Pub Date : 2022-10-01DOI: 10.20886/jppdas.2022.6.2.199-220
Sunarti Sunarti, Diah Listyarini, Agus Kurniawan
Watershed degradation is one of the environmental problems in many parts of Indonesia. The main environmental problem in the watershed is land-use that does not consider soil and water conservation principles. Irresponsible land use will affect the hydrological function of an area. An impaired hydrological function is one indicator of watershed damage. The aim of the study was to identify and evaluate the biophysical conditions, watershed morphometry, and its relationship with the hydrological condition of the Kenali Besar watershed. The Kenali Besar watershed covers the area of Jambi City and Muaro Jambi Regency. The research was carried out in 2020 using a survey method and the research data were analyzed descriptively. The results showed that the Kenali Besar watershed has an elongated shape with medium drainage density. The watershed morphometry shows that the Kenali Besar has a relatively fast time to peak and decline in flow as well. The analysis shows that the Kenali Besar watershed has a flood risk because the land use is dominated by residential areas (40.69%), which has a relatively low capacity and infiltration rate. The ratio of instantaneous flow rates in the middle and downstream reaches 54.10 m3/s and 57.67 m3/s, respectively
{"title":"HUBUNGAN KERAGAAN BIOFISIK DAN MORFOMETRI DAERAH ALIRAN SUNGAI (DAS) KENALI BESAR, PROVINSI JAMBI DENGAN KONDISI HIDROLOGINYA (The Relationship between The Biophysical and Morphometry of The Kenali Besar Watershed, Jambi Province with Its Hydrological Conditions","authors":"Sunarti Sunarti, Diah Listyarini, Agus Kurniawan","doi":"10.20886/jppdas.2022.6.2.199-220","DOIUrl":"https://doi.org/10.20886/jppdas.2022.6.2.199-220","url":null,"abstract":"Watershed degradation is one of the environmental problems in many parts of Indonesia. The main environmental problem in the watershed is land-use that does not consider soil and water conservation principles. Irresponsible land use will affect the hydrological function of an area. An impaired hydrological function is one indicator of watershed damage. The aim of the study was to identify and evaluate the biophysical conditions, watershed morphometry, and its relationship with the hydrological condition of the Kenali Besar watershed. The Kenali Besar watershed covers the area of Jambi City and Muaro Jambi Regency. The research was carried out in 2020 using a survey method and the research data were analyzed descriptively. The results showed that the Kenali Besar watershed has an elongated shape with medium drainage density. The watershed morphometry shows that the Kenali Besar has a relatively fast time to peak and decline in flow as well. The analysis shows that the Kenali Besar watershed has a flood risk because the land use is dominated by residential areas (40.69%), which has a relatively low capacity and infiltration rate. The ratio of instantaneous flow rates in the middle and downstream reaches 54.10 m3/s and 57.67 m3/s, respectively","PeriodicalId":187244,"journal":{"name":"Jurnal Penelitian Pengelolaan Daerah Aliran Sungai","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124968153","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 : 2022-04-01DOI: 10.20886/jppdas.2022.6.1.77-86
Putra Jupiardi, Y. Hidayat, Latief Rachman
Lake Kerinci is one of the 15 national priority lakes. In general, residents in this area carry out agricultural or plantation activities without applying conservation principles, resulting in a decrease in the carrying capacity of the Catchment Area (DTA). In addition, DTA Lake Kerinci has also experienced an increase in population, thus encouraging land-use changes. This study aims to analyze land-use changes in DTA Lake Kerinci. Analysis of land-use change analysis uses Landsat imagery 5 TM for 2009 and Landsat imagery 8 OLI-TIRS for 2019 using the guided classification method (Maximum Likelihood Classification/MLC). The accuracy of the image interpretation results is carried out through the Kappa accuracy test. Interpretation of land-use imagery and classification have relatively high accuracy with a kappa value of 78.67% (good) on land use in 2009, 83.30% (almost perfect) on land use in 2019, with an average Kappa Accuracy (KA) of 79.63%. Land-use changes in Lake Kerinci DTA for the 2009-2019 period experienced a significant increase in the area of dry agricultural land by 13% or 13,151.05 ha and a decrease in primary forest area by 6.76% or 6,834.13 ha.
