest Solar Power Plant in Indonesian. As a result of the operation of these solar power, it can be expected to have environmental impacts. The purpose of this study was to determine the impact of Physical Chemistry like air quality, water quality and noise, inside and outside of solar power plant operation. The results showed, because of PLTS Operation, it has an impact to physical chemistry environmental quality, but the impaCT STILL below the threshold of environmental quality standards.
{"title":"Kajian Kualitas Lingkungan Fisik-Kimia Akibat Pengoperasian Pembangkit Listrik Tenaga Surya Terpusat Di Desa Oelpuah Kecamatan Kupang Tengah Kabupaten Kupang","authors":"Micklon Edison Nakmofa, J. N. Kallau, Adrianus Amheka","doi":"10.24843/blje.2018.v18.i02.p02","DOIUrl":"https://doi.org/10.24843/blje.2018.v18.i02.p02","url":null,"abstract":"The utilization of renewable electric power plants (non-fossil) in friendly environment needs to be done by using of solar energy for electricity generation. PT. LEN Industry built solar power Plant on Oelpuah Village, Kupang Tengah Subdistrict, Kupang Regency, with a total capacity of 5 megawatts Peak, which currently operates and the biggest Solar Power Plant in Indonesian. As a result of the operation of these solar power, it can be expected to have environmental impacts. The purpose of this study was to determine the impact of Physical Chemistry like air quality, water quality and noise, inside and outside of solar power plant operation. The results showed, because of PLTS Operation, it has an impact to physical chemistry environmental quality, but the impaCT STILL below the threshold of environmental quality standards.","PeriodicalId":270221,"journal":{"name":"Bumi Lestari Journal of Environment","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133033255","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}
Pub Date : 2018-08-01DOI: 10.24843/BLJE.2018.V18.I02.P05
Pasca Eka Prasetya
Water Treatment Plant (WTP) IPB process water from Ciapus River by water purifying process before distributed to consumers. The type of coagulant used is Al2(SO4)3 (aluminum sulfate) or alum and Polyaluminium Chloride (PAC). This study aimed to compare the water quality by using coagulant Al2(SO4)3 and PAC in WTP Ciapus River IPB Dramaga and to find out the optimum dosage of coagulant alum and PAC . This study used a test jar method and ISO (SNI) for the analysis of physical and chemical parameters of water. Based on the results of research, PAC was better than alum with the optimum dose of 20 ppm which produces 0.22 NTU of turbidity, 1 mg/l of TSS and 150 mg/l of TDS. While the optimum dose of alum was 20 ppm which generates 0.49 NTU of turbidity, 0 mg/l of TSS and 164 mg/l of TDS. Average costs for the use of coagulant alum and PAC were Rp. 95/m3 and Rp 215/m3, while the average value of the efficient used of coagulant alum and PAC were 91.34% and 83%. The results of both coagulants meets the criteria of water quality standards in accordance with Regulation of the Minister of Health No. 429 of 2010.
