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"Tingkat kepadatan penduduk yang tinggi di tempat pengabdian, menyebabkan air tanah semakin banyak dibutuhkan, tetapi kondisinya saat ini semakin menipis karena kurangnya lahan resapan. Hal ini disebabkan alih fungsi lahan yang tinggi sehingga lahan menjadi kedap air. Banyak warga yang membeli air bersih ketika musim kemarau tetapi ketika musim hujan banyak genangan air di halaman rumah dan jalan akibat kapasitas dari drainase yang tersedia tidak mencukupi lagi. Lebih jauh limpasan air hujan di daerah tersebut berkontribusi pada banjir di wilayah Jatinangor dan Rancaekek. Untuk mengatasi masalah tersebut dilakukan penyuluhan guna mengubah, paradigma pengelolaan air hujan yang asalnya hanya menyalurkan ke saluran drainase menjadi memaksimalkan penyerapannya dengan cara mengajak masyarakat untuk menbuat LRB. Dipilihnya LRB karena merupakan salah satu teknologi tepat guna yang mudah dilakukan, relative murah, ramah lingkungan dan merupakan cara yang efektif untuk konservasi air bawah tanah dapat mengatasi krisis air, dan berkontribusi secara nyata dalam mengurangi sumbangan bencana banjir. Manfaat yang telah dirasakan warga dengan membuat LRB adalah menghilangkan genangan air di halaman dan jalan, dan lebih jauh dapat menjadi cadangan air tanah. Karena LRB tersebut dapat diiisi dengan sampah organik, yang dapat berubah menjadi kompos, maka manfaat lain nya ialah dapat meningkatkan pengolahan sampah organik menjadi kompos."

"Penelitian dilakukan di Daerah Aliran Sungai Opak Wilayah Prambanan dan sekitarnya meliputi Kecamatan Prambanan dan Piyungan, Yogyakarta dengan luas area sebesar 74,84 km. Selama beberapa tahun terakhir, daerah penelitian kerap dilanda  krisis air bersih bahkan di musim penghujan.  Kejadian ini sejalan dengan semakin bertambahnya pembangunan permukiman, tempat wisata, dan penginapan di daerah tersebut. Maka, peneliti melakukan pemetaan daerah potensi resapan sebagai salah satu upaya konservasi daerah resapan air dalam perencanaan tata ruang. Salah satu metode yang dapat digunakan untuk membuat peta potensi ialah metode penginderaan jauh dan SIG. Pada beberapa penelitian sebelumnya, metode ini dinilai cukup efektif dalam memetakan daerah resapan. Adapun berdasarkan penelitian sebelumnya, terdapat beberapa parameter yang digunakan penelitian ini untuk memetakan daerah resapan, yaitu kemiringan lereng, jenis tanah, litologi, tutupan lahan, densitas drainase, densitas kelurusan, dan curah hujan. Parameter-parameter ini kemudian diolah menjadi peta-peta tematik lalu direklasifikasi sesuai dengan tingkat kemampuan setiap kelasnya dalam menyerap dan meloloskan air ke akuifer. Setelah itu, dilakukan pembobotan menggunakan metode Analytical Hierarchy Process (AHP) dengan hasil yaitu: kemiringan lereng 32,3%, jenis tanah 23,4%, litologi 17,6%, tutupan lahan 10,4%, densitas drainase 7,6%, densitas kelurusan 4,7%, dan curah hujan 3,7%. Hasil integrasi ketujuhparameter menghasilkan lima kelas daerah potensi resapan yaitu potensi sangat rendah mencakup 0,6% daerah penelitian, potensi rendah mencakup 7,2%, potensi moderat mencakup 29,3%, potensi tinggi mencakup 42,5%, dan potensi sangat tinggi mencakup 20,7% daerah penelitian. 

