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All Journal Indonesian Journal of Geography Jurnal Ilmu Lingkungan Agrikultura Teknotan: Jurnal Industri Teknologi Pertanian Jurnal AGROTEKNOLOGI JURNAL TEKNOLOGI LINGKUNGAN Jurnal Keteknikan Pertanian Cropsaver : Journal of Plant Protection Indonesian Journal of Forestry Research SITEKIN: Jurnal Sains, Teknologi dan Industri Journal of Degraded and Mining Lands Management Jurnal Keteknikan Pertanian Tropis dan Biosistem Arena Hukum Prosiding Semnastek Register: Jurnal Ilmiah Teknologi Sistem Informasi Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) JURNAL SUMBER DAYA AIR Proceedings Series on Physical & Formal Sciences Jurnal Ilmu Kehutanan Jurnal Indonesia Sosial Sains Indonesian Journal of Forestry Research
Chay Asdak
Universitas Padjadjaran
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Neuroscience Physics Social Sciences Other

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Hydrological Implication of Bamboo And Mixed Garden In The upper Citarum Watershed Chay Asdak
Indonesian Journal of Geography Vol 38, No 1 (2006): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.2231

Abstract

The assessment of important factors affecting runoff and erosion was carried out by collecting runoff and soil loss from four runoff/erosion plots. The runoff/erosion plots were set up in sloping areas of about 40% slope in the upper area of Ciwidey sub-watershed (upper Citarum watershed), West Java. The plots (6 x 10 m) were established in the following four sets of conditions: bamboo plantation, mixed garden, small shrub, and agricultural field with different species and stand structures. After 20 rainfall events, a treatment in the form of removing undergrowth and litter were applied to bamboo and mixed garden plots. The result of this before and after treatment are the following: runoff from bamboo plantation was increased from 0.40 to 1.02 litre/m2 and erosion was increased from 1.47 to 11.65 gr/m2. While the runoff and erosion in mixed garden were increased from 0.36 to 1.65 litre/m2 and from 1.36 to 10.88 65 gr/m2, respectively. When this compared to the runoff and soil loss in the agricultural plot, the soil erosion is much higher, 50.5 gr/m2 (about 50 times higher). Stand/canopy structure appeared to be the important factors that determine the magnitude of soil erosion. While the role of these factors were less significant compared to rainfall in determining the magnitude of runoff.
Estimasi Volume Limpasan dan Debit Puncak Sub DAS Cikeruh Menggunakan Metode SCS-CN (Soil Conservation Service-Curve Number) Andiles Kusnadi Sentosa; Chay Asdak; Edy Suryadi
Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol 9, No 1 (2021)
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jkptb.2021.009.01.10

Abstract

Pertambahan jumlah penduduk dan pembangunan yang terus meningkat menjadi permasalahan yang serius, terutama di wilayah perkotaan yang menjadi pusat perekonomian, pemerintahan, perdagangan dan perindustrian. Perubahan tata guna lahan akibat pembangunan dapat menyebabkan sebuah wilayah mengalami banjir dan genangan yang terjadi pada musim hujan. Sub DAS Cikeruh merupakan Sub DAS bagian dari DAS Citarum hulu. Wilayah Sub DAS Cikeruh dikenal sering mengalami musibah banjir. Penelitian ini bertujuan untuk menganalisis volume limpasan dan debit puncak Sub DAS Cikeruh. Analisis volume limpasan dan debit puncak menggunakan metode SCS-CN (Soil Conservation Service-Curve Number). Total volume limpasan permukaan (Q) Sub DAS Cikeruh pada kejadian hujan maksimum sebesar 102.8 mm tahun 2016 adalah 9 920 025 m3. Debit puncak (Qp) periode ulang 2 tahun sebesar 462.47 m3/s, periode ulang 5 tahun diperoleh sebesar 908.83 m3/s, periode ulang 10 tahun diperoleh sebesar 1 044.07 m3/s, periode ulang 25 tahun diperoleh sebesar 1216.63 m3/s, periode ulang 50 tahun diperoleh sebesar 1345,25 m3/s dan periode ulang 100 tahun diperoleh sebesar 1 472.96 m3/s. Hasil penelitian ini berguna untuk data awal sebagai penelitian lanjutan seperti pemodelan banjir dan pembuatan saluran pengendali banjir.
KAJIAN PEMBUANGAN LIMBAH INDUSTRI BATU ALAM TERHADAP KUALITAS AIR IRIGASI DESA PANONGAN KECAMATAN PALIMANAN KABUPATEN CIREBON Silvy Santika; Chay Asdak; Edy Suryadi
Jurnal Indonesia Sosial Sains Vol. 2 No. 10 (2021): Jurnal Indonesia Sosial Sains
Publisher : CV. Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (390.226 KB) | DOI: 10.59141/jiss.v2i10.438