水处理厂(WTP) IPB对来自恰普斯河的水进行净水处理，然后再分配给消费者。使用的混凝剂类型是Al2(SO4)3(硫酸铝)或明矾和聚合氯化铝(PAC)。本研究旨在对Ciapus River IPB Dramaga WTP中使用混凝剂Al2(SO4)3和PAC的水质进行比较，找出混凝剂明矾和PAC的最佳投加量。本研究采用试瓶法和ISO (SNI)法对水的理化参数进行了分析。研究结果表明，PAC效果优于明矾，最佳投加量为20 ppm，浊度为0.22 NTU, TSS为1 mg/l, TDS为150 mg/l。明矾的最佳投加量为20 ppm，浊度为0.49 NTU, TSS为0 mg/l, TDS为164 mg/l。混凝剂明矾和PAC的平均使用成本分别为0.95 Rp /m3和215 Rp /m3，混凝剂明矾和PAC的平均有效利用率分别为91.34%和83%。两种混凝剂的检测结果均符合卫生部2010年第429号条例规定的水质标准。
{"title":"Perbandingan Kebutuhan Koagulan Al2(So4)3 dan PAC Untuk Pengolahan Air Bersih Di WTP Sungai Ciapus Kampus IPB Dramaga","authors":"Pasca Eka Prasetya","doi":"10.24843/BLJE.2018.V18.I02.P05","DOIUrl":"https://doi.org/10.24843/BLJE.2018.V18.I02.P05","url":null,"abstract":"Water Treatment Plant (WTP) IPB process water from Ciapus River by water purifying process before distributed to consumers. The type of coagulant used is Al2(SO4)3 (aluminum sulfate) or alum and Polyaluminium Chloride (PAC). This study aimed to compare the water quality by using coagulant Al2(SO4)3 and PAC in WTP Ciapus River IPB Dramaga and to find out the optimum dosage of coagulant alum and PAC . This study used a test jar method and ISO (SNI) for the analysis of physical and chemical parameters of water. Based on the results of research, PAC was better than alum with the optimum dose of 20 ppm which produces 0.22 NTU of turbidity, 1 mg/l of TSS and 150 mg/l of TDS. While the optimum dose of alum was 20 ppm which generates 0.49 NTU of turbidity, 0 mg/l of TSS and 164 mg/l of TDS. Average costs for the use of coagulant alum and PAC were Rp. 95/m3 and Rp 215/m3, while the average value of the efficient used of coagulant alum and PAC were 91.34% and 83%. The results of both coagulants meets the criteria of water quality standards in accordance with Regulation of the Minister of Health No. 429 of 2010.","PeriodicalId":270221,"journal":{"name":"Bumi Lestari Journal of Environment","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133443746","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}
Pub Date : 1900-01-01DOI: 10.24843/blje.2021.v21.i01.p03
Muhammad Yaris Ahyadi, Abimanyu Putra Syarifudin, Alesha Zahira Khairunnisa, Joana Dacosta Ximenes, Muhammad Hilal Hamdi
One form of marine pollution is an oil spill that can come from the fault of tanker activity while operating.An example of the case is the incident of oil spill in Balikpapan Bay due to the leak of pertamina's oil pipeline in 2018, 5 thousand liters of oil spilled and polluted the sea with an area of more than 12 thousand hectares.Using normative juridical methods, researchers will conduct an analysis of the impact of the oil spill in Balikpapan Bay on the lives of the surrounding community based on legal and environmental perspectives.The purpose of the author by making this paper is to know how the process of tackling and impacting oil spills so far for the surrounding community based on the law and the environment, can also be an input for the government to be able to resolve the case of oil spill in balikpapan bay that has lasted about 3 years, so that the lives of local people can run smoothly as before the oil spill incident.