{"title":"ANALISIS PERUBAHAN PENGGUNAAN LAHAN DAERAH TANGKAPAN AIR DANAU KERINCI (Land Use Change Analysis in The Kerinci Lake Catchment Area)","authors":"Putra Jupiardi, Y. Hidayat, Latief Rachman","doi":"10.20886/jppdas.2022.6.1.77-86","DOIUrl":"https://doi.org/10.20886/jppdas.2022.6.1.77-86","url":null,"abstract":"Lake Kerinci is one of the 15 national priority lakes. In general, residents in this area carry out agricultural or plantation activities without applying conservation principles, resulting in a decrease in the carrying capacity of the Catchment Area (DTA). In addition, DTA Lake Kerinci has also experienced an increase in population, thus encouraging land-use changes. This study aims to analyze land-use changes in DTA Lake Kerinci. Analysis of land-use change analysis uses Landsat imagery 5 TM for 2009 and Landsat imagery 8 OLI-TIRS for 2019 using the guided classification method (Maximum Likelihood Classification/MLC). The accuracy of the image interpretation results is carried out through the Kappa accuracy test. Interpretation of land-use imagery and classification have relatively high accuracy with a kappa value of 78.67% (good) on land use in 2009, 83.30% (almost perfect) on land use in 2019, with an average Kappa Accuracy (KA) of 79.63%. Land-use changes in Lake Kerinci DTA for the 2009-2019 period experienced a significant increase in the area of dry agricultural land by 13% or 13,151.05 ha and a decrease in primary forest area by 6.76% or 6,834.13 ha.","PeriodicalId":187244,"journal":{"name":"Jurnal Penelitian Pengelolaan Daerah Aliran Sungai","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132510513","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 : 2022-04-01DOI: 10.20886/jppdas.2022.6.1.1-20
Erik Febriarta, Ajeng Larasati, D. Wacano, I. Suherningtyas
Landslide, one of the physical environmental disasters, can be defined as the movement of rock mass, soil, or shredded material that forms a slope down the slope Kulon Progo Regency has always been a landslide-prone area that most often occurs in the Special Region of Yogyakarta in the last three years. One way to reduce the risk of hazards is by mapping the hazard assessment of mass movement disasters. The purpose of this study is to determine the zone of vulnerability to landslides in the Serang watershed, Kulon Progo. The method used is heuristic, where the assessment of the potential for ground motion is based on a geomorphological approach with a weighting analysis of each parameter. The parameters used are slope, rock type, geological structure (distance to fault), land use, and landslide event distribution. Each parameter is assigned a value and a weight variable based on the factors that most influence slope safety. They are then calculated in a linear variable manner, resulting in an index value for soil movement vulnerability. The index value is grouped spatially into four (4) hazards with equal interval class division, very low hazard with an area of 95.93 km2 (46%); low hazard with an area of 72.02 km2 (34%); moderate hazard with an area of 38.56 km2 (18%); and very high hazard with an area of 1.96 km2 (0.01%). Based on the spatial analysis, the distribution of the existing landslide events are increasing correlatively with the higher the hazard zone.
滑坡是自然环境灾害的一种，可以定义为岩石、土壤或破碎物质的运动，形成斜坡的斜坡。Kulon Progo Regency一直是一个滑坡易发区，在过去的三年里，日惹特区最常发生滑坡。减少灾害风险的一种方法是绘制大规模运动灾害的危害评估图。本研究的目的是确定Kulon Progo的Serang流域的滑坡易损区。所使用的方法是启发式的，其中对地面运动潜力的评估是基于地貌学方法，并对每个参数进行加权分析。使用的参数有坡度、岩石类型、地质构造(到断层的距离)、土地利用、滑坡事件分布。根据对边坡安全影响最大的因素，为每个参数赋值和权重变量。然后以线性变量的方式计算它们，从而得到土壤运动脆弱性的指标值。指数值在空间上分为4个等间隔等级划分的危害，极低危害，面积为95.93 km2 (46%);危险性低，面积为72.02 km2 (34%);中度危害，面积38.56平方公里(18%);危险性极高，面积为1.96 km2(0.01%)。空间分析表明，随着灾害带的升高，滑坡事件的分布呈增加趋势。
{"title":"PENENTUAN ZONA KERAWANAN GERAKAN TANAH DENGAN METODE HEURISTIK DAS SERANG KABUPATEN KULON PROGO (Determination of mass movement vulnerability zone using heuristic methods in Serang watershed Kulon Progo District)","authors":"Erik Febriarta, Ajeng Larasati, D. Wacano, I. Suherningtyas","doi":"10.20886/jppdas.2022.6.1.1-20","DOIUrl":"https://doi.org/10.20886/jppdas.2022.6.1.1-20","url":null,"abstract":"Landslide, one of the physical environmental disasters, can be defined as the movement of rock mass, soil, or shredded material that forms a slope down the slope Kulon Progo Regency has always been a landslide-prone area that most often occurs in the Special Region of Yogyakarta in the last three years. One way to reduce the risk of hazards is by mapping the hazard assessment of mass movement disasters. The purpose of this study is to determine the zone of vulnerability to landslides in the Serang watershed, Kulon Progo. The method used is heuristic, where the assessment of the potential for ground motion is based on a geomorphological approach with a weighting analysis of each parameter. The parameters used are slope, rock type, geological structure (distance to fault), land use, and landslide event distribution. Each parameter is assigned a value and a weight variable based on the factors that most influence slope safety. They are then calculated in a linear variable manner, resulting in an index value for soil movement vulnerability. The index value is grouped spatially into four (4) hazards with equal interval class division, very low hazard with an area of 95.93 km2 (46%); low hazard with an area of 72.02 km2 (34%); moderate hazard with an area of 38.56 km2 (18%); and very high hazard with an area of 1.96 km2 (0.01%). Based on the spatial analysis, the distribution of the existing landslide events are increasing correlatively with the higher the hazard zone.","PeriodicalId":187244,"journal":{"name":"Jurnal Penelitian Pengelolaan Daerah Aliran Sungai","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127708170","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 : 2022-04-01DOI: 10.20886/jppdas.2022.6.1.21-38