Abstract

Sungai merupakan salah satu sumberdaya air yang sangat dibutuhkan bagi makhluk hidup. Fungsi sungai yaitu sumber air minum, sarana transportasi, irigasi, perikanan, dan sebagainya. Sungai dekat kawasan industri batu alam di Kecamatan Palimanan, Cirebon yaitu Sungai Jamblang, berfungsi sebagai sumber air irigasi Desa Panongan. Sungai Jamblang berpotensi tercemar limbah cair batu alam yang berdampak pada kualitas air irigasi Desa Panongan. Penelitian ini bertujuan untuk mengetahui proses pembuangan limbah cair batu alam di sekitar Sungai Jamblang dan dampak limbah cair batu alam terhadap kualitas air irigasi Desa Panongan. Metode dalam penelitian ini yaitu metode deskriptif dan metode Storet. Parameter uji dalam penelitian ini meliputi pH, DHL, TDS, NO3, Cl, B, PO4, dan K dari setiap titik lokasi pengambilan sampel air. Hasil pengujian dilakukan di PT. Sucofindo kemudian dihitung menggunakan metode Storet. Status mutu air Sungai Jamblang di titik 1 yaitu cemar sedang dan air Sungai Jamblang di titik 2 yaitu cemar berat. Status mutu air irigasi Desa Panongan yaitu cemar sedang. Status mutu air yang diperoleh menunjukkan bahwa adanya limbah cair batu alam berdampak pada kualitas air irigasi, namun tidak semua parameter kualitas air irigasi yang melebihi baku mutu air buruk bagi tanaman pertanian di Desa Panongan.
PENGELOLAAN SUMBER DAYA AIR BERDASARKAN KEARIFAN TRADISIONAL: PERSPEKTIF HUKUM LINGKUNGAN Nadia Astriani; Ida Nurlinda; Amiruddin A.Dajaan Imami; Chay Asdak
Arena Hukum Vol. 13 No. 2 (2020)
Publisher : Arena Hukum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.arenahukum.2020.01302.1

Abstract

AbstractLegal pluralism in Indonesia provides a place for indigenous peoples to manage their natural resources where their lives are based on a living philosophy that is in harmony with nature, produces a pattern of management of natural resources that is environmentally friendly and sustainable. This article focus on studying water resource management practices based on traditional wisdom carried out by indigenous peoples in Indonesia and whether the management of water resources based on traditional wisdom can be used as an example of sustainable water resource management. The results of research conducted on the Ciptagelar indigenous people, Subak practices in Bali and 9 (nine) regions in Indonesia show that the practices of water resource management carried out in these areas are in line with the approach of sustainable water resource management. Some forms of community practice can even be adopted in the management of water resources carried out by the government. Furthermore, regulation of water resources based on values that live in society is easier to implement in the life of the community itself, therefore, regulation of water resources in the future must pay more attention to the values that live in the community. Abstrak Pluralisme hukum di Indonesia memberikan tempat bagi masyarakat adat untuk mengelola sumber daya alamnya, yang kehidupannya dilandasi falsafah hidup yang selaras dengan alam, menghasilkan pola pengelolaan sumber daya alam yang ramah lingkungan dan berkelanjutan. Artikel ini fokus pada mempelajari praktek pengelolaan sumber daya air (SDA) berdasarkan kearifan tradisional yang dilakukan masyarakat adat di Indonesia dan apakah pengelolaan SDA berdasarkan kearifan tradisional ini dapat dijadikan contoh pengelolaan SDA yang berkelanjutan. Hasil penelitian yang dilakukan pada masyarakat adat Ciptagelar, praktik Subak di Bali dan 9 wilayah di Indonesia menunjukkan bahwa praktik-praktik pengelolaan SDA di wilayah tersebut sejalan dengan pendekatan pengelolaan SDA yang berkelanjutan. Beberapa bentuk praktik masyarakat bahkan dapat diadopsi dalam penyelenggaraan pengelolaan SDA yang dilakukan oleh pemerintah. Pengaturan SDA yang berbasis nilai-nilai yang hidup di masyarakat lebih mudah diterapkan dalam kehidupan masyarakat itu sendiri, sehingga ke depan pengaturan SDA harus lebih memperhatikan nilai-nilai yang hidup di masyarakat.
Sustainable Forest Management from Hydrology and Climate Change Mitigation Perspectives Widiyatno Widiyatno; Chay Asdak
Jurnal Ilmu Kehutanan Vol 17 No 1 (2023): March
Publisher : Faculty of Forestry Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v17i1.6904