{"title":"Analisis Dampak Oil Spill Di Teluk Balikpapan Terhadap Kehidupan Masyarakat Dalam Perspektif Hukum Dan Lingkungan","authors":"Muhammad Yaris Ahyadi, Abimanyu Putra Syarifudin, Alesha Zahira Khairunnisa, Joana Dacosta Ximenes, Muhammad Hilal Hamdi","doi":"10.24843/blje.2021.v21.i01.p03","DOIUrl":"https://doi.org/10.24843/blje.2021.v21.i01.p03","url":null,"abstract":"One form of marine pollution is an oil spill that can come from the fault of tanker activity while operating.An example of the case is the incident of oil spill in Balikpapan Bay due to the leak of pertamina's oil pipeline in 2018, 5 thousand liters of oil spilled and polluted the sea with an area of more than 12 thousand hectares.Using normative juridical methods, researchers will conduct an analysis of the impact of the oil spill in Balikpapan Bay on the lives of the surrounding community based on legal and environmental perspectives.The purpose of the author by making this paper is to know how the process of tackling and impacting oil spills so far for the surrounding community based on the law and the environment, can also be an input for the government to be able to resolve the case of oil spill in balikpapan bay that has lasted about 3 years, so that the lives of local people can run smoothly as before the oil spill incident.","PeriodicalId":270221,"journal":{"name":"Bumi Lestari Journal of Environment","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126779172","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}
Pub Date : 1900-01-01DOI: 10.24843/blje.2021.v21.i01.p04
Shinta Maharani
The island of Bali as one of the tourism centers in Indonesia has felt the huge impact of Covid 19. The economy of Bali, which relies on tourism with natural and cultural beauty, has experienced a very drastic decline. Data shows that the number of foreign tourists to Bali in January 2021 has decreased as deep as 93.33%, compared to the record in December 2020 and when compared to January 2020, the number of foreign tourists to Bali was recorded to have decreased by almost 100%, namely -99.998% (BPS, 2021). This paper aims to determine the impact of Covid 19 on the economy of Bali, which relies on environmental and cultural sustainability-based tourism as a tourist attraction. This paper uses a literature review analysis related to the economic and environmental impacts in Bali caused by the Covid-19 pandemic. The impact of the Covid 19 pandemic on the economy of Bali which relies on environmental and cultural sustainability-based tourism as a tourist attraction is enormous. The economic downturn and the increase in the volume of Hazardous waste due to the pandemic are real problems to be faced, although environmental restoration will greatly benefit Bali's future sustainability
{"title":"Dampak Covid 19 Terhadap Ekonomi dan Lingkungan di Bali","authors":"Shinta Maharani","doi":"10.24843/blje.2021.v21.i01.p04","DOIUrl":"https://doi.org/10.24843/blje.2021.v21.i01.p04","url":null,"abstract":"The island of Bali as one of the tourism centers in Indonesia has felt the huge impact of Covid 19. The economy of Bali, which relies on tourism with natural and cultural beauty, has experienced a very drastic decline. Data shows that the number of foreign tourists to Bali in January 2021 has decreased as deep as 93.33%, compared to the record in December 2020 and when compared to January 2020, the number of foreign tourists to Bali was recorded to have decreased by almost 100%, namely -99.998% (BPS, 2021). This paper aims to determine the impact of Covid 19 on the economy of Bali, which relies on environmental and cultural sustainability-based tourism as a tourist attraction. This paper uses a literature review analysis related to the economic and environmental impacts in Bali caused by the Covid-19 pandemic. The impact of the Covid 19 pandemic on the economy of Bali which relies on environmental and cultural sustainability-based tourism as a tourist attraction is enormous. The economic downturn and the increase in the volume of Hazardous waste due to the pandemic are real problems to be faced, although environmental restoration will greatly benefit Bali's future sustainability","PeriodicalId":270221,"journal":{"name":"Bumi Lestari Journal of Environment","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124119794","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}
Pub Date : 1900-01-01DOI: 10.24843/blje.2021.v21.i01.p01
Jusuf Manilapai, Fredrik L. Benu, Agus A. Nalle