Endang Savitri, R. Adi, P. Putra, Y. Indrajaya
The flood disaster in northern Central Java was caused by rainfall, the influence of tidal surges, and ground subsidence in various sites. This study aims to give alternative solutions to flood control in Central Java watersheds draining to the north coast. By identifying the flood water discharge areas, the amount of runoff causing flooding can be reduced. By overlaying maps of floodwater discharge, land cover, degraded land, and forest functions, 12 recommendations of forests and land rehabilitation (RHL) are obtained, suited to the area's concerns. The recommendations are planned only for the areas with vulnerable and highly vulnerable to floodwater discharge, so priority is given to activities that incorporate runoff into the ground as much as possible to reduce the flood volume. The RHL is grouped into the enrichment of plants in open areas with the function of forest areas, enhancing terraces to reduce erosion, increasing soil fertility, and constructing infiltration wells or bio pores. Of the 31 regencies/cities whose rivers flow into the north coast, there are 5 (five) regencies/cities whose RHL recommendations are applied to more than 50% of the area, namely Salatiga City (99%), Semarang district/city (76%), Jepara Regency (71%), Pekalongan Regency (55%), and Brebes Regency (51%).
{"title":"WATERSHED MANAGEMENT APPROACH AS AN ALTERNATIVE SOLUTION FOR FLOOD PROBLEM IN NORTHERN PART OF CENTRAL JAVA (Pendekatan Pengelolaan DAS Sebagai Alternatif Solusi Masalah Banjir di Jawa Tengah Utara)","authors":"Endang Savitri, R. Adi, P. Putra, Y. Indrajaya","doi":"10.20886/jppdas.2022.6.1.21-38","DOIUrl":"https://doi.org/10.20886/jppdas.2022.6.1.21-38","url":null,"abstract":"The flood disaster in northern Central Java was caused by rainfall, the influence of tidal surges, and ground subsidence in various sites. This study aims to give alternative solutions to flood control in Central Java watersheds draining to the north coast. By identifying the flood water discharge areas, the amount of runoff causing flooding can be reduced. By overlaying maps of floodwater discharge, land cover, degraded land, and forest functions, 12 recommendations of forests and land rehabilitation (RHL) are obtained, suited to the area's concerns. The recommendations are planned only for the areas with vulnerable and highly vulnerable to floodwater discharge, so priority is given to activities that incorporate runoff into the ground as much as possible to reduce the flood volume. The RHL is grouped into the enrichment of plants in open areas with the function of forest areas, enhancing terraces to reduce erosion, increasing soil fertility, and constructing infiltration wells or bio pores. Of the 31 regencies/cities whose rivers flow into the north coast, there are 5 (five) regencies/cities whose RHL recommendations are applied to more than 50% of the area, namely Salatiga City (99%), Semarang district/city (76%), Jepara Regency (71%), Pekalongan Regency (55%), and Brebes Regency (51%).","PeriodicalId":187244,"journal":{"name":"Jurnal Penelitian Pengelolaan Daerah Aliran Sungai","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131580817","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 : 2022-04-01DOI: 10.20886/jppdas.2022.6.1.39-56
F. Dhiniati, Alharia Dinata
The high rainfall for a long time resulted in flash floods that hit three villages in Lahat Regency, submerged dozens of residents' houses, damaged several public facilities, and cut off-road access. From this incident, spatial information is needed related to areas prone to flash floods so that the negative impacts can be minimized. This study aims to identify the vulnerability of flash floods in the Air Mulak Watershed. This research uses the AHP (Analytical Hierarchy Process) method for rational decision-making of all parameters, integrated with GIS (Geographical Information System) applications. The results of the consistency test for all parameters, the CR value of 0.97% is smaller than 10% and is considered consistent. The results of scoring all parameters are then overlaid by giving weight to each parameter, and it can be seen that the distribution of flash flood susceptibility in Air Mulak Sub-Watershed with a very high percentage of 0.20%, high class of 4.75%, moderate class of 15.78%, low at 43.50%, and very low at 35.78%. The results showed that the parameters that greatly affect flash flooding in the Air Mulak Sub-Watershed are altitude, river density, slope, and distance from the river because the area is where water accumulates from upstream of the river when it rains with high intensity.
