Abyan Hilmy, - (2023) PEMANFAATAN SISTEM INFORMASI GEOGRAFIS UNTUK ANALISIS TINGKAT BAHAYA EROSI MENGGUNAKAN METODE USLE DI DAERAH ALIRAN SUNGAI KAKA KABUPATEN SERAM BAGIAN BARAT. S1 thesis, Universitas Pendidikan Indonesia.
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Abstract
Fenomena erosi merupakan fenomena alami maupun tidak alami. Oleh sebab itu sebagai salah satu syarat pengelolaan Daerah Aliran Sungai (DAS) yang baik harus dapat dikelola dengan baik. Dengan Sistem Informasi Geografis (SIG) dapat mengidentifikasi, menilai dan mengevaluasi tingkat permasalahan biofisik suatu DAS salah satunya erosi. Daerah Aliran Sungai (DAS) merupakan satu kesatuan ekosistem yang unsur-unsur utamanya terdiri atas sumberdaya alam tanah, air dan vegetasi serta sumberdaya manusia sebagai pemanfaat sumberdaya alam tersebut, kondisi Daerah Aliran Sungai (DAS) Kaka yang luasnya 77.335,02 ha memiliki potensi terkena bencana alam di kawasan DAS yaitu erosi. Tujuan dari penelitian ini adalah menganalisis Tingkat Bahaya Erosi (TBE) Daerah Aliran Sungai Kaka yang dipengaruhi oleh beberapa nilai parameter erosi menggunakan metode Universal Soil Loss Equation (USLE) serta Sistem Informasi Geografis. Dengan menggunakan data input curah hujan tahun 2013-2022, jenis tanah, panjang dan kemiringan lereng serta penggunaan lahan. Hasil penelitian setelah di overlay dengan hasil Erosi yang Diperbolehkan (Edp) serta perhitungan Sediment Delivery Ratio (SDR) terdapat 5 tingkatan Bahaya Erosi (TBE) yaitu Sangat Ringan, Ringan, Sedang, Berat dan Sangat Berat. Tingkat Bahaya Erosi (TBE) di DAS Kaka di Dominasi tingkat sangat ringan dengan nilai laju erosi <15 ton/ha/tahun yang unit penggunaan lahannya yaitu hutan lahan kering sekunder seluas 62440,30 ha. Sedangkan untuk tingkat bahaya erosi sangat berat didominasi oleh unit penggunaan lahan pertanian lahan kering campur dengan laju erosi >480 ton/ha/tahun seluas 682,59 ha Kata Kunci: Sistem Informasi Geografi, DAS, Erosi, Universal Soil Loss Equation, Tingkat Bahaya Erosi The phenomenon of erosion is a natural or unnatural phenomenon. Therefore, as one of the conditions for good management of watersheds (DAS), it must be managed properly. The Geographic Information System (GIS) can identify, assess and evaluate the level of biophysical problems in a watershed, one of which is erosion. The watershed (DAS) is an ecosystem unit whose main elements consist of natural resources such as soil, water and vegetation as well as human resources as users of these natural resources. The condition of the Kaka watershed (DAS) which covers an area of 77,335.02 ha has affected by natural disasters in the watershed area, namely erosion. The purpose of this study was to analyze the Erosion Hazard Level (TBE) of the Kaka River Basin which is affected by several erosion parameter values using the Universal Soil Loss Equation (USLE) method and Geographic Information Systems. By using rainfall input data for 2013-2022, soil type, length and slope and land use. The results of the study after being overlaid with the results of Allowable Erosion (Edp) and the calculation of the Sediment Delivery Ratio (SDR) there are 5 levels of Erosion Hazard (TBE), namely Very Light, Light, Moderate, Heavy and Very Heavy. The Erosion Hazard Level (TBE) in the Kaka Watershed is dominated by a very light level with an erosion rate of <15 tons/ha/year, with the land use unit being secondary dryland forest covering an area of 62440.30 ha. Meanwhile, the level of very severe erosion is dominated by mixed dry land agricultural land use units with an erosion rate of >480 tons/ha/year covering an area of 682.59 ha. Keywords: Geographic Information System, Watershed, Erosion, Universal Soil Loss Equation, Erosion Hazard Level
| Item Type: | Thesis (S1) |
|---|---|
| Additional Information: | Link Google Scholar : https://scholar.google.com/citations?user=qkAcZS8AAAAJ&hl=id&authuser=1 ID SINTA Dosen Pembimbing: Dede Rohmat : 6006073 Hendro Murtianto : 6115607 |
| Uncontrolled Keywords: | Sistem Informasi Geografi, DAS, Erosi, Universal Soil Loss Equation, Tingkat Bahaya Erosi |
| Subjects: | G Geography. Anthropology. Recreation > G Geography (General) G Geography. Anthropology. Recreation > GA Mathematical geography. Cartography |
| Divisions: | Fakultas Pendidikan Ilmu Pengetahuan Sosial > Sains Informasi Geografi |
| Depositing User: | Abyan Hilmy |
| Date Deposited: | 07 Sep 2023 00:31 |
| Last Modified: | 07 Sep 2023 00:31 |
| URI: | http://repository.upi.edu/id/eprint/99446 |
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