Abstract

The increasing number of hydrometeorological disasters induced by unsustainable landscape management has led to significant fatalities and economic loss. Forest ecosystem landscapes are strategic national capital that could contribute to climate change mitigation. The government had formulated policies on Folu Net Sink 2030 through sustainable forest management, environmental and carbon governance, and a Nationally Determined Contribution (NDC) strategic approach using its natural infrastructure in the form of forest ecosystem landscapes. The government could establish attractive and integrated incentive and disincentive systems and mechanisms with sustainable forest management to achieve the targets.
A NATIONAL POLICY ON INDONESIA’S INTEGRATED WATER RESOURCE CONSERVATION MANAGEMENT Chay Asdak; Yulizar Yulizar; Subiyanto Subiyanto
Indonesian Journal of Forestry Research Vol 10, No 2 (2023): Indonesian Journal of Forestry Research
Publisher : Secretariat of Agency for Standardization of Environment and Forestry Instruments

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59465/ijfr.2023.10.2.151-162

Abstract

Changes in the global precipitation would affect Indonesia to improve the water resources management system. As most watersheds are in the critical stage nowadays, it is extremely important to develop a new plan and policy on water conservation which integrate the most important parameters reasonably. This has a purpose to ensure that water resources are available for all activities purposes within the area, especially for the future time period. Integrated Water Resources Conservation Management (IWCM) is one of the promising approaches that mainly developed through the participation of all stakeholders. This participation brings the equal responsibility to protect and manage the water resources in a sustainable way, which might differ from one to another area in Indonesia. Therefore, it is important to bring up local practices on water conservation management. The approach strategies that provided in this paper could improve the water national policy in Indonesia. Furthermore, it also could minimize the gap of the current regulation between local and national levels.
Keanekaragaman Tumbuhan Bawah dan Implikasinya terhadap Serangga di Kawasan Budi Daya Tanaman di Kawah Kamojang, Kecamatan Ibun, Kabupaten Bandung, Jawa Barat Rasiska, Siska; Sudarjat, Sudarjat; Asdak, Chay; Parikesit, Parikesit; Gunawan, Budhi
Agrikultura Vol 34, No 2 (2023): Agustus, 2023
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/agrikultura.v34i2.46186