{"title":"IDENTIFIKASI KERENTANAN BANJIR BANDANG MENGGUNAKAN METODE AHP (ANALYTICAL HIERARCHY PROCESS) BERBASIS SIG DI SUB DAS AIR MULAK, KABUPATEN LAHAT (Identification of Flash Flood Vulnerability Using GIS-Based AHP (Analytical Hierarchy Process) Method in Air Mulak Sub-watershed, Lahat Regency)","authors":"F. Dhiniati, Alharia Dinata","doi":"10.20886/jppdas.2022.6.1.39-56","DOIUrl":"https://doi.org/10.20886/jppdas.2022.6.1.39-56","url":null,"abstract":"The high rainfall for a long time resulted in flash floods that hit three villages in Lahat Regency, submerged dozens of residents' houses, damaged several public facilities, and cut off-road access. From this incident, spatial information is needed related to areas prone to flash floods so that the negative impacts can be minimized. This study aims to identify the vulnerability of flash floods in the Air Mulak Watershed. This research uses the AHP (Analytical Hierarchy Process) method for rational decision-making of all parameters, integrated with GIS (Geographical Information System) applications. The results of the consistency test for all parameters, the CR value of 0.97% is smaller than 10% and is considered consistent. The results of scoring all parameters are then overlaid by giving weight to each parameter, and it can be seen that the distribution of flash flood susceptibility in Air Mulak Sub-Watershed with a very high percentage of 0.20%, high class of 4.75%, moderate class of 15.78%, low at 43.50%, and very low at 35.78%. The results showed that the parameters that greatly affect flash flooding in the Air Mulak Sub-Watershed are altitude, river density, slope, and distance from the river because the area is where water accumulates from upstream of the river when it rains with high intensity.","PeriodicalId":187244,"journal":{"name":"Jurnal Penelitian Pengelolaan Daerah Aliran Sungai","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130590570","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 : 2022-04-01DOI: 10.20886/jppdas.2022.6.1.87-110
Edy Junaidi
Plantation forest development was dominated by commercial timber-producing of tree species, coniferous and deciduous. Plantation forest development affects water yield in an area. Research on the effect of plantation forest development on water yield at the watershed scale has not been widely carried out. This study aimed to predict the environmental effect of plantation forests development three groups of commercial timber-producing groups, namely needle-leaf evergreens, broad-leaf deciduous, and broad-leaf evergreens, on water yield at the watershed scale. This research uses the SWAT (Soil and Water Assessment Tool) model to assess water yield. Plantations development of needle-leaf evergreens, broad-leaf deciduous and broad-leaf evergreens had no negative effect on water yield. Plantations development of needle-leaf evergreens, contributed maximum water from the base flow and lateral flow in a 60% forest area on a watershed area. A 40% increase in broad-leaf deciduous in the watershed contributes to an increase in water system from surface flow. The results of this study are expected to become a consideration in policy making related to the development of plantation forests at the watershed scale.
