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STUDI HIDROLOGI BERDASARKAN CLIMATE CHANGES MENGGUNAKAN MODEL SWAT DI DAERAH TANGKAPAN AIR WADUK JATILUHUR Supatmanto, Budi Darmawan; Yusuf, Sri Malahayati
Jurnal Sains & Teknologi Modifikasi Cuaca Vol 16, No 2 (2015): December 2015
Publisher : BPPT

Daerah Tangkapan waduk Jatiluhur berada diantara 10701136â - 10703236" BT and 602950" - 604045" LS di Jawa Barat, Indonesia. Area dengan luas 380 km2 merupakan 8% dari seluruh total area Hulu Sungai Citarum seluas 4500 km2. Fungsi dari daerah ini untuk memenuhi kebutuhan air untuk pertanian di Karawang dan Bekasi dan memenuhi kebutuhan air di Jakarta. Tujuan dari penelitian ini untuk meneliti dampak dari perubahan ik (Climate Changes) terhadap hasil hidrologi di daerah tangkapan. Perubahan iklim ditentukan oleh beberapa scenario perubahan iklim yang disiapkan sebagai input dalam SWAT hidrologi model. Simulasi dilakukan sesudah model dikalibrasi untuk mendapatkan parameter model yang sesuai dengan model hidrologi. Setelah itu model divalidasi untuk mengetahui bahwa model menggambarkan keadaan lapangan. hasil penelitian menunjukkan bahwa nilai-nilai limpasan dan hasil air yang bervariasi berdasarkan perubahan iklim. Oleh karena itu, perlu adanya untuk mempertimbangkan faktor-faktor perubahan iklim untuk mempelajari proses hidrologi di Daerah Tangkapan Air.Kata Kunci: SWAT, hidrologi, skenario perubahan iklim dan area tangkapan=Jatiluhur Reservoir Catchment Area is located between 10701136â - 10703236" BT and 602950" - 604045" LS in West Java, Indonesia. The catchment area embraces 380 km2, which is 8% of the total coverage area in the upstream of Citarum River with the total area of 4500 km2. The functions of this catchment are essential for meeting the needs of water for agriculture in Karawang and Bekasi area, and drinking water needs for Jakarta area. The purpose of this study was to investigate the impact of climate change on hydrology yield in the catchment. Changes in climate are discovered by several different climate changes scenarios, prepared as input for hydrological model SWAT. Simulation scenarios conducted after the model is calibrated in order to obtain model parameters that are sensitive to the hydrological response. Afterwards models are validated to find out that the model has described the state of the field. The result showed that the values of runoff and water yield are varies based on climate change. Therefore, there is a need to consider the factors of climate change in order to study hydrological process of a watershed.Keywords: SWAT, hydrology, climate changes scenarios and catchment areas.

STUDI HIDROLOGI BERDASARKAN CLIMATE CHANGES MENGGUNAKAN MODEL SWAT DI DAERAH TANGKAPAN AIR WADUK JATILUHUR Supatmanto, Budi Darmawan; Yusuf, Sri Malahayati
Jurnal Sains & Teknologi Modifikasi Cuaca Vol 16, No 2 (2015): December 2015
Publisher : BPPT

