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ANALISIS ASPEK BIOFISIK DALAM PENILAIAN KERAWANAN BANJIR DI SUB DAS SAMIN PROVINSI JAWA TENGAH Wiwin Budiarti; Evi Gravitiani; Mujiyo Mujiyo
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 8 No. 1 (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.8.1.96-108

Abstract

Floods a main problem in Samin sub watershed, which is part of the Bengawan Solo watershed, Central Java Province. Assessment of the flood vulnerability level and its determinant causes is required as a basis information for policy makers to design a flood mitigation strategy. This study aims to assess the level of flood vulnerability and to analyze the biophysical aspects that caused flooding in Samin sub watershed. The method used is survey and the quantitative analysis of biophysical aspects including slope, soil, drainage density, land use and rainfall using map-overlay and scoring approach. Data analysis using Geographic Information System (GIS) technology. The results showed that the Samin sub-watershed areas has five levels of flood vulnerability is the category of "not vulnerable" area of 2188.44 ha (3.45%), "rather vulnerable" area of 3194.17 ha (5.03%), "quite vulnerable" area of 5379.17 ha (8.47%), "vulnerable" area of 31006.51 ha (48.83%) and "very vulnerable" area of 21726.56 ha (34.22%). The level is vulnerable - very vulnerable mostly spread in the middle and downstream Samin sub-basins including the District Polokarto, Sukoharjo, Mojolaban, Bendosari, Jumantono, Karanganyar, Kebakkramat, Jaten. While the level is rather vulnerable - not prone areas spread in the upstream sub-basins that is District Tawangmangu, Jatiyoso, Ngargoyoso. Correlation analysis results show that the most dominant biophysical aspects that caused flooding in Samin sub watershed is the slope, drainage density and land use.
Analysis of Soil Erosion Hazardous Level In Jatipurno Sub-District Of Wonogiri District Apriani Widiatiningsih; Mujiyo Mujiyo; Suntoro Suntoro
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.8.3.383-395

Abstract

The aim of this research was to analyze erosion hazardous level (TBE) and predict the actual erosion (A) at Jatipurno Sub-District and planning of soil conservation when the actual erosion is more than the threshold at Jatipurno District. The USLE (Universal Soil Loss Equation) was used to predict actual erosion and erosion hazardous level then planning of soil conservation. The result showed that actual erosion level was varied from very light to heavy. The very light erosion, in range 0,2 ton/ha/yr to 7,8 ton/ha/yr the areas is about 1.879,19 ha (43,5%). The light erosion is 51,96 ton/ha/yr the areas is about 788,40 ha (18,3%). The moderate erosion is 92,83 ton/ha/yr the areas is about 694.95 ha (16,1%). The heavy erosion in range 209,84 ton/ha/yr to 377,21 ton/ha/yr the areas is about 952,80 ha (22,1%). Erosion hazardous level was varied from very light to very heavy. The very light erosion hazardous level covered areas of 1.034,77 ha (23,98%), the light erosion hazardous level covered areas 1.443 ha (33,44%), the heavy erosion hazardous level covered areas 1.204 ha (27,91%), the very heavy erosion hazardous level covered areas 632,88 ha (14,67%). Actual erosion dominated by very light level and TBE by the light level. Soil conservation planning is carried out by vegetative and mechanical conservation measures, such as planting variations of cover crops and terraces built in accordance with slope land and soil depths, land management according to local environmental and cultural preservation regulations and cooperation of all parties in environmental management can be done to prevent and minimize erosion.
Landslides Hazard Assessment Using Soil Physics Approaches as a Determinant Factor on Agricultural Land in Hilly Area Mujiyo, Mujiyo; Tiara Meti Pratingkas; Ongko Cahyono; Dwi Priyo Ariyanto
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 14 No 3 (2024): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.14.3.566