人工林的发展以商业用材、针叶和落叶树种为主。人工林的发展影响着一个地区的水量。在流域尺度上，人工林开发对水量影响的研究尚未广泛开展。本研究旨在预测人工林开发对流域尺度上针叶常绿、阔叶落叶和阔叶常绿三种商业用材类群的环境影响。本研究采用SWAT (Soil and Water Assessment Tool)模型对产水量进行评估。针叶常绿、阔叶落叶常绿和阔叶常绿的人工林发育对产量无负影响。针叶常绿人工林的发展，在流域60%的森林面积上，基流和侧流对水分的贡献最大。该流域阔叶落叶增加了40%，地表水流增加了水系。本研究结果有望成为流域人工林发展相关政策制定的参考依据。
{"title":"PENGARUH PEMBANGUNAN HUTAN TANAMAN TERHADAP TATA AIR (STUDI SIMULASI DI DAS CITANDUY HULU) (Effect of Plantation Forest Development on Water System, A Simulation study in Upper Citanduy Watershed)","authors":"Edy Junaidi","doi":"10.20886/jppdas.2022.6.1.87-110","DOIUrl":"https://doi.org/10.20886/jppdas.2022.6.1.87-110","url":null,"abstract":"Plantation forest development was dominated by commercial timber-producing of tree species, coniferous and deciduous. Plantation forest development affects water yield in an area. Research on the effect of plantation forest development on water yield at the watershed scale has not been widely carried out. This study aimed to predict the environmental effect of plantation forests development three groups of commercial timber-producing groups, namely needle-leaf evergreens, broad-leaf deciduous, and broad-leaf evergreens, on water yield at the watershed scale. This research uses the SWAT (Soil and Water Assessment Tool) model to assess water yield. Plantations development of needle-leaf evergreens, broad-leaf deciduous and broad-leaf evergreens had no negative effect on water yield. Plantations development of needle-leaf evergreens, contributed maximum water from the base flow and lateral flow in a 60% forest area on a watershed area. A 40% increase in broad-leaf deciduous in the watershed contributes to an increase in water system from surface flow. The results of this study are expected to become a consideration in policy making related to the development of plantation forests at the watershed scale.","PeriodicalId":187244,"journal":{"name":"Jurnal Penelitian Pengelolaan Daerah Aliran Sungai","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127965297","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 : 2021-10-01DOI: 10.20886/jppdas.2021.5.2.105-120
Fahriya Puspita Sari, Nissa Nurfajrin Solihat, M. Sholeh, L. Risanto, Fitria Fitria, F. Falah, Widya Fatriasari
Sungai Citarum merupakan sungai terpanjang dan terbesar di Jawa Barat, Indonesia yang mempunyai fungsi vital sebagai sumber air. Pengolahan air sungai Citarum sebelum disalurkan ke masyarakat diperlukan untuk menghilangkan pengotor karena kandungan pengotor pada air sungai Citarum melebihi batas ambang yang dipersyaratkan untuk air konsumsi. Saat ini proses penjerapan atau adsorpsi merupakan proses yang umum digunakan pada perusahaan pegolahan air karena efektifitasnya. Pada penelitian ini, efektifitas lima agen penjerap yaitu silika, andisol, hidroton, antrasit, karbon aktif telah dievaluasi dengan perbedaan rasio padatan dan larutan, dan waktu kontak. Setelah pengolahan, kekeruhan dan logam berat dalam air dianalisa. Karakteristik permukaan, gugus fungsi, dan luas permukaan dari kelima agen penjerap dianalisa masing-masing menggunakan FE-SEM (Field Emission - Scanning Electron Microscopes), FTIR (Fourier Transform Infrared Spectroscopy), dan analisa luas permukaan BET (Brunauer-Emmett-Teller). Hasil analisa menunjukan bahwa masing-masing andisol dan LECA menurunkan kekeruhan dari air citarum dari 21.3 NTU (Nephelometric Turbidity Unit) menjadi 1.23 dan 2.52 NTU setelah waktu kontak 10 menit. Karbon aktif membutuhkan waktu 10 menit lebih lama untuk menurunkan kekeruhan menjadi 2.26 NTU akan tetapi karbon aktif memiliki luas permukaan yang paling tinggi yaitu 548.310 (m2/g). Luas permukaan berkaitan dengan hasil FE-SEM dimana karbon aktif memiliki pori yang teratur dan berukuran besar. Pada umumnya, andisol, LECA, dan karbon aktif telah berhasil menurunkan kekeruhan air Sungai Citarum yang berkaitan dengan luas permukaan partikelnya.