Daerah Tangkapan waduk Jatiluhur berada diantara 107011'36? - 107032'36" BT and 6029'50" - 6040'45" LS di Jawa Barat, Indonesia. Area dengan luas 380 km2 merupakan 8% dari seluruh total area Hulu Sungai Citarum seluas 4500 km2. Fungsi dari daerah ini untuk memenuhi kebutuhan air untuk pertanian di Karawang dan Bekasi dan memenuhi kebutuhan air di Jakarta. Tujuan dari penelitian ini untuk meneliti dampak dari perubahan ik (Climate Changes) terhadap hasil hidrologi di daerah tangkapan. Perubahan iklim ditentukan oleh beberapa scenario perubahan iklim yang disiapkan sebagai input dalam SWAT hidrologi model. Simulasi dilakukan sesudah model dikalibrasi untuk mendapatkan parameter model yang sesuai dengan model hidrologi. Setelah itu model divalidasi untuk mengetahui bahwa model menggambarkan keadaan lapangan. hasil penelitian menunjukkan bahwa nilai-nilai limpasan dan hasil air yang bervariasi berdasarkan perubahan iklim. Oleh karena itu, perlu adanya untuk mempertimbangkan faktor-faktor perubahan iklim untuk mempelajari proses hidrologi di Daerah Tangkapan Air.Kata Kunci: SWAT, hidrologi, skenario perubahan iklim dan area tangkapan=Jatiluhur Reservoir Catchment Area is located between 107011'36? - 107032'36" BT and 6029'50" - 6040'45" LS in West Java, Indonesia. The catchment area embraces 380 km2, which is 8% of the total coverage area in the upstream of Citarum River with the total area of 4500 km2. The functions of this catchment are essential for meeting the needs of water for agriculture in Karawang and Bekasi area, and drinking water needs for Jakarta area. The purpose of this study was to investigate the impact of climate change on hydrology yield in the catchment. Changes in climate are discovered by several different climate changes scenarios, prepared as input for hydrological model SWAT. Simulation scenarios conducted after the model is calibrated in order to obtain model parameters that are sensitive to the hydrological response. Afterwards models are validated to find out that the model has described the state of the field. The result showed that the values of runoff and water yield are varies based on climate change. Therefore, there is a need to consider the factors of climate change in order to study hydrological process of a watershed.Keywords: SWAT, hydrology, climate changes scenarios and catchment areas.

STUDI HIDROLOGI BERDASARKAN CLIMATE CHANGES MENGGUNAKAN MODEL SWAT DI DAERAH TANGKAPAN AIR WADUK JATILUHUR Budi Darmawan Supatmanto; Sri Malahayati Yusuf
Jurnal Sains & Teknologi Modifikasi Cuaca Vol. 16 No. 2 (2015): December 2015
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jstmc.v16i2.1047

Daerah Tangkapan waduk Jatiluhur berada diantara 107011'36â€ - 107032'36" BT and 6029'50" - 6040'45" LS di Jawa Barat, Indonesia. Area dengan luas 380 km2 merupakan 8% dari seluruh total area Hulu Sungai Citarum seluas 4500 km2. Fungsi dari daerah ini untuk memenuhi kebutuhan air untuk pertanian di Karawang dan Bekasi dan memenuhi kebutuhan air di Jakarta. Tujuan dari penelitian ini untuk meneliti dampak dari perubahan ik (Climate Changes) terhadap hasil hidrologi di daerah tangkapan. Perubahan iklim ditentukan oleh beberapa scenario perubahan iklim yang disiapkan sebagai input dalam SWAT hidrologi model. Simulasi dilakukan sesudah model dikalibrasi untuk mendapatkan parameter model yang sesuai dengan model hidrologi. Setelah itu model divalidasi untuk mengetahui bahwa model menggambarkan keadaan lapangan. hasil penelitian menunjukkan bahwa nilai-nilai limpasan dan hasil air yang bervariasi berdasarkan perubahan iklim. Oleh karena itu, perlu adanya untuk mempertimbangkan faktor-faktor perubahan iklim untuk mempelajari proses hidrologi di Daerah Tangkapan Air.Kata Kunci: SWAT, hidrologi, skenario perubahan iklim dan area tangkapan=Jatiluhur Reservoir Catchment Area is located between 107011'36â€ - 107032'36" BT and 6029'50" - 6040'45" LS in West Java, Indonesia. The catchment area embraces 380 km2, which is 8% of the total coverage area in the upstream of Citarum River with the total area of 4500 km2. The functions of this catchment are essential for meeting the needs of water for agriculture in Karawang and Bekasi area, and drinking water needs for Jakarta area. The purpose of this study was to investigate the impact of climate change on hydrology yield in the catchment. Changes in climate are discovered by several different climate changes scenarios, prepared as input for hydrological model SWAT. Simulation scenarios conducted after the model is calibrated in order to obtain model parameters that are sensitive to the hydrological response. Afterwards models are validated to find out that the model has described the state of the field. The result showed that the values of runoff and water yield are varies based on climate change. Therefore, there is a need to consider the factors of climate change in order to study hydrological process of a watershed.Keywords: SWAT, hydrology, climate changes scenarios and catchment areas.

