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Rhoshandhayani Koesiyanto Taslim
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Environmental Science

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Prediksi Erosi di Wilayah Jawa Timur Rhoshandhayani Koesiyanto Taslim; Marga Mandala; Indarto Indarto
Jurnal Ilmu Lingkungan Vol 17, No 2 (2019): Agustus 2019
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (737.533 KB) | DOI: 10.14710/jil.17.2.323-332

Abstract

Erosion is an event of eroding soil that occurs naturally.  However, human activities that change land use from natural (forestry, plantation, rural areas) to urban features can alter the erosion processes.  Rapid calculation of erosion level for the wide area is necessary for the management and conservation planning.  This research aims to analyze the erosion level in East Java area using USLE (Universal Soil Loss Equation) and GIS. The erosivity factor (R) is calculated from rainfall data. Vegetation factor (C) and the conservation factor (P) estimated from land use map.  The length and slope factor (LS) are calculated from the ASTER GDEM2, and the erodibility factor (K) is obtained from interpretation of soil map. Furthermore, all factors were analysed to calculate erosion rate. The result shows that the average erosion rate in East Java regions is 10,30 tons/ha/year.  The result also show that 78,71% area of East Java is classified as very low erosion rate (0-15 tons/ha/year); 10,75% classified as low erosion rate (15-60 tons/ha/year); 6,39% classified as  moderate erosion rate (60-180 tons/ha/year); and 2,83% is severe type (180-480 tons/ha/year). Only 1,31% from the total area is classified as very severe erosion rate (>480 tons/ha/year). The result also shows that USLE can be used to facilitate rapid erosion prediction for wide area.
PENGEMBANGAN BUKU TEKS PELAJARAN IPA TERINTEGRASI MITIGASI BENCANA PADA POKOK BAHASAN GETARAN DAN GELOMBANG Sri Wahyuni; Rhoshandhayani Koesiyanto Taslim; Rayendra Wahyu Bachtiar
FKIP e-PROCEEDING Vol 2 No 1 (2017): Prosiding Seminar Nasional Pendidikan Fisika
Publisher : Pendidikan Fisika FKIP UNEJ

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

Abstract

Penelitian ini bertujuan untuk mendeskripsikan validasi, respon siswa dan kesiapsiagaan terhadap bencana gempa bumi dan tsunami setelah siswa menggunakan buku teks pelajaran IPA terintegrasi mitigasi bencana. Penelitian ini termasuk penelitian pengembangan yang menghasilkan buku teks pelajaran IPA terintegrasi mitigasi bencana pada pokok bahasan getaran dan gelombang. Model pengembangan yang digunakan adalah model pengembangan Hannafin dan Peck, yang terdiri dari analisis kebutuhan, desain, pengembangan dan implementasi yang dikaitkan dengan evaluasi dan revisi pada setiap tahapannya. Hasil dari penelitian ini menunjukkan bahwa penilaian validator terhadap buku teks pelajaran IPA adalah 4.04 pada rentang 1-5 yang dinyatakan valid. Respon siswa terhadap buku teks pelajaran IPA ini adalah positif dengan nilai persentase 96,1%. Kesiapsiagaan siswa terhadap bencana memiliki indeks 93 yang menunjukkan bahwa siswa telah sangat siap menghadapi bencana.
Co-Authors Indarto Indarto Mandala, Marga Rayendra Wahyu Bachtiar Sri Wahyuni