Global awareness towards climate change has been a serious concern for archipelago countries due to water shortage. This problem even causes more serious life-threating phenomenon because water is one of the main resources for energy circulation. Whether change anomalies have brought about impacts on seasonal shift on several islands of Indonesia, including those in East Nusa Tenggara province. These islands experience drought. Fresh water availability for industry and domestic use in cities like Kupang has been a serious problem. This issue becomes worse in recent years due to significant increase of city population. Public responsibility to maintain natural environment and resources is therefore required. This study tries to investigate public concerns over the water shortage issue in order (1) to know to what extent public is willing to pay their consumption of fresh water provided through Sub-DAS Kali Dendeng; and (2) to analyze factors that influence the willingness of the fresh water consumers to pay for environment services provided at Sub-DAS Kali Dendeng. Quantitative approach which relies on primary and secondary data gathered through interview and field observation is applied in this study. The data were analyzed by using Dichotomous Choice CVM, Turnbull Method, and Logistic Regression to find out WTP value. The results of this analysis are described within the environmental science perspective to find out the relationship among various factors for being water consumer responsibility towards water resources preservation at Sub-DAS Kali Dendeng in Kupang. The results of the analysis show that the willingness to pay for fresh water by consumer at Kelurahan Manutapen, Mantasi dan Airmata is significantly high. They are willing to pay between Rp. 3.362 to Rp.11.328 according to WTP calculation. This amount is much higher than that determined by the city freshwater supplier company (PDAM). The facts for the reason why the consumers are willing to pay for higher amount for fresh water supply are determined by several factors; they include bidding value, consumer’s level of education, consumer’s income, water quality, and the amount of the family members. These factors simultaneously influence the water consumer willingness to pay for the water they consume; and this willingness factor has significantly high impacts as seen in Negelkerke R. Square value at 0,600, or being comparable to 60%; meaning that various factors of 60% in Y are able to explain all free variable in X. Respondents for this study are those who use fresh water supplied from Sub-DAS Kali Dendeng, and those who reside around the Sub-DAS Kali Dendeng. It is believed that there must be more citizens around the Sub-DAS Kali Dendeng, who also contribute negative impact toward the ecological environmental change, yet these individuals have no direct responsibility, and therefore the responsibility for the environmental conservation examined trough this study might not be thorough
由于水资源短缺，全球对气候变化的认识一直是群岛国家严重关注的问题。由于水是能量循环的主要资源之一，这一问题甚至会造成更严重的危及生命的现象。异常变化是否对包括东努沙登加拉省在内的印度尼西亚几个岛屿的季节变化产生影响。这些岛屿经历干旱。在古邦等城市，工业和家庭使用的淡水供应一直是一个严重的问题。近年来，由于城市人口的显著增加，这个问题变得更加严重。因此，维护自然环境和资源的公共责任是必要的。本研究试图调查公众对水资源短缺问题的关注，以便:(1)了解公众愿意在多大程度上支付通过subdas Kali denteng提供的淡水;(2)分析影响淡水消费者对Sub-DAS Kali denteng提供的环境服务付费意愿的因素。定量方法依赖于通过访谈和实地观察收集的一手和二手数据。采用二分类选择CVM法、特恩布尔法和Logistic回归法对数据进行分析，求出WTP值。从环境科学的角度对分析结果进行描述，以找出库邦subdas Kali Dendeng的水资源保护用水消费者责任各因素之间的关系。分析结果表明，在克鲁拉汗马努塔蓬，曼塔西丹艾尔玛塔，消费者购买淡水的意愿非常高。根据WTP计算，他们愿意支付3.362卢比到11.328卢比之间的费用。这一数值远远高于城市淡水供应公司(PDAM)所确定的数值。消费者愿意为淡水供应支付更高费用的事实是由几个因素决定的;它们包括出价、消费者的教育水平、消费者的收入、水质和家庭成员的数量。这些因素同时影响着水消费者为其消费的水付费的意愿;在Negelkerke r中，该意愿因子具有显著的高影响，平方值为0,600，或与60%相当;这意味着Y中60%的各种因素能够解释x中的所有自由变量。本研究的受访者是使用Sub-DAS Kali Dendeng供应的淡水的人，以及居住在Sub-DAS Kali Dendeng周围的人。我们认为，在亚达斯卡利登附近肯定有更多的公民也对生态环境变化产生负面影响，但这些个人没有直接责任，因此本研究所考察的环境保护责任可能无法通过他们支付的WTP金额来彻底衡量。
{"title":"Willingness To Pay Konsumen Pengguna Air Di Sub-Das Kali Dendeng – Kota Kupang","authors":"Jusuf Manilapai, Fredrik L. Benu, Agus A. Nalle","doi":"10.24843/blje.2021.v21.i01.p01","DOIUrl":"https://doi.org/10.24843/blje.2021.v21.i01.p01","url":null,"abstract":"Global awareness towards climate change has been a serious concern for archipelago countries due to water shortage. This problem even causes more serious life-threating phenomenon because water is one of the main resources for energy circulation. Whether change anomalies have brought about impacts on seasonal shift on several islands of Indonesia, including those in East Nusa Tenggara province. These islands experience