Model Pemberdayaan Masyarakat melalui Pengolahan Kopi di Desa Mandiri Energi Yohanes Aris Purwanto; Kukuh Murtilaksono; Sri Malahayati Yusuf
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 1 No. 1 (2015): Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.1.1.28-34

Development of energy self-sufficient village based on the local resources is purposed to reduce the poverty, to create the job opportunities as well as to substitute the fossil fuels. Energy self-sufficient village is also as sociated with the development of the productive economy. For the areas closed to national park, the development of the productive economy is important because it can reduce community activities for reaching the forest. Lebakpicung is energy self-sufficient village based on microhydro. This village has potency on coffee production. However, only dried coffee beans are produced from this village. The purpose of this community empowerment activity in Energy self-sufficient village was to utilize idle electricity from microhydro during day time as energy resource for coffee processing. This activity was carried out through training activity on the use of coffee processing machinery and packaging technology. The training participants were the community members who has activity on coffee processing.

MODEL OF SOIL AND WATER CONSERVATION MEASURES APPLICATION BASED ON DISTRICT SPATIAL PLANNING IN MAMASA WATERSHED, SOUTH SULAWESI Sri Malahayati Yusuf; Kukuh Murtilaksono; R.K. Astuti; Syaiful Arifin
Geoplanning: Journal of Geomatics and Planning Vol 4, No 2 (2017)
Publisher : Department of Urban and Regional Planning, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/geoplanning.4.2.263-272

Depletion of watershed carrying capacity cannot be omitted from mismanagement of the watershed. The integration between SWAT model and remote sensing data are able to identify, assess, and evaluate watershed problem as well as a tool to apply the mitigation of the problem. The aim of this study was to arrange the scenario of watershed management, and decide the best recommendation of sustainable watershed management of Mamasa Sub Watershed. The best recommendation was decided by hydrology parameters, e.i. surface runoff, sediment, and runoff coefficient. Hydrology characteristics of Mamasa Sub Watershed was analyzed based on land use data of year 2012 and climate data for period of 2010-2012. The scenarios were application of bunch and mulch in slope 1-15%; bunch terrace (scenario 1), mulch and strip grass in slope 15-25% (scenario 2), alley cropping in slope 25-40% (scenario 3), and combination scenario 1, 2, 3 with agroforestry in slope > 40% (scenario4). Surface runoff value of Mamasa Sub Watershed is 581.35 mm, while lateral flow, groundwater flow, runoff coefficient, and sediment yield of 640.72 mm, 228.17 mm, 0.29, and 187.213 ton/ha respectively. Based on the scenario’s simulation, the fourth scenario was able to reduce surface runoff and sediment yield of 33.441% and of 51.213%, while the runoff coefficient declined to 0.194. Thereby, the fourth scenario is recommended to be applied in Mamasa Sub Watershed so that the sustainability in the watershed can be achieved.

PERUBAHAN SPASIAL TUTUPAN LAHAN DI DAS CITARUM HULU Sri Malahayati Yusuf
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 8 No. 3 (2018): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.8.3.365-375

Land cover is one of factors which is important in watershed management. The changes of land cover in a watershed can affect the hydrology abstraction. Land cover of upstream Citarum watershed is potentially changes. Economy, social, population, and natural hazard are factors that affect the change in land cover. The aim of this research were to analyze spatial change of land cover in upstream Citarum watershed period 2006-2014 and predicting future land cover of 2030 as usual and applying a policy to conserve paddy field and forest. Analysis was carried out applying Cellular automata markov chain of land cover spatial model. The result showed that Kappa and total accuracy for image classification were 0.89 and 0.92. Dominant land cover type in upstream Citarum watershed was paddy field of 25.99 – 26.06%. The average of land cover changes approximately < 1% with conversion of paddy field to built up area is the dominant change. Model validation of 2014 predicted land cover was 0.992, while Kappa for optimum iteration of 7 was 0.994. The land cover for period 2006-2030 was change approximately < 1%. The types of land cover that increase in 2030 were built up area and mixed farming of 0.21% and 0.11%, respectively, while plantation forest, moor, paddy field, and bareland were decreasing approximately 0.17, 0.23, 0.62 and 0.02%. The predicted land cover of 2030 under protection of paddy filed and forest scenario was trigger the increasing of mixed farming 0.36%, while moor and bareland were decrease of 0.22 and 0.10%.