Abstract

Landslides are natural disasters that most often occur in hilly areas, one of which is in the Manyaran District, and are caused by land use, slope, and rainfall. This study aimed to assess the level of landslides on several slopes and determine the soil characteristics that most determine the level of landslide vulnerability to formulate an appropriate strategy for hilly land management. The sampling points used land map units (LMU) overlaid on thematic maps (land use, soil type, and slope), and were divided into 22 LMUs with three repeats for each LMU. The landslide level was calculated using a cumulative weight score. It was grouped based on the interval formula and modifications to the addition of permeability and soil texture parameters, while the determinants were analyzed using ANOVA and Pearson’s correlation. The results showed that the area was not very low (133.2 ha), low (1,015.33 ha), moderate (1,205.46 ha), high (3,248.48 ha), or very high(734.1 ha). The highest landslide hazard was on steep land (25–45%), and the determining factors were permeability and texture. The steeper the slope and the higher the permeability and soil texture values, the higher the landslide. The recommended landslide mitigation strategies are terracing and minimum tillage on agricultural land. Research on the level of landslides and information on determinant soil characteristics helps stakeholders formulate policies and manage agricultural land on hilly agricultural land.
Co-Authors Adinda Rusdiani Putri Aditya Bagas Calosa Afifah Afiana Susila Ahmad Norri Prasetyo Aisyiyah Amini Akas Anggita AKTAVIA HERAWATI Ali Pramono Anggita, Akas Apriani Widiatiningsih Apriani Widiatiningsih Arif Anshori Arif Anshori, Arif Asri Wulandari Aulia Arifa Ayunda Fitri Ulya Maslina Bagas Yulianto Balina Dita Eisya Prashanti Nugroho Bambang Hendro Sunarminto Bambang Hendro Sunarminto Bambang Hendro sunarminto Bambang Hendro Sunarminto Bambang Hendro Sunarminto Budi Kristiawan Budiarti, Wiwin Budiono, R Dany Farel Ega Arsanto Daradinda Surya Irawaningsih Desti Dian Amalina Devi Novitasari Putri Wibowo Dhika Sri Anggrahini Dika Dwi Darmawan Dwi Meisari Dwi Priyo Ariyanto Dwiwiyati Nurul Septariani Eko Hanudin Eko Hanudin Eko Haryono Endika Sofya Pramesti Erina Prasdila Ashari Erlyna Wida Riptanti Essla, Verona Putri Evi Gravitiani Evi Gravitiani Evi Gravitiani, Evi Faris Achmad Baharudin Fatchur Rochman Febryana, Nesia Ferina Pungky Ferry Rachmanto Fitriana Romdhati Fitriana, Ummi Nur Gaizka Mahdafikia Ganjar Herdiansyah Ganjar Herdiansyah Ganjar Herdiansyah Ganjar Herdiansyah, Ganjar Geun Mo Yang Geun Mo Yang Geun Mo Yang Hafizh Marianto Hanifah Salsabilla Hardian Ningsih, Hardian Hardian, Tiara Hargiani, Fransisca Xaveria Hasanah, Khalyfah Hasna Nur Faramida Heru Irianto Hery Widijanto Hery Widiyanto Himawan Adi Nugroho Holyness Nurdin Singadimedja Indri Hapsari Pusponegoro Irawaningsih, Daradinda Surya Irmawati, Viviana Istiqomah, Nanda Mei Jaka Suyana Jaka Widada JAKA WIDADA Jauhari Syamsiah Jauhari Syamsiyah Jauhari Syamsiyah Jauhari Syamsiyah Jauhari Syamsiyah Jauhari Syamsiyah Jauhari Syamsiyah Jauhari Syamsiyah Joko Winarno Joko Winarno Joon Soo Choi Khalyfah Hasanah Khoerunnisa Amaliah Syamsuddin Komariah Komariah Komariah Lestari, Audi Soekma Leviana Eka Vivia Lidya Zaela Wijaya Mapan Rochmadtulloh Mapan Rochmadtulloh Maroah, Siti Maro’ah, Siti Mentari Nurul Lathifah Muhammad Rizky Romadhon Nanda Mei Istiqomah Noorhadi Noorhadi Novi Rahmawati Sutopo novi rahmawati sutopo Novi Rahmawati Sutopo Nugroho, Diki Nur Aida Suheri Nurul Farahin Ongko Cahyono ongko cahyono P Purwanto Pangastuti, Triyana Suryaning Priono, Timur Putri Oktafia Niawati Putri, Elvia Febriani Qonita Luthfiyah Qonita, Rade Rara Aulia R Budiono R Budiono R Rahayu Rachma Ulfa Arini Raditia Eka Kurniawan Rafirman, Rizkisadi Rahayu Rahayu Rahayu Rahayu Rahayu Rahayu Rahayu Rahayu Rahayu Rahayu Rahayu Rahayu Rahayu Randy Ramadhan Ranita Restu Nur Azizah Retno Rosariastuti Retno Rosariastuti Retno Wisnu Murti Rifa Rizhandion Akbar Rizkisadi Rafirman Robby Eko Christanto Romadhon, Muhammad Rizky S Minardi S Sumarno S Suntoro S Supriyadi S Sutarno Sari Mukti Rohmawati Slamet Minardi Slamet Minardi Sri Hartati Sudadi Sudadi Sudadi Sudadi Sudjono Utomo Sumani . Sumani Sumani Sumani Sumani Sumarno Sumarno suminah . Suntoro Suntoro Suntoro Suntoro Suntoro Suntoro Suntoro Suntoro Suntoro Suntoro Suntoro Suntoro Supriyadi Supriyadi Supriyono Supriyono Surachman, Rinta Faradila Suryono Suryono Suryono Suryono Sutarno Sutarno Sutarno Sutarno Sutarno Sutarno Sutarno Sutarno Sutarno Sutarno Sutarno Sutarno Sutarno Sutopo, Novi Rahmawati Suwarto Suwarto Suwarto Suwarto Tiara Dyah Puspitasari Tiara Hardian Tiara Meti Pratingkas Timur Priono Trijono Djoko Sulistyo Ustiatik, Reni Vita Ratri Cahyani Viviana Irmawati WIDHI LARASATI Widhiyastuti, Alfia Nisa Widyatmani Sih Dewi Widyatmani Sih Dewi Wiwin Budiarti Wiwin Budiarti Yogi Sukma Mahendra Yosua Yoga Setyawan