{"title":"THE EFFECT OF ADSORBENT AGENTS: SILICA, ANDISOL, LECA, ANTHRACITE, AND ACTIVATED CARBON ON POLLUTANT UPTAKE IN THE CITARUM RIVER (Pengaruh agen penjerap silika, andisol, LECA, antrasit, dan karbon aktif terhadap penjerapan polutan di Sungai Citarum)","authors":"Fahriya Puspita Sari, Nissa Nurfajrin Solihat, M. Sholeh, L. Risanto, Fitria Fitria, F. Falah, Widya Fatriasari","doi":"10.20886/jppdas.2021.5.2.105-120","DOIUrl":"https://doi.org/10.20886/jppdas.2021.5.2.105-120","url":null,"abstract":"Sungai Citarum merupakan sungai terpanjang dan terbesar di Jawa Barat, Indonesia yang mempunyai fungsi vital sebagai sumber air. Pengolahan air sungai Citarum sebelum disalurkan ke masyarakat diperlukan untuk menghilangkan pengotor karena kandungan pengotor pada air sungai Citarum melebihi batas ambang yang dipersyaratkan untuk air konsumsi. Saat ini proses penjerapan atau adsorpsi merupakan proses yang umum digunakan pada perusahaan pegolahan air karena efektifitasnya. Pada penelitian ini, efektifitas lima agen penjerap yaitu silika, andisol, hidroton, antrasit, karbon aktif telah dievaluasi dengan perbedaan rasio padatan dan larutan, dan waktu kontak. Setelah pengolahan, kekeruhan dan logam berat dalam air dianalisa. Karakteristik permukaan, gugus fungsi, dan luas permukaan dari kelima agen penjerap dianalisa masing-masing menggunakan FE-SEM (Field Emission - Scanning Electron Microscopes), FTIR (Fourier Transform Infrared Spectroscopy), dan analisa luas permukaan BET (Brunauer-Emmett-Teller). Hasil analisa menunjukan bahwa masing-masing andisol dan LECA menurunkan kekeruhan dari air citarum dari 21.3 NTU (Nephelometric Turbidity Unit) menjadi 1.23 dan 2.52 NTU setelah waktu kontak 10 menit. Karbon aktif membutuhkan waktu 10 menit lebih lama untuk menurunkan kekeruhan menjadi 2.26 NTU akan tetapi karbon aktif memiliki luas permukaan yang paling tinggi yaitu 548.310 (m2/g). Luas permukaan berkaitan dengan hasil FE-SEM dimana karbon aktif memiliki pori yang teratur dan berukuran besar. Pada umumnya, andisol, LECA, dan karbon aktif telah berhasil menurunkan kekeruhan air Sungai Citarum yang berkaitan dengan luas permukaan partikelnya.","PeriodicalId":187244,"journal":{"name":"Jurnal Penelitian Pengelolaan Daerah Aliran Sungai","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122167918","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 : 2021-10-01DOI: 10.20886/jppdas.2021.5.2.171-184
Cut Azizah, Hidayat Pawitan, N. Nuraida, H. Satriawan, R. Abbas, Sarif Robo, Misnawati Misnawati
Daerah Aliran Sungai (DAS) mengalami peningkatan kerusakan akibat hubungan dan interferensi manusia yang berdampak pada kesetimbangan hidrologi sehingga terjadi bencana. Bencana banjir yang merupakan bencana hidrologi rutin terjadi di DAS Jambo Aye. Penelitian ini bertujuan untuk menganalisa hubungan karakteristik hidrologi DAS Jambo Aye terhadap potensi dan kejadian banjir di wilayah DAS Jambo Aye. Karakeristik kemiringan lereng, pergerakan tanah, analisis kelompok hidrologi tanah (HSG), Antecedent Precipitation Index (API) dan kurva limpasan digunakan sebagai indikator hidrologi untuk mengidentifikasi potensi banjir yang terjadi di DAS Jambo Aye. Analisis menunjukkan DAS Jambo Aye termasuk wilayah yang berpotensi mengalami banjir. Potensi banjir genangan terdapat di wilayah hilir yang mempunyai karakteristik lereng landai (12%), kapasitas infiltrasi sangat lambat (37,95%), nilai kurva limpasan tinggi (17%) dan tingkat kebasahan yang tinggi (26%). Banjir bandang berpotensi terjadi di wilayah hulu yang mempunyai karakteristik lereng curam, adanya pergerakan tanah dan curah hujan yang tinggi. Pengelolaan DAS perlu dilakukan di DAS Jambo Aye mengingat kejadian banjir yang sering terjadi.