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The research was conducted in the Opak River Watershed in the Prambanan and surrounding areas, covering Prambanan and Piyungan sub-districts, Yogyakarta with an area of 74.84 km. Over the past few years, the study area has often been hit by a clean water crisis even in the rainy season. This incident is in line with the increasing development of settlements, tourist attractions, and inns in the area. So, the researcher conducted a mapping of potential infiltration areas as one of the efforts to conserve water catchment areas in spatial planning. One method that can be used to create a potential map is remote sensing and GIS. In some previous studies, this method was considered quite effective in mapping infiltration areas. As based on previous research, there are several parameters used by this research to map infiltration areas, namely slope, soil type, lithology, land cover, drainage density, straightness density, and rainfall. These parameters were then processed into thematic maps and reclassified according to the level of ability of each class to absorb and pass water to the aquifer. After that, weighting was done using the Analytical Hierarchy Process (AHP) method with the results: slope 32.3%, soil type 23.4%, lithology 17.6%, land cover 10.4%, drainage density 7.6%, alignment density 4.7%, and rainfall 3.7%. The integration of the seven parameters resulted in five classes of infiltration potential areas: very low potential covering 0.6% of the study area, low potential covering 7.2%, moderate potential covering 29.3%, high potential covering 42.5%, and very high potential covering 20.7% of the study area."

"Jagakarsa is one of "the water catchment areas" in Jakarta that has green open space. The elements and design of the green open space are very important to be studied, in relation to the occurrence of the wild animal particularly birds in this area. The tittle of this study is "A study on biodiversity of green open space in Jagakarsa water catchment area". The report was divided into two sub tittles: "Vegetation structure and composition at the green open space of water catchment area in Jagakarsa", and "Bird inventory at the green open space of water catchment area in Jagakarsa". The objectives of this study are to examine the structure and composition of the vegetation related to the occurrence of birds in the green open space.The study was conducted from July to December 1999 by compiling both primary and secondary data. The study area was divided into four categories; home garden, green belt along the river, cemetery area (modern and traditional), and urban forests.The highest diversity of vegetation was found in home garden, which was consisted of fruits, and plants used as house fence. Over half of plantin species at home garden are ornamental plant. Beside that, heterogeneity plants at home garden showed higher than the other green open space in Jagakarsa, Also, home garden was managed better than the other green open space in Jagakarsa.Generally, people around the river use green belt along the river as fruit garden. Plant species diversity in those belt are lower than home garden and less managed by people. However, at the green belt along Krukut river was found the regenerated of plants. The vegetation neither ornamental nor valuable cemetery plants with urban cemetery concept was dominated by ornamental plants with high esthetical value, which has maximum height less than one meter. In the traditional cemetery, Ptumeria alba, Codeaeum variegatum, Dracaena fragrans were found dominantly planted with irregularity in patterns.There were 28 species of 18 families of birds found in this study. The highest number of species {15 species) was found at the green belt along Ciliwung River, and surrounding of Situ Babakan (14 species). Water birds were found at Ciliwung River, Kali Krukut, and Situ Babakan. Birds that living in high grasses and shrubs also found at these areas. Most of the birds found in the area are insectivore (42,86%).Vegetation is very important for bird, not only as food resources but also as a resting, sleeping, and nesting place. Fruits and flowers as food resources of insect related to the occurrence of birds were discussed in this paper.iv Habitat degadration and bird hunting are threats for the birds. Therefore, community awareness, selection of plant species, and design of vegetation pattern that fulfil the needs of bird are very important for bird conservation in urban city."

"SUSTAIN merupakan suatu kerangka kerja dalam bentuk software yang dapat menjadi suatu pendukung keputusan terintegrasi untuk memilih penanganan dan lokasi wilayah resapan. Penggunaan Tanah dalam SUSTAIN sangatlah penting karena berguna untuk memprediksi arah aliran dan kualitas air pada bagian hulu sampai hilir Daerah Tangkapan Air DTA. SUSTAIN diterapkan pada DTA UI karena kondisi perairan yang tergolong buruk dan buruk sekali menurut BP3UI. Berdasarkan variabel yang ditetapkan oleh SUSTAIN dan penelitian terdahulu, variabel yang terpilih adalah Ketinggian, Lereng, Penggunaan tanah, Jenis Tanah, dan Jaringan Aliran Air. Penelitian bertujuan untuk menganalisis pengaruh perbedaan skala peta penggunaan tanah terhadap sebaran Teknologi LID pada wilayah resapan. Penentuan Teknologi LID pada wilayah resapan didasari oleh ketentuan US EPA yang terdapat pada modul BMP Siting tools didalam kerangka kerja SUSTAIN dan diolah dengan metode Intersect dengan parameter yang telah ditetapkan. Hasil penelitian menunjukkan semakin besar skala peta penggunaan tanah terhadap penerapan Teknologi LID lebih baik diterapkan pada lahan terbangun yang padat.