Kajian Erosi Tanah menggunakan Isotop 137Cs dan 210Pb Excess di Sub DAS Ciesek, DAS Ciliwung Hulu, Bogor Kukuh Murtilaksono; Ania Citraresmini; Sri Malahayati Yusuf; Taufik Bachtiar; Dwi Mei Lawaswati
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 10 No. 3 (2020): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.10.3.501-510

Fallout radio nuclides method has been being applied and developed to study and measure soil erosion for long time. This research aims to predict soil erosion/deposition in Ciesek subwatershed, Upper Ciliwung watershed using natural fallout radionuclides of 137Cs and 210Pb excess. Soil samples were taken using soil core along four transects of different land use types. Soil samples were analyzed using Multi Channel Analyzer (MCA) to obtain inventory value of the radioisotopes. The research shows different distribution pattern of soil erosion/deposition of 137Cs and 210Pb excess isotopes. Application of 137Cs isotope shows soil erosion process under home mix garden and dryland farm, but soil deposition process occurs on bareland. In the contrary, 210Pb excess indicates soil erosion on bare land while soil deposition is under home mix garden and dryland farm. Application of 210Pb excess is more reliable than 137Cs in predicting soil erosion.

Pemetaan sebaran erosi tanah prediksi melalui integrasi model USLE ke dalam Sistem Informasi Geografis Sri Malahayati Yusuf; Kukuh Murtilaksono; Dwi Mei Lawaswati
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 10 No. 4 (2020): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.10.4.594-606

The application of USLE model to several watersheds in Indonesia shows the diversity of processes that affect soil erosion. The integration of USLE model into Geography Information System (GIS) is able to provide a spatial distribution of soil erosion classes. This study aims to predict the soil erosion rate in various land cover in Ciesek sub watershed by integrating the USLE model into GIS. Undisturbed and disturbed soil sampling was carried out based on soil map unit, accompanied by observations of soil physic characteristics. Soil erosion prediction was done using the raster calculator with input raster-based data that has a certain spatial resolution. Analysis of the erosion class distribution on various land cover and slope classes was carried out by using the cross tabulation method. The results showed that the very low soil erosion class was dominant in the study location, namely in areas with forest land cover. The highest predicted of soil erosion rate resulted from bare land, followed by moorland and mix garden.

Water quality in areas around Galuga Landfill, Bogor Regency, West Java Yayat Hidayat; Wahyu Purwakusuma; Sri Malahayati Yusuf; Latief Mahir Rachman; Enni Dwi Wahjunie; Dwi Putro Tejo Baskoro; Aditia Sapto Utomo; Elianah
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 11 No. 4 (2021): Journal of Natural Resources and Environmental Management
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.11.4.578-586

The research is aimed to analyze leachate, surface water and ground water characteristics around Galuga landfill site, Bogor District. Water samples had been taken in dry season of 2014 and in the end of rainy season of 2015 from several sites in areas around Galuga landfills which included leachate water, surface water, and ground water. Leachate, surface water and ground water had temperature and pH in normal ranges; whereas nitrate and Pb contents were high to very high levels, especially in site adjacent to waste piles. The concentrations decreased in line with increasing distance from waste piles. Higher content of nitrate in leachate occurred in dry season, but in well water it was found in rainy season. Meanwhile, Pb content in well water were high, both in dry and rainy seasons. Concentrations of nitrate and Pb in leachate water were higher than wastewater quality standard, so that the leachate water were not safe to be discharged directly to natural water body. The high content of nitrate and Pb caused the well water unsuitable to be consumed without water treatment processing.

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