人类的关系和干预对水文平衡造成的损害增加了。洪水是一种常规的水文灾难。本研究旨在分析水的特性与水的潜在洪水事件之间的关系。喀喀式坡度坡度，土壤运动，土壤水文分析(HSG)，先行屈水指数(API)和径流曲线被用作水文指标，以确定在Jambo Aye DAS Jambo中可能发生的洪水。分析表明，DAS Jambo Aye属于一个潜在的洪水区域。下游的坡度为12%，渗透能力非常缓慢(37.95%)，径流曲线值(17%)和高降雨率(26%)。北部地区可能发生山洪暴发，这些特点是陡坡，土壤的运动和降雨量大。鉴于洪水经常发生，DAS管理需要在Jambo Aye进行。
{"title":"KARAKTERISTIK HIDROLOGI DAN DAMPAKNYA TERHADAP BANJIR DAERAH ALIRAN SUNGAI JAMBO AYE DI ACEH INDONESIA (Hydrological Characteristics And Its Impact On Flood Jambo Aye Basin In Aceh Indonesia)","authors":"Cut Azizah, Hidayat Pawitan, N. Nuraida, H. Satriawan, R. Abbas, Sarif Robo, Misnawati Misnawati","doi":"10.20886/jppdas.2021.5.2.171-184","DOIUrl":"https://doi.org/10.20886/jppdas.2021.5.2.171-184","url":null,"abstract":"Daerah Aliran Sungai (DAS) mengalami peningkatan kerusakan akibat hubungan dan interferensi manusia yang berdampak pada kesetimbangan hidrologi sehingga terjadi bencana. Bencana banjir yang merupakan bencana hidrologi rutin terjadi di DAS Jambo Aye. Penelitian ini bertujuan untuk menganalisa hubungan karakteristik hidrologi DAS Jambo Aye terhadap potensi dan kejadian banjir di wilayah DAS Jambo Aye. Karakeristik kemiringan lereng, pergerakan tanah, analisis kelompok hidrologi tanah (HSG), Antecedent Precipitation Index (API) dan kurva limpasan digunakan sebagai indikator hidrologi untuk mengidentifikasi potensi banjir yang terjadi di DAS Jambo Aye. Analisis menunjukkan DAS Jambo Aye termasuk wilayah yang berpotensi mengalami banjir. Potensi banjir genangan terdapat di wilayah hilir yang mempunyai karakteristik lereng landai (12%), kapasitas infiltrasi sangat lambat (37,95%), nilai kurva limpasan tinggi (17%) dan tingkat kebasahan yang tinggi (26%). Banjir bandang berpotensi terjadi di wilayah hulu yang mempunyai karakteristik lereng curam, adanya pergerakan tanah dan curah hujan yang tinggi. Pengelolaan DAS perlu dilakukan di DAS Jambo Aye mengingat kejadian banjir yang sering terjadi.","PeriodicalId":187244,"journal":{"name":"Jurnal Penelitian Pengelolaan Daerah Aliran Sungai","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134118630","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 : 2021-10-01DOI: 10.20886/jppdas.2021.5.2.185-206
Yudi Armanda Syahputra, Muhammad Buce Saleh, N. Puspaningsih
Prediksi perubahan tutupan lahan yang baik akan menjadi pertimbangan dalam menentukan strategi pembangunan di masa depan. Terdapat banyak metode dalam melakukan prediksi perubahan tutupan lahan yang tergantung pada kebutuhan data, algoritma pemodelan yang dilakukan dan output apa saja yang diperlukan. Penelitian ini dilakukan untuk mengkaji model prediksi perubahan tutupan lahan dari tahun 2007 hingga 2020 di DAS Krueng Aceh. Pendekatan yang dilakukan menggunakan penginderaan jauh dan SIG. Model Markov Chain (MC) dan Artificial Neural Network-Markov (ANN-MC) digunakan untuk memahami dinamika spatio-temporal tutupan lahan. Akurasi dari citra penginderaan jauh yang diklasifikasikan diperoleh dari hasil interpretasi visual pada citra resolusi sedang Landsat OLI tahun 2020 dengan nilai Kappa Accuracy sebesar 84%. Kedua model prediksi menggunakan data tutupan lahan tahun 2007 (T1) dan 2017 (T2) untuk membuat probability perubahan yang digunakan dalam memprediksi tutupan lahan pada tahun 2020 (T3). Validasi kedua algoritma menunjukkan korelasi yang kuat dengan peta tutupan lahan 2020, hal tersebut membuktikan kehandalan model kedua simulasi (ANN=87,81% dan MC=88,69%).