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SUSTAIN is a software based framework in form of integrated decision support to choose treatment and location of the Recharge Region. Landuse in SUSTAIN is important because it was useful for predicting the direction of water flow and quality upstream to downstream of the Catchment Area. SUSTAIN was applied to catchment area of Universitas Indonesia due to poor and bad waters condition category according to BP3UI. Based on the variables set by SUSTAIN and previous research, the selected variables are Altitude, Slope, Landuse, Soil Type, and Water Flow Network.

The objectives of the study were to analyze the influence of different scale of landuse map on the distribution of LID Technology in the catchment area. The determination of LID technology in the catchment area was based on the US EPA parameters contained in the BMP Siting tools module within the SUSTAIN framework and processed by the Intersect method with predefined parameters. The results show that the larger scale of land use maps on the application of LID Technology is better applied to dense constructed land."

"Air tanah merupakan salah satu sumber daya alam yang sangat penting. Berdasarkan kebutuhan penduduk, penggunaan air tanah memenuhi sekitar 60% untuk irigasi, industri, air minum, MCK, dll. Berdasarkan data DESDM Provinsi Banten (2016), wilayah Kecamatan Bayah termasuk ke dalam akuifer produktif kecil dan air bawah tanah langka. Dengan berkembangnya Wisata di wilayah Bayah maka akan diperlukan tata ruang kawasan objek wisata yang diharapkan tidak hanya mementingkan keuntungan saja melainkan dengan berwawasan lingkungan. Salah satu hal yang penting dalam penentuan tata ruang berwawasan lingkungan adalah dengan penentuan kawasan resapan air tanah di daerah tersebut, mengingat air tanah atau akuifer di wilayah Bayah sendiri yang memiliki produktif kecil dan langka. Tujuan dari penelitian ini adalah untuk mengetahui sebaran potensi resapan air tanah di daerah Kecamatan Bayah. Metode yang digunakan dalam penelitian ini adalah dengan metode Remote Sensing atau penginderaan jauh. Sumber data yang digunakan adalah peta geologi, citra DEMNAS, citra Landsat-8, citra Landsat-5 TM, stasiun curah hujan Bayah. Data-data tersebut diolah menggunakan GIS untuk menghasilkan peta-peta tematik seperti peta litologi, tutupan lahan, densitas pola kelurusan, densitas drainase, curah hujan, kemiringan lereng, dan geomorfologi. Dari seluruh peta tematik dilakukan skoring dengan metode multi-criteria evaluation/analysis berdasarkan keunggulan tiap peta tematik dan data di dalam peta tematik itu sendiri terhadap besar resapan air tanah. Hasil dari skoring pada tiap peta tematik kemudian dilakukan overlay tiap peta tematik untuk menghasilkan peta potensi resapan air tanah.Groundwater is one of the most important natural resources. Based on

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industry, drinking water, sanitary facilities, etc. Based on data from the DESDM of Banten Province (2016), the Bayah Subdistrict area belongs to a small productive aquifer and rare underground water. With the development of tourism in the Bayah region, it will be necessary to have a spatial layout of tourist attractions that are expected not only to be concerned with profit but also with environmental insight. One of the important things in determining environmentally planning is by determining groundwater recharge areas in the area, considering groundwater or aquifers in the Bayah region itself which has small and rare productions. The purpose of this study was to determine the distribution of potential groundwater recharge in the Bayah District. The method used in this study is the Remote Sensing method. Data sources which used here is geological maps, DEMNAS imagery, Landsat-8 imagery, Landsat-5 TM imagery, Bayah rainfall stations. These data are processed using GIS to produce thematic maps such as lithology maps, land cover, Lineament density, drainage density, rainfall, slope, and geomorphology. Scoring of all thematic maps is done using the multi-criteria evaluation / analysis method based on the superiority of each thematic map and the data in the thematic map itself on large groundwater recharge. The results of scoring on each thematic map are then overlaid on each thematic map to produce a map of potential groundwater recharge"