Abstract

Lanskap di Kawah Kamojang, Kecamatan Ibun, Kabupaten Bandung terdiri dari kawasan konservasi, kawasan lindung dan kawasan budi daya yang memiliki keanekaragaman hayati yang tinggi. Penelitian ini bertujuan untuk mengidentifikasi keanekaragaman jenis tumbuhan bawah dan serangga yang terdapat di kawasan budi daya. Metode yang digunakan adalah eksploratif deskriptif dengan pengambilan sampel secara transek garis berjalur sejauh radius 500m di empat lokasi kawasan budidaya yang berbeda, yaitu di dekat Cagar Alam (CA), Taman Wisata Alam (TWA), lahan pertanian dan Hutan Lindung (HL). Penelitian ini dilaksanakan pada bulan Juli hingga November 2022. Hasil penelitian menunjukkan ditemukannya 41 famili dan 96 spesies tumbuhan bawah serta tiga famili yang memiliki Indeks Nilai Penting (INP) tertinggi, yaitu Asteraceae, Fabaceae, dan Poaceae. Tumbuhan bawah Ageratina riparia banyak ditemukan di dekat CA dan TWA, sedangkan Imperata cylindrica banyak ditemukan di dekat lahan pertanian dan HL. Keanekaragaman jenis tumbuhan bawah terkategori tinggi dan tersebar di semua lokasi secara merata. Kelompok serangga yang ditemukan termasuk ke dalam 9 ordo dan 78 famili dan tiga famili dengan nilai INP tertinggi yaitu Cicadellidae, Acrididae dan Drosophilidae.  Famili Cicadellidae banyak ditemukan di dekat CA dan HL, Acrididae di dekat TWA dan Drosophillidae di  dekat lahan pertanian. Sebagian besar serangga memiliki peran fungsional sebagai herbivor (32 famili) dengan INP tertinggi yaitu Cicadellidae, predator (11 famili) dengan INP tertinggi yaitu Formicidae, parasitoid (16 famili) dengan INP tertinggi yaitu Braconidae, dan polinator (3 famili) dengan INP tertinggi yaitu Syrphidae. Serangga lainnya memiliki peranan sebagai dekomposer, netral, hama ternak, serangga air, vektor entomopatogen, dan vektor penyakit. Keanekaragaman jenis serangga terkategori sedang dan menyebar secara merata.
Evaluation of nitrate in shallow groundwater at Pasirkoja of Bandung City, Indonesia, using the pollution index and the nitrate pollution index methods Naily, Wilda; Sunardi, Sunardi; Asdak, Chay; Hendarmawan, Hendarmawan
Journal of Degraded and Mining Lands Management Vol. 11 No. 4 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.1114.6251

Abstract

Pasirkoja is an old residential area in Bandung City currently densely populated. Some people in Pasirkoja use shallow groundwater for washing and bathing, and some for cooking. Pollutants very easily pollute shallow groundwater, and nitrate is one of the pollutants found in shallow groundwater in residential areas. The water quality status was determined using the pollution index (PI) method based on a Decree of the Minister of Environment Number 115 of 2003 and the nitrate pollution index (NPI) to ascertain the shallow groundwater quality in Pasirkoja of Bandung City, Indonesia. The variables used in the PI method were pH, turbidity, total dissolved solids (TDS), nitrate, and nitrite, while the NPI method used the nitrate parameter. Shallow groundwater samples were taken during the rainy season and dry season. Based on the PI method, the results showed that the quality status of shallow groundwater at the research location is mostly lightly polluted in the rainy and dry seasons. Meanwhile, based on the NPI method, most are clean (not polluted). Differences in the quality status of shallow groundwater depend on the environmental conditions around which shallow groundwater samples were taken. The research results also showed that, based on the PI method, nitrate is not the main parameter that determines pollution at the research location.
A NATIONAL POLICY ON INDONESIA’S INTEGRATED WATER RESOURCE CONSERVATION MANAGEMENT Chay Asdak; Yulizar; Subiyanto
Indonesian Journal of Forestry Research Vol. 10 No. 2 (2023): Indonesian Journal of Forestry Research
Publisher : APTKLHI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59465/ijfr.2023.10.2.151-162