drought. Fresh water availability for industry and domestic use in cities like Kupang has been a serious problem. This issue becomes worse in recent years due to significant increase of city population. Public responsibility to maintain natural environment and resources is therefore required. This study tries to investigate public concerns over the water shortage issue in order (1) to know to what extent public is willing to pay their consumption of fresh water provided through Sub-DAS Kali Dendeng; and (2) to analyze factors that influence the willingness of the fresh water consumers to pay for environment services provided at Sub-DAS Kali Dendeng. Quantitative approach which relies on primary and secondary data gathered through interview and field observation is applied in this study. The data were analyzed by using Dichotomous Choice CVM, Turnbull Method, and Logistic Regression to find out WTP value. The results of this analysis are described within the environmental science perspective to find out the relationship among various factors for being water consumer responsibility towards water resources preservation at Sub-DAS Kali Dendeng in Kupang. The results of the analysis show that the willingness to pay for fresh water by consumer at Kelurahan Manutapen, Mantasi dan Airmata is significantly high. They are willing to pay between Rp. 3.362 to Rp.11.328 according to WTP calculation. This amount is much higher than that determined by the city freshwater supplier company (PDAM). The facts for the reason why the consumers are willing to pay for higher amount for fresh water supply are determined by several factors; they include bidding value, consumer’s level of education, consumer’s income, water quality, and the amount of the family members. These factors simultaneously influence the water consumer willingness to pay for the water they consume; and this willingness factor has significantly high impacts as seen in Negelkerke R. Square value at 0,600, or being comparable to 60%; meaning that various factors of 60% in Y are able to explain all free variable in X. Respondents for this study are those who use fresh water supplied from Sub-DAS Kali Dendeng, and those who reside around the Sub-DAS Kali Dendeng. It is believed that there must be more citizens around the Sub-DAS Kali Dendeng, who also contribute negative impact toward the ecological environmental change, yet these individuals have no direct responsibility, and therefore the responsibility for the environmental conservation examined trough this study might not be thorough","PeriodicalId":270221,"journal":{"name":"Bumi Lestari Journal of Environment","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124581967","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}
Pub Date : 1900-01-01DOI: 10.24843/blje.2021.v21.i02.p05
I. M. Antara, Ricardo Marquez, T. Osawa
Landslides are significant geo-hazards heavily impacting many regions of the world regarding human lives and economic losses. The large magnitude of natural forces involved in landslides makes actions of mitigation or prevention unfeasible, with exceptions for minor occurrences or under special conditions. Many old methods have been applied in landslide management and/or prediction, such as overlays or weighting methods. The newest/advanced methods are still being developed and one of the newest methods is Artificial Neural Network (ANN). ANN are biologically inspired computer programs designed to simulate how the human brain processes information. Many types of ANN exist; the most famous one is Multilayer Perceptron (MLP) Neural Network Algorithm with FeedForward model. MLP consists of three parts: the input layers as neurons representing the value of data; the hidden layer, which demonstrates the network training process; and the output layer, which provides the prediction of the landslide areas. In this research, the input layer consists of landslide location characteristics, such as the rainfall intensity, land cover, slope, geological types, and rate displacement of landslides. As a case study, Bangli Regency was selected. In 2017 there was a landslide disaster in the Kintamani District, Bangli Regency, which resulted in dozens of people missing or dead, and several houses destroyed. In this study different numbers of neurons were used in the hidden layer (15, 50, 100, and 150 neurons). The best performance is obtained at 150 neurons, with 0.9677 (96,77%) for the test set.
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