"Volume sampah yang dihasilkan oleh kegiatan manusia jumlahnya lebih banyak daripada jumlah sampah yang bisa terangkut ke tempat pembuangan akhir. Penelitian ini memiliki tujuan untuk mengetahui tingkat pengetahuan dan volume timbulan sampah yang dihasilkan oleh SMP Negeri 230 Jakarta. Metode penelitian ini adalah kuasi eksperimen dengan menggunakan rancangan The One Group Pre-Test and Post-Test Design. Intervensi yang diberikan berupa sosialisasi tentang sampah dan pembuatan lubang resapan biopori. Pengukuran data dilakukan sebanyak dua kali yaitu saat sebelum dan sesudah diberikan perlakuan terhadap responden. Adapun responden di dalam penelitian ini ada sebanyak 101 orang siswa. Hasilnya menunjukkan terdapat kenaikan rata-rata tingkat pengetahuan siswa dari 8,01 (sebelum sosialisasi) menjadi 9,04 (setelah sosialisasi). Hasil uji statistik menunjukkan adanya peningkatan tingkat pengetahuan yang signifikan (p<0,001) antara sebelum dan sesudah intervensi. Volume rata-rata timbulan sampah sekolah mengalami penurunan dari 395,275 Liter (sebelum sosialisasi dan pembuatan lubang biopori) menjadi 325,545 Liter (setelah sosialisasi dan pembuatan lubang biopori. Disimpulkan bahwa intervensi berupa sosialisasi dan pembuatan lubang biopori meningkatkan tingkat pengetahuan responden dan menurunkan volume timbulan sampah sekolah.

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The volume of waste produced by human activities is higher than the amount of waste that can be transported to landfills. This study aims to determine the level of knowledge and volume of waste produced by SMP Negeri 230 Jakarta. The method of this research is a quasi-experiment using the design of The One Group Pre-Test and Post-Test Design. The intervention given was the socialization about waste and making biopori infiltration holes. Data measurements were carried out twice, namely before and after treatment of respondents. The respondents in this study were 101 students. The results indicate an increase in the average level of student knowledge from 8.01 (before socialization) to 9.04 (after socialization). Statistical test results showed a significant increase in the level of knowledge (p <0.001) between before and after the intervention. The average volume of school solid waste has decreased from 395.275 liters (before socialization and biopori hole making) to 325.545 liters (after socialization and biopori hole making) It was concluded that interventions in the form of socialization and making biopori holes increased respondents knowledge level and decreased the volume of school waste generation."

"ABSTRAKThe Research Center for Water Resources has been involved in the implementation of Weather Modification Technology (WMT) with the evaluation of results. In anticipation of futher evaluation, a standard precept should be set up in the context that the implementation unit of cloud seeding is not making rain but modifying the weather. "

"ABSTRAK Pemanenan air hujan telah diterapkan dibanyak wilayah dunia ketika pasokan air baku tidak mencukupi bagi masyarakat. PT KI di Jakarta memiliki sumber daya air hujan dalam kolam penampung air hujan dengan menggunakan Ground Catchment SystemABSTRACT Rainwater harvesting has been applied in many parts of the world when raw water supply is insufficient for the community. PT KI in Jakarta has rainwater resources in rainwater collection ponds using the Ground Catchment System. PT KI processes these untapped sources of rainwater as a source of clean water for domestic and industrial purposes. The purpose of this research is to meet the needs of clean water, and to anticipate floods and droughts. The variables examined in this research are the amount of rainwater harvest, rainwater quality, rainwater conservation carried out seen from the reduction of PDAM water consumption and reduction of PDAM water usage costs, as well as the influence of knowledge level on employee attitudes using qualitative and quantitative methods for one year. From the research results, it can be concluded that the feasibility of rainwater treatment in terms of the quantity of water produced during 1 year can reduce PDAM water consumption by 34% and reduce PDAM water usage costs by 28%. In general, the feasibility of conserving rain water and harvesting it for the needs of the industrial community in PT KI can be said to be feasible as a provider of clean water as a substitute/reduction in water consumption of PDAM at PT KI."