Abstract

Changes in global precipitation would affect Indonesia to improve its water resource management system. As most watersheds are in a critical stage nowadays, it is urgent to develop a new plan and policy on water conservation that integrates the most important parameters reasonably. It has the purpose of ensuring that water resources are available for all activities and purposes within the area, especially for future periods. Integrated Water Resources Conservation Management is one of the promising approaches that is being mainly developed, particularly through the participation of all stakeholders. This participation brings equal responsibility to protect and sustainably manage the water resources, which might differ from one area to another in Indonesia. This study shows that it is important to bring up local wisdom practices on water conservation management. These could help overcome the problems related to water management in different locations in Indonesia and encourage all the stakeholders to take responsibility. All the inputs from the stakeholders are very helpful to identify the strategy at the national level, and thus it would minimize the misinterpretation between local and national levels in terms of regulation or policy. Furthermore, the approach strategies provided in this paper could improve the water national policy in Indonesia and minimize the negative potential impacts due to the lack of precipitation in the upcoming years.
Inovasi Ekonomis Pengolahan Bio-Briket Berbahan Limbah Ampas Kopi untuk Meningkatkan Pendapatan Petani di Pedesaan Garut Ihsan, Daffa Aufa; Prawiranegara, Boy Macklin Pareira; Asdak, Chay; Sugandi, Wahyu Kristian
Prosiding Semnastek PROSIDING SEMNASTEK 2024
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penelitian ini bertujuan untuk menganalisis potensi pengembangan bio-briket dari limbah ampas kopi sebagai solusi ekonomi di daerah pedesaan Garut, khususnya di Sub DAS Cikamiri, Desa Tanjungkarya. Metode deskriptif digunakan dalam penelitian ini, yang berlangsung dari Juli 2023 hingga Februari 2024, dengan pengumpulan data melalui survei pengamatan langsung di lokasi penelitian. Hasil penelitian menunjukkan bahwa proses pembuatan briket melalui 17 tahapan operasi memungkinkan pemanfaatan limbah ampas kopi dan serbuk gergaji kayu menjadi produk bernilai tinggi. Selain itu, analisis biaya produksi menunjukkan harga pokok produksi pertahun sebesar Rp19.489.996, dengan kapasitas produksi mencapai 2880 kg per tahun. Berdasarkan perhitungan harga pokok produksi dan pendapatan bersih, usaha bio-briket berbahan limbah ampas kopi ini menunjukkan keuntungan yang layak dengan nilai Benefit Cost Ratio (BCR) sebesar 1,77. Kesimpulannya, pengembangan bio-briket dari limbah ampas kopi memiliki potensi yang besar dalam mengurangi limbah, meningkatkan pendapatan petani, dan mendukung ketahanan energi di daerah pedesaan Garut.Kata kunci: Bio-briket, Limbah ampas kopi, Potensi ekonomi, Daerah pedesaan, Garut.
Co-Authors Amiruddin A.Dajaan Imami Andiles Kusnadi Sentosa Asep Yusuf Asri Widyasanti Ayu, Yogina Lestari B Budiono Benny Joy Boy Macklin Pareira Prawiranegara Devi Maulida Rahmah Dinda Febrima Napitupulu Dwi Rustam Kendarto Edy Suryadi Efan Yudha Winata Fifi Dwi Pratiwi Fuadah, Eza Zahrotul Gunawan, Budhi Hendarmawan Hendarmawan, Hendarmawan Hilman Syaeful Alam Ida Nurlinda Iga Maliga Ihsan, Daffa Aufa Irfan Ardiansah Iwan Setiawan Leon J. Bran Mimin Muhaemin, Mimin Moh. Dede N.P, Sophia Dwiratna Nadia Astriani Nanda, Muhammad Achirul Nugroho, Chrismaria Putri Nurpilihan Bafdal Nurrachman, Mochamad Anfasa Octoyne, Aisyah Pari kesit Parikesit Parikesit Pithaloka, Nabila Aura Raden Bramadi Nugraha Wargadibrata Ramdhon Bermanakusumah Santika, Silvy Saraswati, Gredia Sekar Selly Harnesa Putri Setiawan, Ditriz Silvy Santika SIska Rasiska, SIska Sophia Dwiratna, Sophia Subiyanto Subiyanto Subiyanto Sudarjat Sudarjat Sugiarto, Anto Tri Sunardi Sunardi SURYADI, DEDE Wagiono - Wahyu Kristian Sugandi Widiyatno Widiyatno Wilda Naily Yohanes Christian Yulizar Yulizar Yulizar