{"title":"PREDIKSI PERUBAHAN TUTUPAN LAHAN DENGAN MODEL MARKOV CHAIN DAN ANN-MARKOV DI DAS KRUENG ACEH (Land cover change prediction using Markov Chain and ANN-Markov Model in Krueng Aceh Watershed)","authors":"Yudi Armanda Syahputra, Muhammad Buce Saleh, N. Puspaningsih","doi":"10.20886/jppdas.2021.5.2.185-206","DOIUrl":"https://doi.org/10.20886/jppdas.2021.5.2.185-206","url":null,"abstract":"Prediksi perubahan tutupan lahan yang baik akan menjadi pertimbangan dalam menentukan strategi pembangunan di masa depan. Terdapat banyak metode dalam melakukan prediksi perubahan tutupan lahan yang tergantung pada kebutuhan data, algoritma pemodelan yang dilakukan dan output apa saja yang diperlukan. Penelitian ini dilakukan untuk mengkaji model prediksi perubahan tutupan lahan dari tahun 2007 hingga 2020 di DAS Krueng Aceh. Pendekatan yang dilakukan menggunakan penginderaan jauh dan SIG. Model Markov Chain (MC) dan Artificial Neural Network-Markov (ANN-MC) digunakan untuk memahami dinamika spatio-temporal tutupan lahan. Akurasi dari citra penginderaan jauh yang diklasifikasikan diperoleh dari hasil interpretasi visual pada citra resolusi sedang Landsat OLI tahun 2020 dengan nilai Kappa Accuracy sebesar 84%. Kedua model prediksi menggunakan data tutupan lahan tahun 2007 (T1) dan 2017 (T2) untuk membuat probability perubahan yang digunakan dalam memprediksi tutupan lahan pada tahun 2020 (T3). Validasi kedua algoritma menunjukkan korelasi yang kuat dengan peta tutupan lahan 2020, hal tersebut membuktikan kehandalan model kedua simulasi (ANN=87,81% dan MC=88,69%).","PeriodicalId":187244,"journal":{"name":"Jurnal Penelitian Pengelolaan Daerah Aliran Sungai","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114506917","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 : 2021-06-11DOI: 10.20886/JPPDAS.2021.5.1.21-40
Djati Mardiatno, F. Faridah, S. Sunarno, Dwi Wahyu Arifudiin Najib, Y. Widyaningsih, M. Setiawan
Lake ecosystem balance is influenced by the interaction and interrelation of upstream and downstream processes of catchment. Environmental degradation upstream affects the trophic status of the lake, triggering the risk of environmental disasters. Integrated lake management is a form of governance to achieve sustainable development goals. This study aims to analyze the implementation of the Rawapening Lake management program plan spatially by considering the environmental risk conditions of the Rawapening catchment area. Semi-quantitative analysis is used to assess the level of disaster risk in Rawapening catchment area. The zoning results of environmental disaster risk areas are used as the basis for the implementation of the 2019 Rawapening lake management plan descriptively. The results showed that Rawapening catchment area has a very low, low, medium, high, and very high risk levels. Panjang Sub Watersheds, Galeh Sub Watersheds, Parat Sub Watersheds, Sraten Sub Watersheds have a high to very high risk level. The Rengas Sub Watershed, Torong Sub Watershed falls into the medium risk category. Low to very low risk levels are scattered in the Legi Sub Watershed, the Kedung Ringis Sub Watershed, and the Ringis Sub Watershed. The complexity of the problems in the agricultural, livestock, residential and industrial sectors is the main contributor to sediment and pollutants in the lake system. The integration of upstream and downstream processes is used as a consideration in conducting spatial planning for Rawapening Lake management to achieve management objectives
{"title":"TATAKELOLA LANSKAP RAWAPENING BERDASARKAN TINGKAT RESIKO BENCANA LINGKUNGAN DI SUB DAS RAWAPENING (Landscape governance of Rawapening based on the level of environmental disaster risk in the Rawapening Sub Watershed)","authors":"Djati Mardiatno, F. Faridah, S. Sunarno, Dwi Wahyu Arifudiin Najib, Y. Widyaningsih, M. Setiawan","doi":"10.20886/JPPDAS.2021.5.1.21-40","DOIUrl":"https://doi.org/10.20886/JPPDAS.2021.5.1.21-40","url":null,"abstract":"Lake ecosystem balance is influenced by the interaction and interrelation of upstream and downstream processes of catchment. Environmental degradation upstream affects the trophic status of the lake, triggering the risk of environmental disasters. Integrated lake management is a form of governance to achieve sustainable development goals. This study aims to analyze the implementation of the Rawapening Lake management program plan spatially by considering the environmental risk conditions of the Rawapening catchment area. Semi-quantitative analysis is used to assess the level of disaster risk in Rawapening catchment area. The zoning results of environmental disaster risk areas are used as the basis for the implementation of the 2019 Rawapening lake management plan descriptively. The results showed that Rawapening catchment area has a very low, low, medium, high, and very high risk levels. Panjang Sub Watersheds, Galeh Sub Watersheds, Parat Sub Watersheds, Sraten Sub Watersheds have a high to very high risk level. The Rengas Sub Watershed, Torong Sub Watershed falls into the medium risk category. Low to very low risk levels are scattered in the Legi Sub Watershed, the Kedung Ringis Sub Watershed, and the Ringis Sub Watershed. The complexity of the problems in the agricultural, livestock, residential and industrial sectors is the main contributor to sediment and pollutants in the lake system. The integration of upstream and downstream processes is used as a consideration in conducting spatial planning for Rawapening Lake management to achieve management objectives","PeriodicalId":187244,"journal":{"name":"Jurnal Penelitian Pengelolaan Daerah Aliran Sungai","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128221562","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}
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